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Civil engineering
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Q77590
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Civil engineering is a professional engineering discipline that deals with the design, construction, and maintenance of the physical and naturally built environment, including public works such as roads, bridges, canals, dams, airports, sewage systems, pipelines, structural components of buildings, and railways.
Civil engineering is traditionally broken into a number of sub-disciplines. It is considered the second-oldest engineering discipline after military engineering, and it is defined to distinguish non-military engineering from military engineering. Civil engineering can take place in the public sector from municipal public works departments through to federal government agencies, and in the private sector from locally based firms to Fortune Global 500 companies.
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Cave
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Q35509
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Caves or caverns are natural voids under the Earth's surface. Caves often form by the weathering of rock and often extend deep underground. Exogene caves are smaller openings that extend a relatively short distance underground (such as rock shelters). Caves which extend further underground than the opening is wide are called endogene caves.
Speleology is the science of exploration and study of all aspects of caves and the cave environment. Visiting or exploring caves for recreation may be called caving, potholing, or spelunking.
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California Institute of Technology
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Q161562
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The California Institute of Technology (branded as Caltech) is a private research university in Pasadena, California, United States. The university is responsible for many modern scientific advancements and is among a small group of institutes of technology in the United States that are devoted to the instruction of pure and applied sciences.
The institution was founded as a preparatory and vocational school by Amos G. Throop in 1891 and began attracting influential scientists such as George Ellery Hale, Arthur Amos Noyes, and Robert Andrews Millikan in the early 20th century. The vocational and preparatory schools were disbanded and spun off in 1910, and the college assumed its present name in 1920. In 1934, Caltech was elected to the Association of American Universities, and the antecedents of NASA's Jet Propulsion Laboratory, which Caltech continues to manage and operate, were established between 1936 and 1943 under Theodore von Kármán.
Caltech has six academic divisions with strong emphasis on science and engineering, managing $332 million in research grants as of 2010. Its 124-acre (50 ha) primary campus is located approximately 11 mi (18 km) northeast of downtown Los Angeles, in Pasadena. First-year students are required to live on campus, and 95% of undergraduates remain in the on-campus housing system at Caltech. Students agree to abide by an honor code which allows faculty to assign take-home examinations. The Caltech Beavers compete in 13 intercollegiate sports in the NCAA Division III's Southern California Intercollegiate Athletic Conference (SCIAC).
Scientists and engineers at or from the university have played an essential role in many modern scientific breakthroughs and innovations, including advances in space research, sustainability science, quantum physics, and seismology. As of October 2024, there are 80 Nobel laureates who have been affiliated with Caltech, making it the institution with the highest number of Nobelists per capita in America. This includes 47 alumni and faculty members (48 prizes, with chemist Linus Pauling being the only individual in history to win two unshared prizes). In addition, 68 National Medal of Science Recipients, 43 MacArthur Fellows, 15 National Medal of Technology and Innovation recipients, 11 astronauts, 5 Science Advisors to the President, 4 Fields Medalists, and 6 Turing Award winners have been affiliated with Caltech.
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Celebrity
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Q211236
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Celebrity is a condition of fame and broad public recognition of a person or group due to the attention given to them by mass media. The word is also used to refer to famous individuals. A person may attain celebrity status by having great wealth, participation in sports or the entertainment industry, their position as a political figure, or even their connection to another celebrity. 'Celebrity' usually implies a favorable public image, as opposed to the neutrals 'famous' or 'notable', or the negatives 'infamous' and 'notorious'.
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County Mayo
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Q178626
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County Mayo (; from Irish Maigh Eo, Contae Mhaigh Eo, meaning 'Plain of the yew trees') is a county in Ireland. In the West of Ireland, in the province of Connacht, it is named after the village of Mayo, now generally known as Mayo Abbey. Mayo County Council is the local authority. The population was 137,231 at the 2022 census. The boundaries of the county, which was formed in 1585, reflect the Mac William Íochtar lordship at that time.
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County Fermanagh
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Q190678
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County Fermanagh ( fər-MAN-ə; from Irish Fir Manach / Fear Manach, meaning 'men of Manach') is one of the thirty-two counties of Ireland, one of the nine counties of Ulster and one of six counties of Northern Ireland.
The county covers an area of 1,691 km2 (653 sq mi) and had a population of 63,585 as of 2021. Enniskillen is the county town and largest in both size and population.
Fermanagh is one of four counties of Northern Ireland to have a majority of its population from a Catholic background, according to the 2011 census.
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Council of Europe
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Q8908
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The Council of Europe (CoE; French: Conseil de l'Europe, CdE) is a regional organisation with the goal of upholding human rights, democracy and the rule of law in Europe. Founded in 1949, it is Europe's oldest intergovernmental organisation, representing 46 member states from Europe, with a population of approximately 675 million as of 2023; it operates with an annual ordinary budget of approximately 500 million euros.
The organisation is distinct from the European Union (EU), although people sometimes confuse the two organisations – partly because the EU has adopted the original European flag, designed for the Council of Europe in 1955, as well as the European anthem. No country has ever joined the EU without first belonging to the Council of Europe. The Council of Europe is an official United Nations observer.
Unlike the EU, the Council of Europe cannot make binding laws; however, the council has produced a number of international treaties, including the Convention for the Protection of Human Rights and Fundamental Freedoms (European Convention on Human Rights, ECHR) of 1953. Provisions from the convention are incorporated in domestic law in many participating countries. The best-known body of the Council of Europe is the European Court of Human Rights, which rules on alleged violations of the ECHR.
The council's two statutory bodies are the Committee of Ministers, which comprises the foreign ministers of each member state, and the Parliamentary Assembly of the Council of Europe (PACE), which is composed of members of the national parliaments of each member state. The Commissioner for Human Rights is an institution within the Council of Europe, mandated to promote awareness of and respect for human rights within the member states. The secretary general presides over the secretariat of the organisation. Other major CoE bodies include the European Directorate for the Quality of Medicines & HealthCare (EDQM) and the European Audiovisual Observatory.
The headquarters of the Council of Europe, as well as its Court of Human Rights, are situated in Strasbourg, France. The Council uses English and French as its two official languages. The Committee of Ministers, the PACE, and the Congress of the Council of Europe also use German and Italian for some of their work.
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Charles Dickens
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Q5686
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Charles John Huffam Dickens ( ; 7 February 1812 – 9 June 1870) was an English novelist, journalist, short story writer and social critic. He created some of literature's best-known fictional characters, and is regarded by many as the greatest novelist of the Victorian era. His works enjoyed unprecedented popularity during his lifetime and, by the 20th century, critics and scholars had recognised him as a literary genius. His novels and short stories are widely read today.
Born in Portsmouth, Dickens left school at age 12 to work in a boot-blacking factory when his father John was incarcerated in a debtors' prison. After three years, he returned to school before beginning his literary career as a journalist. Dickens edited a weekly journal for 20 years; wrote 15 novels, five novellas, hundreds of short stories and nonfiction articles; lectured and performed readings extensively; was a tireless letter writer; and campaigned vigorously for children's rights, education and other social reforms.
Dickens's literary success began with the 1836 serial publication of The Pickwick Papers, a publishing phenomenon—thanks largely to the introduction of the character Sam Weller in the fourth episode—that sparked Pickwick merchandise and spin-offs. Within a few years, Dickens had become an international literary celebrity, famous for his humour, satire and keen observation of character and society. His novels, most of them published in monthly or weekly instalments, pioneered the serial publication of narrative fiction, which became the dominant Victorian mode for novel publication. Cliffhanger endings in his serial publications kept readers in suspense. The instalment format allowed Dickens to evaluate his audience's reaction, and he often modified his plot and character development based on such feedback. For example, when his wife's chiropodist expressed distress at the way Miss Mowcher in David Copperfield seemed to reflect her own disabilities, Dickens improved the character with positive features. His plots were carefully constructed and he often wove elements from topical events into his narratives. Masses of the illiterate poor would individually pay a halfpenny to have each new monthly episode read to them, opening up and inspiring a new class of readers.
His 1843 novella A Christmas Carol remains especially popular and continues to inspire adaptations in every creative medium. Oliver Twist and Great Expectations are also frequently adapted and, like many of his novels, evoke images of early Victorian London. His 1853 novel Bleak House, a satire on the judicial system, helped support a reformist movement that culminated in the 1870s legal reform in England. A Tale of Two Cities (set in London and Paris) is regarded as his best-known work of historical fiction. The most famous celebrity of his era, he undertook, in response to public demand, a series of public reading tours in the later part of his career. The term Dickensian is used to describe something that is reminiscent of Dickens and his writings, such as poor social or working conditions, or comically repulsive characters.
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Capital punishment
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Q8454
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Capital punishment, also known as the death penalty and formerly called judicial homicide, is the state-sanctioned killing of a person as punishment for actual or supposed misconduct. The sentence ordering that an offender be punished in such a manner is known as a death sentence, and the act of carrying out the sentence is known as an execution. A prisoner who has been sentenced to death and awaits execution is condemned and is commonly referred to as being "on death row". Etymologically, the term capital (lit. 'of the head', derived via the Latin capitalis from caput, "head") refers to execution by beheading, but executions are carried out by many methods, including hanging, shooting, lethal injection, stoning, electrocution, and gassing.
Crimes that are punishable by death are known as capital crimes, capital offences, or capital felonies, and vary depending on the jurisdiction, but commonly include serious crimes against a person, such as murder, assassination, mass murder, child murder, aggravated rape, terrorism, aircraft hijacking, war crimes, crimes against humanity, and genocide, along with crimes against the state such as attempting to overthrow government, treason, espionage, sedition, and piracy. Also, in some cases, acts of recidivism, aggravated robbery, and kidnapping, in addition to drug trafficking, drug dealing, and drug possession, are capital crimes or enhancements. However, states have also imposed punitive executions, for an expansive range of conduct, for political or religious beliefs and practices, for a status beyond one's control, or without employing any significant due process procedures. Judicial murder is the intentional and premeditated killing of an innocent person by means of capital punishment. For example, the executions following the show trials in the Soviet Union during the Great Purge of 1936–1938 were an instrument of political repression.
As of 2021, 56 countries retain capital punishment, 111 countries have taken a position to abolished it de jure for all crimes, 7 have abolished it for ordinary crimes (while maintaining it for special circumstances such as war crimes), and 24 are abolitionist in practice. Although the majority of countries have abolished capital punishment, over half of the world's population live in countries where the death penalty is retained, including India, China, the U.S., Indonesia, Pakistan, Bangladesh, Japan, Vietnam, Egypt, Nigeria, Ethiopia and DR Congo. As of 2023, only 2 out of 38 OECD member countries (the United States and Japan) allow capital punishment.
Capital punishment is controversial, with many people, organisations, religious groups, and states holding differing views on whether it is ethically permissible. Amnesty International declares that the death penalty breaches human rights, specifically "the right to life and the right to live free from torture or cruel, inhuman or degrading treatment or punishment." These rights are protected under the Universal Declaration of Human Rights, adopted by the United Nations in 1948. In the European Union (EU), Article 2 of the Charter of Fundamental Rights of the European Union prohibits the use of capital punishment. The Council of Europe, which has 46 member states, has worked to end the death penalty and no execution has taken place in its current member states since 1997. The United Nations General Assembly has adopted, throughout the years from 2007 to 2020, eight non-binding resolutions calling for a global moratorium on executions, with support for eventual abolition.
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Carbon dioxide
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Q1997
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Carbon dioxide is a chemical compound with the chemical formula CO2. It is made up of molecules that each have one carbon atom covalently double bonded to two oxygen atoms. It is found in a gas state at room temperature and at normally-encountered concentrations it is odorless. As the source of carbon in the carbon cycle, atmospheric CO2 is the primary carbon source for life on Earth. In the air, carbon dioxide is transparent to visible light but absorbs infrared radiation, acting as a greenhouse gas. Carbon dioxide is soluble in water and is found in groundwater, lakes, ice caps, and seawater.
It is a trace gas in Earth's atmosphere at 421 parts per million (ppm), or about 0.042% (as of May 2022) having risen from pre-industrial levels of 280 ppm or about 0.028%. Burning fossil fuels is the main cause of these increased CO2 concentrations, which are the primary cause of climate change.
Its concentration in Earth's pre-industrial atmosphere since late in the Precambrian was regulated by organisms and geological features. Plants, algae and cyanobacteria use energy from sunlight to synthesize carbohydrates from carbon dioxide and water in a process called photosynthesis, which produces oxygen as a waste product. In turn, oxygen is consumed and CO2 is released as waste by all aerobic organisms when they metabolize organic compounds to produce energy by respiration. CO2 is released from organic materials when they decay or combust, such as in forest fires. When carbon dioxide dissolves in water, it forms carbonate and mainly bicarbonate (HCO−3), which causes ocean acidification as atmospheric CO2 levels increase.
Carbon dioxide is 53% more dense than dry air, but is long lived and thoroughly mixes in the atmosphere. About half of excess CO2 emissions to the atmosphere are absorbed by land and ocean carbon sinks. These sinks can become saturated and are volatile, as decay and wildfires result in the CO2 being released back into the atmosphere. CO2, or the carbon it holds, is eventually sequestered (stored for the long term) in rocks and organic deposits like coal, petroleum and natural gas.
Nearly all CO2 produced by humans goes into the atmosphere. Less than 1% of CO2 produced annually is put to commercial use, mostly in the fertilizer industry and in the oil and gas industry for enhanced oil recovery. Other commercial applications include food and beverage production, metal fabrication, cooling, fire suppression and stimulating plant growth in greenhouses.: 3
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Catalysis
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Q82264
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Catalysis () is the increase in rate of a chemical reaction due to an added substance known as a catalyst (). Catalysts are not consumed by the reaction and remain unchanged after it. If the reaction is rapid and the catalyst recycles quickly, very small amounts of catalyst often suffice; mixing, surface area, and temperature are important factors in reaction rate. Catalysts generally react with one or more reactants to form intermediates that subsequently give the final reaction product, in the process of regenerating the catalyst.
The rate increase occurs because the catalyst allows the reaction to occur by an alternative mechanism which may be much faster than the noncatalyzed mechanism. However the noncatalyzed mechanism does remain possible, so that the total rate (catalyzed plus noncatalyzed) can only increase in the presence of the catalyst and never decrease.
Catalysis may be classified as either homogeneous, whose components are dispersed in the same phase (usually gaseous or liquid) as the reactant, or heterogeneous, whose components are not in the same phase. Enzymes and other biocatalysts are often considered as a third category.
Catalysis is ubiquitous in chemical industry of all kinds. Estimates are that 90% of all commercially produced chemical products involve catalysts at some stage in the process of their manufacture.
The term "catalyst" is derived from Greek καταλύειν, kataluein, meaning "loosen" or "untie". The concept of catalysis was invented by chemist Elizabeth Fulhame, based on her novel work in oxidation-reduction experiments.
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Color
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Q1075
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Color (or colour in Commonwealth English; see spelling differences) is the visual perception based on the electromagnetic spectrum. Though color is not an inherent property of matter, color perception is related to an object's light absorption, reflection, emission spectra, and interference. For most humans, colors are perceived in the visible light spectrum with three types of cone cells (trichromacy). Other animals may have a different number of cone cell types or have eyes sensitive to different wavelengths, such as bees that can distinguish ultraviolet, and thus have a different color sensitivity range. Animal perception of color originates from different light wavelength or spectral sensitivity in cone cell types, which is then processed by the brain.
Colors have perceived properties such as hue, colorfulness (saturation), and luminance. Colors can also be additively mixed (commonly used for actual light) or subtractively mixed (commonly used for materials). If the colors are mixed in the right proportions, because of metamerism, they may look the same as a single-wavelength light. For convenience, colors can be organized in a color space, which when being abstracted as a mathematical color model can assign each region of color with a corresponding set of numbers. As such, color spaces are an essential tool for color reproduction in print, photography, computer monitors, and television. Some of the most well-known color models and color spaces are RGB, CMYK, HSL/HSV, CIE Lab, and YCbCr/YUV.
Because the perception of color is an important aspect of human life, different colors have been associated with emotions, activity, and nationality. Names of color regions in different cultures can have different, sometimes overlapping areas. In visual arts, color theory is used to govern the use of colors in an aesthetically pleasing and harmonious way. The theory of color includes the color complements; color balance; and classification of primary colors, secondary colors, and tertiary colors. The study of colors in general is called color science.
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Cycling
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Q53121
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Cycling, also known as bicycling or biking, is the activity of riding a bicycle or other types of pedal-driven human-powered vehicles such as balance bikes, unicycles, tricycles, and quadricycles. Cycling is practised around the world for purposes including transport, recreation, exercise, and competitive sport.
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The Church of Jesus Christ of Latter-day Saints
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Q42504
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The Church of Jesus Christ of Latter-day Saints, informally known as the LDS Church or Mormon Church, is a nontrinitarian restorationist Christian denomination and the largest denomination in the Latter Day Saint movement. Founded during the Second Great Awakening, the church is headquartered in Salt Lake City, Utah, and has established congregations and built temples worldwide. According to the church, as of 2024, it has over 17.5 million members, of which over 6.8 million live in the U.S. The church also reports over 109,000 volunteer missionaries and 202 dedicated temples.
The church was founded by Joseph Smith in 1830, originally as the Church of Christ in western New York. Under Smith's leadership, the church's headquarters moved successively to Ohio, Missouri, and Illinois. After his death in 1844 and the resultant succession crisis, the majority of his followers sided with Brigham Young, who led the church to its current headquarters in Salt Lake City. Young and his successors continued the church's growth, first throughout the Intermountain West, and later as a national and international organization. The church has been criticized throughout its history; modern criticism includes disputes over the church's historical claims, treatment of minorities, and finances. The church's practice of polygamy was controversial until it was curtailed in 1890 and officially rescinded in 1904.
Church theology is restorationist and nontrinitarian; the church identifies as Christian and includes a belief in the doctrine of salvation through Jesus Christ and his substitutionary atonement on behalf of mankind. It is often included in the lists of larger Christian denominations, though most Catholics, Orthodox Christians and evangelicals, and some Mainline Protestants have considered the LDS Church to be distinct and separate from mainstream Christianity. The church has an open canon of four scriptural texts: the Holy Bible, the Book of Mormon, the Doctrine and Covenants (D&C), and the Pearl of Great Price. Other than the Bible, the majority of the church canon consists of material believed by the church's members to have been revealed by God to Joseph Smith, including texts described as lost parts of the Bible, and other works believed to have been written by ancient prophets, including the Book of Mormon. Members adhere to church laws of sexual purity, health, fasting, and Sabbath observance, and contribute ten percent of their income to the church in tithing. The church teaches ordinances through which adherents make covenants with God, including baptism, endowment, and celestial marriage.
Members of the church, known as Latter-day Saints or informally as Mormons, believe that the church president is a modern-day "prophet, seer, and revelator" and that Jesus Christ, under the direction of God the Father, leads the church by revealing his will and delegating his priesthood authority to its president. The president heads a hierarchical structure descending from areas to stakes and wards. At the local and regional levels, the church has a volunteer clergy, and wards are led by bishops. Male members may be ordained to the priesthood, provided they are living by the standards of the church. Women are not ordained to the priesthood but occupy leadership roles in some church organizations. The church maintains a large missionary program that proselytizes and conducts humanitarian services worldwide; both men and women may serve as missionaries. The church also funds and participates in humanitarian projects which are independent of its missionary efforts.
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Chicago White Sox
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Q335169
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The Chicago White Sox are an American professional baseball team based in Chicago. The White Sox compete in Major League Baseball (MLB) as a member club of the American League (AL) Central Division. The club plays its home games at Rate Field, which is located on Chicago's South Side. They are one of two MLB teams based in Chicago, alongside the National League (NL)'s Chicago Cubs.
The White Sox originated in the Western League, founded as the Sioux City Cornhuskers in 1894, moving to Saint Paul, Minnesota, as the St. Paul Saints, and ultimately relocating to Chicago in 1900. The Chicago White Stockings were one of the American League's eight charter franchises when the AL asserted major league status in 1901. The team, which shortened its name to the White Sox in 1904, originally played their home games at South Side Park before moving to Comiskey Park in 1910, where they played until
1990. They moved into their current home, which was originally also known as Comiskey Park like its predecessor and later carried sponsorship from U.S. Cellular, for the 1991 season.
The White Sox won their first World Series, the 1906 World Series against the Cubs, with a defense-oriented team dubbed "the Hitless Wonders", and later won the 1917 World Series against the New York Giants. Their next appearance, the 1919 World Series, was marred by the Black Sox Scandal in which eight members of the White Sox were found to have conspired with gamblers to fix games and lose the World Series to the Cincinnati Reds. In response, the new Commissioner of Baseball, Kenesaw Mountain Landis, banned the players from the league for life. The White Sox have only made two World Series appearances since the scandal. The first came in 1959, where they lost to the Los Angeles Dodgers, before they finally won their third championship in 2005 against the Houston Astros. The 88 seasons it took the White Sox to win the World Series stands as the longest MLB championship drought in the American League, and the second longest in both leagues, to the Cubs' 108 seasons.
From 1901 to 2024, the White Sox have an overall win-loss record of 9,599–9,628–103 (.499).
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Columbus, Ohio
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Q16567
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Columbus (, kə-LUM-bəs) is the capital and most populous city of the U.S. state of Ohio. With a 2020 census population of 905,748, it is the 14th-most populous city in the U.S., the second-most populous city in the Midwest (after Chicago), and the third-most populous U.S. state capital (after Phoenix, Arizona, and Austin, Texas). Columbus is the county seat of Franklin County; it also extends into Delaware and Fairfield counties. It is the core city of the Columbus metropolitan area, which encompasses ten counties in central Ohio. It had a population of 2.139 million in 2020, making it the largest metropolitan area entirely in Ohio and 32nd-largest metro area in the U.S.
Columbus originated as numerous Native American settlements on the banks of the Scioto River. Franklinton, now a city neighborhood, was the first European settlement, laid out in 1797. The city was founded in 1812 at the confluence of the Scioto and Olentangy rivers, and laid out to become the state capital. The city was named for Italian explorer Christopher Columbus. The city assumed the function of state capital in 1816 and county seat in 1824. Amid steady years of growth and industrialization, the city has experienced numerous floods and recessions. Beginning in the 1950s, Columbus began to experience significant growth; it became the largest city in Ohio in land and population by the early 1990s. Growth has continued in the 21st century, with redevelopment occurring in numerous city neighborhoods, including downtown.
The city has a diverse economy without reliance on any one sector. The metropolitan area is home to the Battelle Memorial Institute, the world's largest private research and development foundation; Chemical Abstracts Service, the world's largest clearinghouse of chemical information; and the Ohio State University, one of the largest universities in the United States. The Greater Columbus area is further home to the headquarters of six Fortune 500 companies, namely Cardinal Health, American Electric Power, Bath & Body Works, Inc., Nationwide, Bread Financial and Huntington Bancshares.
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Cleveland
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Q37320
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Cleveland is a city in the U.S. state of Ohio and the county seat of Cuyahoga County. Located along the southern shore of Lake Erie, it is situated across the Canada–United States maritime border and lies approximately 60 mi (97 km) west of Pennsylvania. Cleveland is the most populous city on Lake Erie, the second-most populous city in Ohio, and the 53rd-most populous city in the U.S. with a population of 372,624 in 2020. The city anchors the Cleveland metropolitan area, the 33rd-largest in the U.S. at 2.18 million residents, as well as the larger Cleveland–Akron–Canton combined statistical area with 3.63 million residents.
Cleveland was founded in 1796 near the mouth of the Cuyahoga River as part of the Connecticut Western Reserve in modern-day Northeast Ohio by General Moses Cleaveland, after whom the city was named. The city's location on the river and the lake shore allowed it to grow into a major commercial and industrial metropolis by the late 19th century, attracting large numbers of immigrants and migrants. It was among the top 10 largest U.S. cities by population for much of the 20th century, a period that saw the development of the city's cultural institutions. By the 1960s, Cleveland's economy began to slow down as manufacturing declined and suburbanization occurred.
Cleveland is a port city, connected to the Atlantic Ocean via the Saint Lawrence Seaway. Its economy relies on diverse sectors that include higher education, manufacturing, financial services, healthcare, and biomedicals. The city serves as the headquarters of the Federal Reserve Bank of Cleveland, as well as several major companies. The GDP for the Greater Cleveland MSA was US$138.3 billion in 2022. Combined with the Akron MSA, the eight-county Cleveland–Akron metropolitan economy was $176 billion in 2022, the largest in Ohio.
Designated as a global city by the Globalization and World Cities Research Network, Cleveland is home to several major cultural institutions, including the Cleveland Museum of Art, the Cleveland Museum of Natural History, the Cleveland Orchestra, the Cleveland Public Library, Playhouse Square, and the Rock and Roll Hall of Fame, as well as Case Western Reserve University. Known as "The Forest City" among many other nicknames, Cleveland serves as the center of the Cleveland Metroparks nature reserve system. The city's major league professional sports teams include the Cleveland Browns (football; NFL), the Cleveland Cavaliers (basketball; NBA), and the Cleveland Guardians (baseball; MLB).
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Church of England
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Q82708
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The Church of England (C of E) is the established Christian church in England and the Crown Dependencies. It is the mother church of the Anglican tradition, with foundational doctrines being contained in the Thirty-nine Articles and The Books of Homilies. The Church traces its history to the Christian hierarchy recorded as existing in the Roman province of Britain by the 3rd century and to the 6th-century Gregorian mission to Kent led by Augustine of Canterbury. Its members are called Anglicans.
In 1534, the Church of England renounced the authority of the Papacy under the direction of Henry VIII, beginning the English Reformation. The guiding theologian that shaped Anglican doctrine was the Reformer Thomas Cranmer, who developed the Church of England's liturgical text, the Book of Common Prayer. Papal authority was briefly restored under Mary I, before her successor Elizabeth I renewed the breach. The Elizabethan Settlement (implemented 1559–1563) concluded the English Reformation, charting a course for the English church to describe itself as a via media between two branches of Protestantism—Lutheranism and Calvinism—and later, a denomination that is both Reformed and Catholic.
In the earlier phase of the English Reformation there were both Catholic and Protestant martyrs. This continued into the later phases, which saw the Penal Laws punish Catholics and nonconforming Protestants. Various factions continued to challenge the leadership and doctrine of the church into the 17th century, which under Charles I veered towards a more Catholic interpretation of the Elizabethan Settlement, especially under Archbishop Laud. Following the victory of the Roundheads in the English Civil War, the Puritan faction dominated and the Book of Common Prayer and episcopacy were abolished. These would be restored under the Stuart Restoration in 1660.
Since the English Reformation, the Church of England has used the English language in the liturgy. As a broad church, the Church of England contains several doctrinal strands: the main traditions are known as Anglo-Catholic, high church, central church, and low church, the last producing a growing evangelical wing that includes Reformed Anglicanism, with a smaller number of Arminian Anglicans. Tensions between theological conservatives and liberals find expression in debates over the ordination of women and same-sex marriage. The British monarch (currently Charles III) is the supreme governor and the archbishop of Canterbury (vacant since 7 January 2025, after the resignation of Justin Welby) is the most senior cleric. The governing structure of the Church is based on dioceses, each presided over by a bishop. Within each diocese are local parishes. The General Synod of the Church of England is the legislative body for the church and comprises bishops, other clergy and laity. Its measures must be approved by the Parliament of the United Kingdom.
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Canadian Pacific Railway
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Q46974
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The Canadian Pacific Railway (French: Chemin de fer Canadien Pacifique) (reporting marks CP, CPAA, MILW, SOO), also known simply as CPR or Canadian Pacific and formerly as CP Rail (1968–1996), is a Canadian Class I railway incorporated in 1881. The railway is owned by Canadian Pacific Kansas City Limited, known until 2023 as Canadian Pacific Railway Limited, which began operations as legal owner in a corporate restructuring in 2001.
The railway is headquartered in Calgary, Alberta. In 2023, the railway owned approximately 20,100 kilometres (12,500 mi) of track in seven provinces of Canada and into the United States, stretching from Montreal to Vancouver, and as far north as Edmonton. Its rail network also served Minneapolis–St. Paul, Milwaukee, Detroit, Chicago, and Albany, New York, in the United States.
The railway was first built between eastern Canada and British Columbia between 1875 and 1885 (connecting with Ottawa Valley and Georgian Bay area lines built earlier), fulfilling a commitment extended to British Columbia when it entered Confederation in 1871; the CPR was Canada's first transcontinental railway. Primarily a freight railway, the CPR was for decades the only practical means of long-distance passenger transport in most regions of Canada and was instrumental in the colonization and development of Western Canada. The CPR became one of the largest and most powerful companies in Canada, a position it held as late as 1975. The company acquired two American lines in 2009: the Dakota, Minnesota and Eastern Railroad (DM&E) and the Iowa, Chicago and Eastern Railroad (IC&E). Also, the company owns the Indiana Harbor Belt Railroad, a Hammond, Indiana-based terminal railroad along with Conrail Shared Assets Operations. CPR purchased the Kansas City Southern Railway in December 2021 for US$31 billion. On April 14, 2023, KCS became a wholly owned subsidiary of CPR, and both CPR and its subsidiaries began doing business under the name of its parent company, CPKC.
The CPR is publicly traded on both the Toronto Stock Exchange and the New York Stock Exchange under the ticker CP. Its U.S. headquarters are in Minneapolis. As of March 30, 2023, the largest shareholder of Canadian Pacific stock exchange is TCI Fund Management Limited, a London-based hedge fund that owns 6% of the company.
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Coal
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Q24489
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Coal is a combustible black or brownish-black sedimentary rock, formed as rock strata called coal seams. Coal is mostly carbon with variable amounts of other elements, chiefly hydrogen, sulfur, oxygen, and nitrogen.
Coal is a type of fossil fuel, formed when dead plant matter decays into peat which is converted into coal by the heat and pressure of deep burial over millions of years. Vast deposits of coal originate in former wetlands called coal forests that covered much of the Earth's tropical land areas during the late Carboniferous (Pennsylvanian) and Permian times.
Coal is used primarily as a fuel. While coal has been known and used for thousands of years, its usage was limited until the Industrial Revolution. With the invention of the steam engine, coal consumption increased. In 2020, coal supplied about a quarter of the world's primary energy and over a third of its electricity. Some iron and steel-making and other industrial processes burn coal.
The extraction and burning of coal damages the environment, causing premature death and illness, and it is the largest anthropogenic source of carbon dioxide contributing to climate change. Fourteen billion tonnes of carbon dioxide were emitted by burning coal in 2020, which is 40% of total fossil fuel emissions and over 25% of total global greenhouse gas emissions. As part of worldwide energy transition, many countries have reduced or eliminated their use of coal power. The United Nations Secretary General asked governments to stop building new coal plants by 2020.
Global coal use was 8.3 billion tonnes in 2022, and is set to remain at record levels in 2023. To meet the Paris Agreement target of keeping global warming below 2 °C (3.6 °F) coal use needs to halve from 2020 to 2030, and "phasing down" coal was agreed upon in the Glasgow Climate Pact.
The largest consumer and importer of coal in 2020 was China, which accounts for almost half the world's annual coal production, followed by India with about a tenth. Indonesia and Australia export the most, followed by Russia.
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Climate
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Q7937
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Climate is the long-term weather pattern in a region, typically averaged over 30 years. More rigorously, it is the mean and variability of meteorological variables over a time spanning from months to millions of years. Some of the meteorological variables that are commonly measured are temperature, humidity, atmospheric pressure, wind, and precipitation. In a broader sense, climate is the state of the components of the climate system, including the atmosphere, hydrosphere, cryosphere, lithosphere and biosphere and the interactions between them. The climate of a location is affected by its latitude, longitude, terrain, altitude, land use and nearby water bodies and their currents.
Climates can be classified according to the average and typical variables, most commonly temperature and precipitation. The most widely used classification scheme is the Köppen climate classification. The Thornthwaite system, in use since 1948, incorporates evapotranspiration along with temperature and precipitation information and is used in studying biological diversity and how climate change affects it. The major classifications in Thornthwaite's climate classification are microthermal, mesothermal, and megathermal. Finally, the Bergeron and Spatial Synoptic Classification systems focus on the origin of air masses that define the climate of a region.
Paleoclimatology is the study of ancient climates. Paleoclimatologists seek to explain climate variations for all parts of the Earth during any given geologic period, beginning with the time of the Earth's formation. Since very few direct observations of climate were available before the 19th century, paleoclimates are inferred from proxy variables. They include non-biotic evidence—such as sediments found in lake beds and ice cores—and biotic evidence—such as tree rings and coral. Climate models are mathematical models of past, present, and future climates. Climate change may occur over long and short timescales due to various factors. Recent warming is discussed in terms of global warming, which results in redistributions of biota. For example, as climate scientist Lesley Ann Hughes has written: "a 3 °C [5 °F] change in mean annual temperature corresponds to a shift in isotherms of approximately 300–400 km [190–250 mi] in latitude (in the temperate zone) or 500 m [1,600 ft] in elevation. Therefore, species are expected to move upwards in elevation or towards the poles in latitude in response to shifting climate zones."
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Crystal
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Q43533
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A crystal or crystalline solid is a solid material whose constituents (such as atoms, molecules, or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions. In addition, macroscopic single crystals are usually identifiable by their geometrical shape, consisting of flat faces with specific, characteristic orientations. The scientific study of crystals and crystal formation is known as crystallography. The process of crystal formation via mechanisms of crystal growth is called crystallization or solidification.
The word crystal derives from the Ancient Greek word κρύσταλλος (krustallos), meaning both "ice" and "rock crystal", from κρύος (kruos), "icy cold, frost".
Examples of large crystals include snowflakes, diamonds, and table salt. Most inorganic solids are not crystals but polycrystals, i.e. many microscopic crystals fused together into a single solid. Polycrystals include most metals, rocks, ceramics, and ice. A third category of solids is amorphous solids, where the atoms have no periodic structure whatsoever. Examples of amorphous solids include glass, wax, and many plastics.
Despite the name, lead crystal, crystal glass, and related products are not crystals, but rather types of glass, i.e. amorphous solids.
Crystals, or crystalline solids, are often used in pseudoscientific practices such as crystal therapy, and, along with gemstones, are sometimes associated with spellwork in Wiccan beliefs and related religious movements.
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Common Era
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Q208141
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Common Era (CE) and Before the Common Era (BCE) are year notations for the Gregorian calendar (and its predecessor, the Julian calendar), the world's most widely used calendar era. Common Era and Before the Common Era are alternatives to the original Anno Domini (AD) and Before Christ (BC) notations used for the same calendar era. The two notation systems are numerically equivalent: "2025 CE" and "AD 2025" each describe the current year; "400 BCE" and "400 BC" are the same year.
The expression can be traced back to 1615, when it first appears in a book by Johannes Kepler as the Latin: annus aerae nostrae vulgaris (year of our common era), and to 1635 in English as "Vulgar Era". The term "Common Era" can be found in English as early as 1708, and became more widely used in the mid-19th century by Jewish religious scholars. Since the late 20th century, BCE and CE have become popular in academic and scientific publications on the grounds that BCE and CE are religiously neutral terms. They have been promoted as more sensitive to non-Christians by not referring to Jesus, the central figure of Christianity, especially via the religious terms "Christ" and Dominus ("Lord") used by the other abbreviations. Nevertheless, its epoch remains the same as that used for the Anno Domini era.
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Chechnya
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Q5187
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Chechnya, officially the Chechen Republic, is a republic of Russia. It is situated in the North Caucasus of Eastern Europe, between the Caspian Sea and Black Sea. The republic forms a part of the North Caucasian Federal District, and shares land borders with Georgia to its south; with the Russian republics of Dagestan, Ingushetia, and North Ossetia–Alania to its east, north, and west; and with Stavropol Krai to its northwest.
After the dissolution of the Soviet Union in 1991, the Checheno-Ingush ASSR split into two parts: the Republic of Ingushetia and the Chechen Republic. The latter proclaimed the Chechen Republic of Ichkeria, which declared independence, while the former sided with Russia. Following the First Chechen War of 1994–1996 with Russia, Chechnya gained de facto independence as the Chechen Republic of Ichkeria, although de jure it remained a part of Russia. Russian federal control was restored in the Second Chechen War of 1999–2009, with Chechen politics being dominated by the former Ichkerian mufti Akhmad Kadyrov, and later his son Ramzan Kadyrov.
The republic covers an area of 17,500 square kilometres (6,800 square miles), with a population of over 1.5 million residents as of 2021. It is home to the indigenous Chechens, part of the Nakh peoples and who adhere primarily to the Islamic faith. Grozny is the capital and largest city.
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Central America
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Q27611
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Central America is a subregion of North America. Its political boundaries are defined as bordering Mexico to the north, Colombia to the southeast, the Caribbean to the east, and the Pacific Ocean to the southwest. Central America is usually defined as consisting of seven countries: Belize, Costa Rica, El Salvador, Guatemala, Honduras, Nicaragua, and Panama. Within Central America is the Mesoamerican biodiversity hotspot, which extends from southern Mexico to southeastern Panama. Due to the presence of several active geologic faults and the Central America Volcanic Arc, there is a high amount of seismic activity in the region, such as volcanic eruptions and earthquakes, which has resulted in death, injury, and property damage.
Most of Central America falls under the Isthmo-Colombian cultural area. Before the Spanish expedition of Christopher Columbus' voyages to the Americas, hundreds of indigenous peoples made their homes in the area. From the year 1502 onwards, Spain began their colonization. From 1609 to 1821, the majority of Central American territories (except for what would become Belize and Panama and including the modern Mexican state of Chiapas) were governed by the viceroyalty of New Spain from Mexico City as the Captaincy General of Guatemala. On 24 August 1821, Spanish Viceroy Juan de O'Donojú signed the Treaty of Córdoba, which established New Spain's independence and autonomy from mainland Spain. On 15 September, the Act of Independence of Central America was enacted to announce Central America's separation from the Spanish Empire. Some of New Spain's provinces in the Central American region were invaded and annexed to the First Mexican Empire; however in 1823 they seceded from Mexico to form the Federal Republic of Central America until 1838.
In 1838, Costa Rica, Guatemala, Honduras, and Nicaragua became the first of Central America's seven states to become independent countries, followed by El Salvador in 1841, Panama in 1903, and Belize in 1981. Despite the dissolution of the Federal Republic of Central America, the five remaining countries, save for Panama and Belize, all preserved and maintained a Central American identity.
The Spanish-speaking countries officially include both North America and South America as a single continent, América, which is split into four subregions: Central America, The Caribbean (a.k.a. the West Indies), North America (Mexico and Northern America), and South America.
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Claudius
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Q1411
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Tiberius Claudius Caesar Augustus Germanicus ( KLAW-dee-əs; Classical Latin: [tiˈbɛːrijus ˈkɫaːwdijus ˈkaːjsar awˈɡuːstus ɡɛrˈmaːnikus]; 1 August 10 BC – 13 October AD 54), or Claudius, was a Roman emperor, ruling from AD 41 to 54. A member of the Julio-Claudian dynasty, Claudius was born to Drusus and Antonia Minor at Lugdunum in Roman Gaul, where his father was stationed as a military legate. He was the first Roman emperor to be born outside Italy.
As he had a limp and slight deafness due to an illness he suffered when young, he was ostracized by his family and was excluded from public office until his consulship (which was shared with his nephew, Caligula, in 37). Claudius's infirmity probably saved him from the fate of many other nobles during the purges throughout the reigns of Tiberius and Caligula, as potential enemies did not see him as a serious threat. His survival led to him being declared emperor by the Praetorian Guard after Caligula's assassination, at which point he was the last adult male of his family.
Despite his lack of experience, Claudius was an able and efficient administrator. He expanded the imperial bureaucracy to include freedmen, and helped restore the empire's finances after the excesses of Caligula's reign. He was also an ambitious builder, constructing new roads, aqueducts, and canals across the Empire. During his reign, the Empire started its successful conquest of Britain. Having a personal interest in law, he presided at public trials, and issued edicts daily. He was seen as vulnerable throughout his reign, particularly by elements of the nobility. Claudius was constantly forced to shore up his position, which resulted in the deaths of many senators. Those events damaged his reputation among the ancient writers, though more recent historians have revised that opinion. Many authors contend that he was murdered by his own wife, Agrippina the Younger. After his death at the age of 63, his grandnephew and legally adopted step-son, Nero, succeeded him as emperor.
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Cologne
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Q365
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Cologne ( kə-LOHN; German: Köln [kœln] ; Kölsch: Kölle [ˈkœlə] ) is the largest city of the German state of North Rhine-Westphalia and the fourth-most populous city of Germany with nearly 1.1 million inhabitants in the city proper and over 3.1 million people in the Cologne Bonn urban region. Cologne is also part of the Rhine-Ruhr metropolitan region, the second biggest metropolitan region by GDP in the European Union. Centered on the left (west) bank of the Rhine, Cologne is located on the River Rhine (Lower Rhine), about 35 km (22 mi) southeast of the North Rhine-Westphalia state capital Düsseldorf and 25 km (16 mi) northwest of Bonn, the former capital of West Germany.
The city's medieval Cologne Cathedral (Kölner Dom) was the world's tallest building from 1880 to 1890 and is today the third-tallest church and tallest cathedral in the world. It was constructed to house the Shrine of the Three Kings and is a globally recognized landmark and one of the most visited sights and pilgrimage destinations in Europe. The cityscape is further shaped by the Twelve Romanesque churches of Cologne. Cologne is famous for Eau de Cologne, which has been produced in the city since 1709; "cologne" has since come to be a generic term.
Cologne was founded and established in Germanic Ubii territory in the 1st century CE as the Roman Colonia Agrippina, hence its name. Agrippina was later dropped (except in Latin), and Colonia became the name of the city in its own right, which developed into modern German as Köln. Cologne, the French version of the city's name, has become standard in English as well. Cologne functioned as the capital of the Roman province of Germania Inferior and as the headquarters of the Roman military in the region until occupied by the Franks in 462. During the Middle Ages the city flourished as being located on one of the most important major trade routes between eastern and western Europe (including the Brabant Road, Via Regia and Publica). Cologne was a free imperial city of the Holy Roman Empire and one of the major members of the trade union Hanseatic League. It was one of the largest European cities in medieval and renaissance times.
Prior to World War II, the city had undergone occupations by the French (1794–1815) and the British (1918–1926), and was part of Prussia beginning in 1815. Cologne was one of the most heavily bombed cities in Germany during World War II. The bombing reduced the population by 93% mainly due to evacuation, and destroyed around 80% of the millennia-old city center. The post-war rebuilding has resulted in a mixed cityscape, restoring most major historic landmarks like city gates and churches (31 of them being Romanesque). The city nowadays consists of around 25% pre World War II buildings and boasts around 9,000 historic buildings.
Cologne is a major cultural center for the Rhineland; it hosts more than 30 museums and hundreds of galleries. There are many institutions of higher education, most notably the University of Cologne, one of Europe's oldest and largest universities; the Technical University of Cologne, Germany's largest university of applied sciences; and the German Sport University Cologne. It hosts three Max Planck science institutes and is a major research hub for the aerospace industry, with the German Aerospace Center and the European Astronaut Centre headquarters. Lufthansa, Europe's largest airline, have their main corporate headquarters in Cologne. It also has a significant chemical and automobile industry. Cologne Bonn Airport is a regional hub, the main airport for the region being Düsseldorf Airport. The Cologne Trade Fair hosts a number of trade shows.
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Calvin Coolidge
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Q36023
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Calvin Coolidge (born John Calvin Coolidge Jr.; KOOL-ij; July 4, 1872 – January 5, 1933) was the 30th president of the United States, serving from 1923 to 1929. A Republican lawyer from Massachusetts, he previously served as the 29th vice president from 1921 to 1923 under President Warren G. Harding, and as the 48th governor of Massachusetts from 1919 to 1921. Coolidge gained a reputation as a small-government conservative with a taciturn personality and dry sense of humor that earned him the nickname "Silent Cal".
Coolidge began his career as a member of the Massachusetts State House. He rose up the ranks of Massachusetts politics and was elected governor in 1918. As governor, Coolidge ran on the record of fiscal conservatism, strong support for women's suffrage, and vague opposition to Prohibition. His prompt and effective response to the Boston police strike of 1919 thrust him into the national spotlight as a man of decisive action. The following year, the Republican Party nominated Coolidge as the running mate to Senator Warren G. Harding in the 1920 presidential election, which they won in a landslide. Coolidge served as vice president until Harding's death in 1923, after which he assumed the presidency.
During his presidency, Coolidge restored public confidence in the White House after the Harding administration's many scandals. He signed into law the Indian Citizenship Act of 1924, which granted U.S. citizenship to all Native Americans, and oversaw a period of rapid and expansive economic growth known as the "Roaring Twenties", leaving office with considerable popularity. Coolidge was known for his hands-off governing approach and pro-business stance; biographer Claude Fuess wrote: "He embodied the spirit and hopes of the middle class, could interpret their longings and express their opinions. That he did represent the genius of the average is the most convincing proof of his strength." Coolidge chose not to run again in 1928, remarking that ten years as president would be "longer than any other man has had it—too long!"
Coolidge is widely admired for his stalwart support of racial equality during a period of heightened racial tension, and is highly regarded by advocates of smaller government and laissez-faire economics; supporters of an active central government generally view him far less favorably. His critics argue that he failed to use the country's economic boom to help struggling farmers and workers in other flailing industries, and there is still much debate among historians about the extent to which Coolidge's economic policies contributed to the onset of the Great Depression, which began shortly after he left office. Scholars have ranked Coolidge in the lower half of U.S. presidents.
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Cardinal (Catholic Church)
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Q45722
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A cardinal is a senior member of the clergy of the Catholic Church. As titular members of the clergy of the Diocese of Rome, they serve as advisors to the pope, who is the bishop of Rome and the visible head of the worldwide Catholic Church. Cardinals are chosen and formally created by the pope, and typically hold the title for life. Collectively, they constitute the College of Cardinals. The most solemn responsibility of the cardinals is to elect a new pope in a conclave, almost always from among themselves, with a few historical exceptions, when the Holy See is vacant.
During the period between a pope's death or resignation and the election of his successor, the day-to-day governance of the Holy See is in the hands of the College of Cardinals. The right to participate in a conclave is limited to cardinals who have not reached the age of 80 years by the day the vacancy occurs. Cardinals collectively participate in papal consistories, in which matters of importance to the Church are considered and new cardinals may be created. Cardinals of working age are also often appointed to roles overseeing dicasteries (departments) of the Roman Curia, the central administration of the Catholic Church.
Cardinals are drawn from a variety of backgrounds, being appointed as cardinals in addition to their existing roles within the Church. Most cardinals are bishops and archbishops leading dioceses and archdioceses around the world – often the most prominent diocese or archdiocese in their country. Others are titular bishops who are current or former officials within the Roman Curia, generally the heads of dicasteries and other bodies linked to the Curia. A very small number are priests recognised by the pope for their service to the Church. Canon law requires them to be generally consecrated as bishops before they are made cardinals, but some are granted a papal dispensation. There are no strict criteria for elevation to the College of Cardinals. Since 1917, a potential cardinal must already be at least a priest, but laymen have been cardinals in the past. The selection is entirely up to the pope, and tradition is his only guide.
As of 16 May 2025, there are 251 serving cardinals, of whom 134 are eligible to vote in a conclave to elect a new pope.
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Cell nucleus
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Q40260
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The cell nucleus (from Latin nucleus or nuculeus 'kernel, seed'; pl.: nuclei) is a membrane-bound organelle found in eukaryotic cells. Eukaryotic cells usually have a single nucleus, but a few cell types, such as mammalian red blood cells, have no nuclei, and a few others including osteoclasts have many. The main structures making up the nucleus are the nuclear envelope, a double membrane that encloses the entire organelle and isolates its contents from the cellular cytoplasm; and the nuclear matrix, a network within the nucleus that adds mechanical support.
The cell nucleus contains nearly all of the cell's genome. Nuclear DNA is often organized into multiple chromosomes – long strands of DNA dotted with various proteins, such as histones, that protect and organize the DNA. The genes within these chromosomes are structured in such a way to promote cell function. The nucleus maintains the integrity of genes and controls the activities of the cell by regulating gene expression.
Because the nuclear envelope is impermeable to large molecules, nuclear pores are required to regulate nuclear transport of molecules across the envelope. The pores cross both nuclear membranes, providing a channel through which larger molecules must be actively transported by carrier proteins while allowing free movement of small molecules and ions. Movement of large molecules such as proteins and RNA through the pores is required for both gene expression and the maintenance of chromosomes. Although the interior of the nucleus does not contain any membrane-bound subcompartments, a number of nuclear bodies exist, made up of unique proteins, RNA molecules, and particular parts of the chromosomes. The best-known of these is the nucleolus, involved in the assembly of ribosomes.
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Christmas
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Q19809
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Christmas is an annual festival commemorating the birth of Jesus Christ, observed primarily on December 25 as a religious and cultural celebration among billions of people around the world. A liturgical feast central to Christianity, Christmas preparation begins on the First Sunday of Advent and it is followed by Christmastide, which historically in the West lasts twelve days and culminates on Twelfth Night. Christmas Day is a public holiday in many countries, is observed religiously by a majority of Christians, as well as celebrated culturally by many non-Christians, and forms an integral part of the annual holiday season.
The traditional Christmas narrative recounted in the New Testament, known as the Nativity of Jesus, says that Jesus was born in Bethlehem, in accordance with messianic prophecies. When Joseph and Mary arrived in the city, the inn had no room, and so they were offered a stable where the Christ Child was soon born, with angels proclaiming this news to shepherds, who then spread the word.
There are different hypotheses regarding the date of Jesus's birth. In the early fourth century, the church fixed the date as December 25, the date of the winter solstice in the Roman Empire. It is nine months after Annunciation on March 25, also the Roman date of the spring equinox. Most Christians celebrate on December 25 in the Gregorian calendar, which has been adopted almost universally in the civil calendars used in countries throughout the world. However, part of the Eastern Christian Churches celebrate Christmas on December 25 of the older Julian calendar, which currently corresponds to January 7 in the Gregorian calendar. For Christians, celebrating that God came into the world in the form of man to atone for the sins of humanity is more important than knowing Jesus's exact birth date.
The customs associated with Christmas in various countries have a mix of pre-Christian, Christian, and secular themes and origins. Popular holiday traditions include gift giving; completing an Advent calendar or Advent wreath; Christmas music and caroling; watching Christmas movies; viewing a Nativity play; an exchange of Christmas cards; attending church services; a special meal; and displaying various Christmas decorations, including Christmas trees, Christmas lights, nativity scenes, poinsettias, garlands, wreaths, mistletoe, and holly. Additionally, several related and often interchangeable figures, known as Santa Claus, Father Christmas, Saint Nicholas, and Christkind, are associated with bringing gifts to children during the Christmas season and have their own body of traditions and lore. Because gift-giving and many other aspects of the Christmas festival involve heightened economic activity, the holiday has become a significant event and a key sales period for retailers and businesses. Over the past few centuries, Christmas has had a steadily growing economic effect in many regions of the world.
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Colorado Springs, Colorado
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Q49258
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Colorado Springs is the most populous city in El Paso County, Colorado, United States, and its county seat. The population of 478,961 at the 2020 census, a 15.02% increase since 2010. Colorado Springs is the second-most populous city and most extensive city in the state of Colorado, and the 40th-most-populous city in the United States. It is the principal city of the Colorado Springs metropolitan area, which had 755,105 residents in 2020, and the second-most prominent city of the Front Range Urban Corridor. It is located in east-central Colorado on Fountain Creek, 70 miles (113 km) south of Denver.
At 6,035 feet (1,839 m), the city stands over 1 mile (1.6 km) above sea level. It is near the base of Pikes Peak, which rises 14,115 feet (4,302.31 m) above sea level on the eastern edge of the Southern Rocky Mountains. The city is the largest city north of Mexico above 6,000 feet (1,800 m) in elevation.
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Claude Debussy
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Q4700
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Achille Claude Debussy (French pronunciation: [aʃil klod dəbysi]; 22 August 1862 – 25 March 1918) was a French composer. He is sometimes seen as the first Impressionist composer, although he vigorously rejected the term. He was among the most influential composers of the late 19th and early 20th centuries.
Born to a family of modest means and little cultural involvement, Debussy showed enough musical talent to be admitted at the age of ten to France's leading music college, the Conservatoire de Paris. He originally studied the piano, but found his vocation in innovative composition, despite the disapproval of the Conservatoire's conservative professors. He took many years to develop his mature style, and was nearly 40 when he achieved international fame in 1902 with the only opera he completed, Pelléas et Mélisande.
Debussy's orchestral works include Prélude à l'après-midi d'un faune (1894), Nocturnes (1897–1899) and Images (1905–1912). His music was to a considerable extent a reaction against Wagner and the German musical tradition. He regarded the classical symphony as obsolete and sought an alternative in his "symphonic sketches", La mer (1903–1905). His piano works include sets of 24 Préludes and 12 Études. Throughout his career he wrote mélodies based on a wide variety of poetry, including his own. He was greatly influenced by the Symbolist poetic movement of the later 19th century. A small number of works, including the early La Damoiselle élue and the late Le Martyre de saint Sébastien have important parts for chorus. In his final years, he focused on chamber music, completing three of six planned sonatas for different combinations of instruments.
With early influences including Russian and Far Eastern music and works by Chopin, Debussy developed his own style of harmony and orchestral colouring, derided – and unsuccessfully resisted – by much of the musical establishment of the day. His works have strongly influenced a wide range of composers including Béla Bartók, Igor Stravinsky, George Gershwin, Olivier Messiaen, George Benjamin, and the jazz pianist and composer Bill Evans. Debussy died from cancer at his home in Paris at the age of 55 after a composing career of a little more than 30 years.
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Chemical reaction
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Q36534
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A chemical reaction is a process that leads to the chemical transformation of one set of chemical substances to another. When chemical reactions occur, the atoms are rearranged and the reaction is accompanied by an energy change as new products are generated. Classically, chemical reactions encompass changes that only involve the positions of electrons in the forming and breaking of chemical bonds between atoms, with no change to the nuclei (no change to the elements present), and can often be described by a chemical equation. Nuclear chemistry is a sub-discipline of chemistry that involves the chemical reactions of unstable and radioactive elements where both electronic and nuclear changes can occur.
The substance (or substances) initially involved in a chemical reaction are called reactants or reagents. Chemical reactions are usually characterized by a chemical change, and they yield one or more products, which usually have properties different from the reactants. Reactions often consist of a sequence of individual sub-steps, the so-called elementary reactions, and the information on the precise course of action is part of the reaction mechanism. Chemical reactions are described with chemical equations, which symbolically present the starting materials, end products, and sometimes intermediate products and reaction conditions.
Chemical reactions happen at a characteristic reaction rate at a given temperature and chemical concentration. Some reactions produce heat and are called exothermic reactions, while others may require heat to enable the reaction to occur, which are called endothermic reactions. Typically, reaction rates increase with increasing temperature because there is more thermal energy available to reach the activation energy necessary for breaking bonds between atoms.
A reaction may be classified as redox in which oxidation and reduction occur or non-redox in which there is no oxidation and reduction occurring. Most simple redox reactions may be classified as a combination, decomposition, or single displacement reaction.
Different chemical reactions are used during chemical synthesis in order to obtain the desired product. In biochemistry, a consecutive series of chemical reactions (where the product of one reaction is the reactant of the next reaction) form metabolic pathways. These reactions are often catalyzed by protein enzymes. Enzymes increase the rates of biochemical reactions, so that metabolic syntheses and decompositions impossible under ordinary conditions can occur at the temperature and concentrations present within a cell.
The general concept of a chemical reaction has been extended to reactions between entities smaller than atoms, including nuclear reactions, radioactive decays and reactions between elementary particles, as described by quantum field theory.
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Commuter rail
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Q1412403
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Commuter rail or suburban rail is a passenger rail service that primarily operates within a metropolitan area, connecting commuters to a central city from adjacent suburbs or commuter towns. Commuter rail systems can use locomotive-hauled trains or multiple units, using electric or diesel propulsion. Distance charges or zone pricing may be used.
The term can refer to systems with a wide variety of different features and service frequencies, but is often used in contrast to rapid transit or light rail.
Some services share similarities with both commuter rail and high-frequency rapid transit; examples include German S-Bahn in some cities, the Réseau Express Régional (RER) in Paris, the S Lines in Milan, many Japanese commuter systems, the East Rail line in Hong Kong, and some Australasian suburban networks, such as Sydney Trains. Many commuter rail systems share tracks with other passenger services and freight.
In North America, commuter rail sometimes refers only to systems that primarily operate during rush hour and offer little to no service for the rest of the day, with regional rail being used to refer to systems that offer all-day service.
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Cairo
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Q85
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Cairo is the capital and largest city of Egypt and the Cairo Governorate, being home to more than 10 million people. It is also part of the largest urban agglomeration in Africa, the Arab world, and the Middle East. The Greater Cairo metropolitan area is one of the largest in the world by population with over 22.1 million people.
The area that would become Cairo was part of ancient Egypt, as the Giza pyramid complex and the ancient cities of Memphis and Heliopolis are near-by. Located near the Nile Delta, the predecessor settlement was Fustat following the Muslim conquest of Egypt in 641 next to an existing ancient Roman fortress, Babylon. Subsequently, Cairo was founded by the Fatimid dynasty in 969. It later superseded Fustat as the main urban centre during the Ayyubid and Mamluk periods (12th–16th centuries).
Cairo has since become a longstanding centre of political and cultural life, and is titled "the city of a thousand minarets" for its preponderance of Islamic architecture. Cairo's historic center was awarded World Heritage Site status in 1979. Cairo is considered a World City with a "Beta +" classification according to GaWC.
Cairo has the oldest and largest film and music industry in the Arab world, as well as Egypt's oldest institution of higher learning, Al-Azhar University. Many international media, businesses, and organizations have regional headquarters in the city; the Arab League has had its headquarters in Cairo for most of its existence.
Cairo, like many other megacities, suffers from high levels of pollution and traffic. The Cairo Metro, opened in 1987, is the oldest metro system in Africa, and ranks amongst the fifteen busiest in the world, with over 1 billion annual passenger rides. The economy of Cairo was ranked first in the Middle East in 2005, and 43rd globally on Foreign Policy's 2010 Global Cities Index.
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Chaos theory
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Q166314
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Chaos theory is an interdisciplinary area of scientific study and branch of mathematics. It focuses on underlying patterns and deterministic laws of dynamical systems that are highly sensitive to initial conditions. These were once thought to have completely random states of disorder and irregularities. Chaos theory states that within the apparent randomness of chaotic complex systems, there are underlying patterns, interconnection, constant feedback loops, repetition, self-similarity, fractals and self-organization. The butterfly effect, an underlying principle of chaos, describes how a small change in one state of a deterministic nonlinear system can result in large differences in a later state (meaning there is sensitive dependence on initial conditions). A metaphor for this behavior is that a butterfly flapping its wings in Brazil can cause or prevent a tornado in Texas.: 181–184
Small differences in initial conditions, such as those due to errors in measurements or due to rounding errors in numerical computation, can yield widely diverging outcomes for such dynamical systems, rendering long-term prediction of their behavior impossible in general. This can happen even though these systems are deterministic, meaning that their future behavior follows a unique evolution and is fully determined by their initial conditions, with no random elements involved. In other words, the deterministic nature of these systems does not make them predictable. This behavior is known as deterministic chaos, or simply chaos. The theory was summarized by Edward Lorenz as:
Chaos: When the present determines the future but the approximate present does not approximately determine the future.
Chaotic behavior exists in many natural systems, including fluid flow, heartbeat irregularities, weather and climate. It also occurs spontaneously in some systems with artificial components, such as road traffic. This behavior can be studied through the analysis of a chaotic mathematical model or through analytical techniques such as recurrence plots and Poincaré maps. Chaos theory has applications in a variety of disciplines, including meteorology, anthropology, sociology, environmental science, computer science, engineering, economics, ecology, and pandemic crisis management. The theory formed the basis for such fields of study as complex dynamical systems, edge of chaos theory and self-assembly processes.
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Channel 4
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Q501070
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Channel 4 is a British free-to-air public broadcast television channel owned and operated by Channel Four Television Corporation. It is publicly owned but, unlike the BBC, it receives no public funding and is funded entirely by its commercial activities, including advertising. It began its transmission in 1982 and was established to provide a fourth television service in the United Kingdom. At the time, the only other channels were the licence-funded BBC1 and BBC2, and a single commercial broadcasting network, ITV.
Originally a subsidiary of the Independent Broadcasting Authority (IBA), the station is now owned and operated by Channel Four Television Corporation, a public corporation of the Department for Culture, Media and Sport, which was established in 1990 and came into operation in 1993. Until 2010, Channel 4 did not broadcast in Wales, but many of its programmes were re-broadcast there by the Welsh fourth channel S4C. In 2010, Channel 4 extended service into Wales and became a nationwide television channel. The network's headquarters are in London and Leeds, with creative hubs in Manchester, Glasgow and Bristol.
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Church (building)
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Q16970
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A church, church building, church house, or chapel is a building used for Christian worship services, Christian religious activities. The earliest identified Christian church is a house church founded between 233 AD and 256 AD.
Sometimes, the word church is used erroneously to refer to the buildings of other religions, such as mosques and synagogues. Church is also used to describe a body or an assembly of Christian believers, while "the Church" may be used to refer to the worldwide Christian religious community as a whole.
In traditional Christian architecture, the plan view of a church often forms a Christian cross with the centre aisle and seating representing the vertical beam and the bema and altar forming the horizontal. Towers or domes may inspire contemplation of the heavens. Modern churches have a variety of architectural styles and layouts. Some buildings designed for other purposes have been converted to churches, while many original church buildings have been put to other uses. From the 11th to the 14th century, there had been a wave of church construction in Western Europe.
Many churches worldwide are of considerable historical, national, cultural, and architectural significance, with several included in the list of UNESCO World Heritage Sites.
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Council of Trent
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Q172991
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The Council of Trent (Latin: Concilium Tridentinum), held between 1545 and 1563 in Trent (or Trento), now in northern Italy, was the 19th ecumenical council of the Catholic Church. Prompted by the Protestant Reformation at the time, it has been described as the "most impressive embodiment of the ideals of the Counter-Reformation." It was the last time an ecumenical council was organized outside the city of Rome.
The Council issued key statements and clarifications of the Church's doctrine and teachings, including scripture, the biblical canon, sacred tradition, original sin, justification, salvation, the sacraments, the Mass, and the veneration of saints and also issued condemnations of what it defined to be heresies committed by proponents of Protestantism. The consequences of the council were also significant with regard to the Church's liturgy and censorship.
The Council met for twenty-five sessions between 13 December 1545 and 4 December 1563. Pope Paul III, who convoked the council, oversaw the first eight sessions (1545–1547), while the twelfth to sixteenth sessions (1551–52) were overseen by Pope Julius III and the seventeenth to twenty-fifth sessions (1562–63) by Pope Pius IV. More than three hundred years passed until the next ecumenical council, the First Vatican Council, was convened in 1869.
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Canis Major
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Q10538
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Canis Major is a constellation in the southern celestial hemisphere. In the second century, it was included in Ptolemy's 48 constellations, and is counted among the 88 modern constellations. Its name is Latin for "greater dog" in contrast to Canis Minor, the "lesser dog"; both figures are commonly represented as following the constellation of Orion the hunter through the sky. The Milky Way passes through Canis Major and several open clusters lie within its borders, most notably M41.
Canis Major contains Sirius, the brightest star in the night sky, known as the "dog star". It is bright because of its proximity to the Solar System and its intrinsic brightness. In contrast, the other bright stars of the constellation are stars of great distance and high luminosity. At magnitude 1.5, Epsilon Canis Majoris (Adhara) is the second-brightest star of the constellation and the brightest source of extreme ultraviolet radiation in the night sky. Next in brightness are the yellow-white supergiant Delta (Wezen) at 1.8, the blue-white giant Beta (Mirzam) at 2.0, blue-white supergiants Eta (Aludra) at 2.4 and Omicron2 at 3.0, and white spectroscopic binary Zeta (Furud), also at 3.0. The red hypergiant VY CMa is one of the largest stars known, while the neutron star RX J0720.4-3125 has a radius of a mere 5 km.
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Impact crater
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Q55818
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An impact crater is a depression in the surface of a solid astronomical body formed by the hypervelocity impact of a smaller object. In contrast to volcanic craters, which result from explosion or internal collapse, impact craters typically have raised rims and floors that are lower in elevation than the surrounding terrain. Impact craters are typically circular, though they can be elliptical in shape or even irregular due to events such as landslides. Impact craters range in size from microscopic craters seen on lunar rocks returned by the Apollo Program to simple bowl-shaped depressions and vast, complex, multi-ringed impact basins. Meteor Crater is a well-known example of a small impact crater on Earth.
Impact craters are the dominant geographic features on many solid Solar System objects including the Moon, Mercury, Callisto, Ganymede, and most small moons and asteroids. On other planets and moons that experience more active surface geological processes, such as Earth, Venus, Europa, Io, Titan, and Triton, visible impact craters are less common because they become eroded, buried, or transformed by tectonic and volcanic processes over time. Where such processes have destroyed most of the original crater topography, the terms impact structure or astrobleme are more commonly used. In early literature, before the significance of impact cratering was widely recognised, the terms cryptoexplosion or cryptovolcanic structure were often used to describe what are now recognised as impact-related features on Earth.
The cratering records of very old surfaces, such as Mercury, the Moon, and the southern highlands of Mars, record a period of intense early bombardment in the inner Solar System around 3.9 billion years ago. The rate of crater production on Earth has since been considerably lower, but it is appreciable nonetheless. Earth experiences, on average, from one to three impacts large enough to produce a 20-kilometre-diameter (12 mi) crater every million years. This indicates that there should be far more relatively young craters on the planet than have been discovered so far. The cratering rate in the inner solar system fluctuates as a consequence of collisions in the asteroid belt that create a family of fragments that are often sent cascading into the inner solar system. Formed in a collision 80 million years ago, the Baptistina family of asteroids is thought to have caused a large spike in the impact rate. The rate of impact cratering in the outer Solar System could be different from the inner Solar System.
Although Earth's active surface processes quickly destroy the impact record, about 190 terrestrial impact craters have been identified. These range in diameter from a few tens of meters up to about 300 km (190 mi), and they range in age from recent times (e.g. the Sikhote-Alin craters in Russia whose creation was witnessed in 1947) to more than two billion years, though most are less than 500 million years old because geological processes tend to obliterate older craters. They are also selectively found in the stable interior regions of continents. Few undersea craters have been discovered because of the difficulty of surveying the sea floor, the rapid rate of change of the ocean bottom, and the subduction of the ocean floor into Earth's interior by processes of plate tectonics.
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Compact disc
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Q34467
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The compact disc (CD) is a digital optical disc data storage format co-developed by Philips and Sony to store and play digital audio recordings. It employs the Compact Disc Digital Audio (CD-DA) standard and was capable of holding of uncompressed stereo audio. First released in Japan in October 1982, the CD was the second optical disc format to reach the market, following the larger LaserDisc (LD). In later years, the technology was adapted for computer data storage as CD-ROM and subsequently expanded into various writable and multimedia formats. As of 2007, over 200 billion CDs (including audio CDs, CD-ROMs, and CD-Rs) had been sold worldwide.
Standard CDs have a diameter of 120 millimetres (4.7 inches) and typically hold up to 74 minutes of audio or approximately 650 MiB (681,574,400 bytes) of data. This was later reguarly extended to 80 minutes or 700 MiB (734,003,200 bytes) by reducing the spacing between data tracks, with some discs unofficially reaching up to 99 minutes or 870 MiB (912,261,120 bytes) which falls outside established specifications. Smaller variants, such as the Mini CD, range from 60 to 80 millimetres (2.4 to 3.1 in) in diameter and have been used for CD singles or distributing device drivers and software.
The CD gained widespread popularity in the late 1980s and early 1990s. By 1991, it had surpassed the phonograph record and the cassette tape in sales in the United States, becoming the dominant physical audio format. By 2000, CDs accounted for 92.3% of the U.S. music market share. The CD is widely regarded as the final dominant format of the album era, before the rise of MP3, digital downloads, and streaming platforms in the mid-2000s led to its decline.
Beyond audio playback, the compact disc was adapted for general-purpose data storage under the CD-ROM format, which initially offered more capacity than contemporary personal computer hard disk drives. Additional derived formats include write-once discs (CD-R), rewritable media (CD-RW), and multimedia applications such as Video CD (VCD), Super Video CD (SVCD), Photo CD, Picture CD, Compact Disc Interactive (CD-i), Enhanced Music CD, and Super Audio CD (SACD), the latter of which can include a standard CD-DA layer for backward compatibility.
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Clarinet
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Q8343
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The clarinet is a single-reed musical instrument in the woodwind family, with a nearly cylindrical bore and a flared bell.
Clarinets comprise a family of instruments of differing sizes and pitches. The clarinet family is the largest woodwind family, ranging from the BB♭ contrabass to the A♭ piccolo. The B♭ soprano clarinet is the most common type, and is the instrument usually indicated by the word "clarinet".
German instrument maker Johann Christoph Denner is generally credited with inventing the clarinet sometime around 1700 by adding a register key to the chalumeau, an earlier single-reed instrument. Over time, additional keywork and airtight pads were added to improve the tone and playability. Today the clarinet is a standard fixture of the orchestra and concert band and is used in classical music, military bands, klezmer, jazz, and other styles.
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Chromosome
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Q37748
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A chromosome is a package of DNA containing part or all of the genetic material of an organism. In most chromosomes, the very long thin DNA fibers are coated with nucleosome-forming packaging proteins; in eukaryotic cells, the most important of these proteins are the histones. Aided by chaperone proteins, the histones bind to and condense the DNA molecule to maintain its integrity. These eukaryotic chromosomes display a complex three-dimensional structure that has a significant role in transcriptional regulation.
Normally, chromosomes are visible under a light microscope only during the metaphase of cell division, where all chromosomes are aligned in the center of the cell in their condensed form. Before this stage occurs, each chromosome is duplicated (S phase), and the two copies are joined by a centromere—resulting in either an X-shaped structure if the centromere is located equatorially, or a two-armed structure if the centromere is located distally; the joined copies are called 'sister chromatids'. During metaphase, the duplicated structure (called a 'metaphase chromosome') is highly condensed and thus easiest to distinguish and study. In animal cells, chromosomes reach their highest compaction level in anaphase during chromosome segregation.
Chromosomal recombination during meiosis and subsequent sexual reproduction plays a crucial role in genetic diversity. If these structures are manipulated incorrectly, through processes known as chromosomal instability and translocation, the cell may undergo mitotic catastrophe. This will usually cause the cell to initiate apoptosis, leading to its own death, but the process is occasionally hampered by cell mutations that result in the progression of cancer.
The term 'chromosome' is sometimes used in a wider sense to refer to the individualized portions of chromatin in cells, which may or may not be visible under light microscopy. In a narrower sense, 'chromosome' can be used to refer to the individualized portions of chromatin during cell division, which are visible under light microscopy due to high condensation.
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Ceramic
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Q45621
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A ceramic is any of the various hard, brittle, heat-resistant, and corrosion-resistant materials made by shaping and then firing an inorganic, nonmetallic material, such as clay, at a high temperature. Common examples are earthenware, porcelain, and brick.
The earliest ceramics made by humans were fired clay bricks used for building house walls and other structures. Other pottery objects such as pots, vessels, vases and figurines were made from clay, either by itself or mixed with other materials like silica, hardened by sintering in fire. Later, ceramics were glazed and fired to create smooth, colored surfaces, decreasing porosity through the use of glassy, amorphous ceramic coatings on top of the crystalline ceramic substrates. Ceramics now include domestic, industrial, and building products, as well as a wide range of materials developed for use in advanced ceramic engineering, such as semiconductors.
The word ceramic comes from the Ancient Greek word κεραμικός (keramikós), meaning "of or for pottery" (from κέραμος (kéramos) 'potter's clay, tile, pottery'). The earliest known mention of the root ceram- is the Mycenaean Greek ke-ra-me-we, workers of ceramic, written in Linear B syllabic script. The word ceramic can be used as an adjective to describe a material, product, or process, or it may be used as a noun, either singular or, more commonly, as the plural noun ceramics.
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Concord, New Hampshire
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Q28249
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Concord () is the capital city of the U.S. state of New Hampshire and the seat of Merrimack County. As of the 2020 United States census the population was 43,976, making it the 3rd most populous city in New Hampshire after Manchester and Nashua.
The area was first settled by Europeans in 1659. On January 17, 1725, the Province of Massachusetts Bay granted the Concord area as the Plantation of Penacook,: 107 and it was incorporated on February 9, 1734, as the Town of Rumford. Governor Benning Wentworth gave the city its current name in 1765 following a boundary dispute with the neighboring town of Bow; the name was meant to signify the new harmony between the two towns. In 1808, Concord was named the official seat of state government, and the State House was completed in 1819; it remains the oldest U.S. state capitol wherein the legislature meets in its original chambers.
Concord is entirely within the Merrimack River watershed and the city is centered on the river. The Merrimack runs from northwest to southeast through the city. The city's eastern boundary is formed by the Soucook River, which separates Concord from the town of Pembroke. The Turkey River passes through the southwestern quarter of the city. The city consists of its downtown, including the North End and South End neighborhoods, along with the four villages of Penacook, Concord Heights, East Concord, and West Concord. Penacook sits along the Contoocook River, just before it flows into the Merrimack.
As of 2020, the top employer in the city was the State of New Hampshire, and the largest private employer was Concord Hospital. Concord is home to the University of New Hampshire School of Law, New Hampshire's only law school; St. Paul's School, a private preparatory school; NHTI, a two-year community college; the New Hampshire Police Academy; and the New Hampshire Fire Academy. Concord's Old North Cemetery is the final resting place of Franklin Pierce, 14th President of the United States.
Interstate 89 and Interstate 93 are the two main interstate highways serving the city, and general aviation access is via Concord Municipal Airport. The nearest airport with commercial air service is Manchester–Boston Regional Airport, 23 miles (37 km) to the south. There has been no passenger rail service to Concord since 1981. Historically, the Boston and Maine Railroad served the city.
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Cello
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Q8371
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The violoncello ( VY-ə-lən-CHEL-oh, Italian pronunciation: [vjolonˈtʃɛllo]), normally simply abbreviated as cello ( CHEL-oh), is a middle pitched bowed (sometimes plucked and occasionally hit) string instrument of the violin family. Its four strings are usually tuned in perfect fifths: from low to high, C2, G2, D3 and A3. The viola's four strings are each an octave higher. Music for the cello is generally written in the bass clef; the tenor clef and treble clef are used for higher-range passages.
Played by a cellist or violoncellist, it enjoys a large solo repertoire with and without accompaniment, as well as numerous concerti. As a solo instrument, the cello uses its whole range, from bass to soprano, and in chamber music, such as string quartets and the orchestra's string section, it often plays the bass part, where it may be reinforced an octave lower by the double basses. Figured bass music of the Baroque era typically assumes a cello, viola da gamba or bassoon as part of the basso continuo group alongside chordal instruments such as organ, harpsichord, lute, or theorbo. Cellos are found in many other ensembles, from modern Chinese orchestras to cello rock bands.
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Cleveland Browns
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Q223527
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The Cleveland Browns are a professional American football team based in Cleveland. The Browns compete in the National Football League (NFL) as a member of the American Football Conference (AFC) North division. The team is named after original coach and co-founder Paul Brown. They play their home games at Huntington Bank Field, which opened in 1999, with administrative offices and training facilities in Berea, Ohio. The franchise's official club colors are brown, orange, and white. They are unique among the 32 member clubs of the NFL in that they do not have a logo on their helmets.
The franchise was founded in 1944 by Brown and businessman Arthur B. McBride as a charter member of the All-America Football Conference (AAFC), and began play in 1946. The Browns dominated the AAFC, compiling a 47–4–3 record in the league's four seasons and winning its championship in each. When the AAFC folded after the 1949 season, the Browns joined the NFL along with the San Francisco 49ers and the original Baltimore Colts. The Browns won a championship in their inaugural NFL season, as well as in the 1954, 1955, and 1964 seasons, and in a feat unequaled in any of the North American major professional sports, played in their league championship game in each of their first 10 years of existence, winning seven of those games. From 1965 to 1995, they qualified to play in the NFL playoffs 14 times, but did not win another championship or play in the Super Bowl during that period.
In 1995, owner Art Modell, who had purchased the Browns in 1961, announced plans to move the team to Baltimore. After threats of legal action from the city of Cleveland and fans, a compromise was reached in early 1996 that allowed Modell to establish the Baltimore Ravens as a new franchise while retaining the contracts of all Browns personnel. The Browns' intellectual property, including team name, logos, training facility, and history, were kept in trust and the franchise was regarded by the NFL as suspended, guaranteed to return no later than the 1999 season, either by relocation of an existing franchise or an expansion draft. While several of the existing franchises at the time considered relocating to Cleveland, in 1998 it was confirmed that the NFL would hold an expansion draft and field 31 teams when the Browns resumed play in 1999. Although the 1999 Browns were restocked via an expansion draft, the Browns are not considered to be an expansion franchise.
Since resuming operations in 1999, the Browns have struggled to find success, especially during the 2010s when they failed to post a winning season throughout the decade. They have had only four winning seasons (2002, 2007, 2020, and 2023), three playoff appearances (2002, 2020, and 2023), and one playoff win (2020), winning less than one third of their games in total, and in 2017 were only the second team in NFL history to have a 0–16 season after the 2008 Detroit Lions. The franchise has also been noted for a lack of stability with head coaches (10 full time - including two who were fired after only one season - and two interim since 1999) and quarterbacks (40 different starters since 1999). From 2003 to 2019, the Browns had a 17-season playoff drought, which ended during the 2020 season. They are one of four teams to have never appeared in a Super Bowl. Their lack of recent success has been such that their decades-long rivalry with the Pittsburgh Steelers—a rivalry that at one point the Browns had a 22-game lead in the all-time series—saw the Steelers overtake the Browns in the rivalry in 2007 and currently hold a 17-game edge over the Browns.
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Crete
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Q34374
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Crete ( KREET; Greek: Κρήτη, Modern: Kríti [ˈkriti], Ancient: Krḗtē [krɛ̌ːtεː]) is the largest and most populous of the Greek islands, the 88th largest island in the world and the fifth largest island in the Mediterranean Sea, after Sicily, Sardinia, Cyprus, and Corsica. Crete is located about 100 km (62 mi) south of the Peloponnese, and about 300 km (190 mi) southwest of Anatolia. Crete has an area of 8,450 km2 (3,260 sq mi) and a coastline of 1,046 km (650 mi). It bounds the southern border of the Aegean Sea, with the Sea of Crete (or North Cretan Sea) to the north and the Libyan Sea (or South Cretan Sea) to the south. Crete covers 260 km from west to east but is narrow from north to south, spanning three longitudes but only half a latitude.
Crete and a number of islands and islets that surround it constitute the Region of Crete (Greek: Περιφέρεια Κρήτης), which is the southernmost of the 13 top-level administrative units of Greece, and the fifth most populous of Greece's regions. Its capital and largest city is Heraklion, on the north shore of the island. As of 2021, the region had a population of 624,408. The Dodecanese are located to the northeast of Crete, while the Cyclades are situated to the north, separated by the Sea of Crete. The Peloponnese is to the region's northwest.
Crete was the center of Europe's first advanced civilization, the Minoans, from 2700 to 1420 BC. The Minoan civilization was overrun by the Mycenaean civilization from mainland Greece. Crete was later ruled by Rome, then successively by the Byzantine Empire, Andalusian Arabs, the Byzantine Empire again, the Venetian Republic, and the Ottoman Empire. In 1898 Crete, whose people had for some time wanted to join the Greek state, achieved independence from the Ottomans, formally becoming the Cretan State. Crete became part of Greece in December 1913.
The island is mostly mountainous, and its character is defined by a high mountain range crossing from west to east. It includes Crete's highest point, Mount Ida, and the range of the White Mountains (Lefka Ori) with 30 summits above 2,000 metres (6,600 ft) in altitude and the Samaria Gorge, a World Biosphere Reserve. Crete forms a significant part of the economy and cultural heritage of Greece, while retaining its own local cultural traits (such as its own poetry and music). The Nikos Kazantzakis airport at Heraklion and the Daskalogiannis airport at Chania serve international travelers. The Minoan palace at Knossos is also located in Heraklion.
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Camel
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Q7375
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A camel (from Latin: camelus and Ancient Greek: κάμηλος (kamēlos) from Ancient Semitic: gāmāl) is an even-toed ungulate in the genus Camelus that bears distinctive fatty deposits known as "humps" on its back. Camels have long been domesticated and, as livestock, they provide food (camel milk and meat) and textiles (fiber and felt from camel hair). Camels are working animals especially suited to their desert habitat and are a vital means of transport for passengers and cargo. There are three surviving species of camel. The one-humped dromedary makes up 94% of the world's camel population, and the two-humped Bactrian camel makes up 6%. The wild Bactrian camel is a distinct species that is not ancestral to the domestic Bactrian camel, and is now critically endangered, with fewer than 1,000 individuals.
The word camel is also used informally in a wider sense, where the more correct term is "camelid", to include all seven species of the family Camelidae: the true camels (the above three species), along with the "New World" camelids: the llama, the alpaca, the guanaco, and the vicuña, which belong to the separate tribe Lamini. Camelids originated in North America during the Eocene, with the ancestor of modern camels, Paracamelus, migrating across the Bering land bridge into Asia during the late Miocene, around 6 million years ago.
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Carolina Panthers
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Q330120
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The Carolina Panthers are a professional American football team based in Charlotte, North Carolina. The Panthers compete in the National Football League (NFL) as a member of the National Football Conference (NFC) South division. The team is headquartered in Bank of America Stadium in Uptown Charlotte, which also serves as the team's home field. The Panthers are supported throughout the Carolinas; although the team has played its home games in Charlotte since 1996, it played its home games at Memorial Stadium in Clemson, South Carolina, during its first season in 1995.
The Panthers were announced as the league's 29th franchise in 1993 and began play in 1995 under founding owner Jerry Richardson. The Panthers played well in their first two years, finishing 7–9 in 1995 (an all-time best record for an NFL expansion team's first season) and 12–4 the following year, winning the NFC West before ultimately losing to the eventual Super Bowl champion Green Bay Packers in the NFC Championship Game. They did not have another winning season until 2003 when they won the NFC Championship Game and reached Super Bowl XXXVIII, losing 32–29 to the New England Patriots. After recording playoff appearances in 2005 and 2008, the team failed to make another playoff appearance until 2013, the first of three consecutive NFC South titles. After losing in the divisional round to the San Francisco 49ers in 2013 and the Seattle Seahawks in 2014, the Panthers returned to the Super Bowl in 2015 but lost to the Denver Broncos. Since then, the team has appeared in the playoffs only once, in 2017. The team's five NFC South titles since the division's establishment in 2002 rank second to the Tampa Bay Buccaneers and New Orleans Saints who are both tied at seven.
The franchise is legally registered as Panther Football, LLC, and is controlled by David Tepper, whose purchase of the team from founder Jerry Richardson was unanimously approved by league owners on May 22, 2018. The club, which Forbes valued at approximately US$2.3 billion in 2018, is estimated at $4.1 billion by it in 2023.
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Chicago Bears
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Q205033
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The Chicago Bears are a professional American football team based in Chicago. The Bears compete in the National Football League (NFL) as a member of the National Football Conference (NFC) North division. They are one of two remaining franchises from the NFL founding in 1920, along with the Arizona Cardinals, which also began in Chicago. The Bears played home games at Wrigley Field on Chicago's North Side through the 1970 season; they have played since then at Soldier Field on the Near South Side, adjacent to Lake Michigan.
The franchise was founded in Decatur, Illinois, on September 20, 1919, became professional on September 17, 1920, and moved to Chicago in 1921. The Bears have won nine NFL Championships, eight prior to the AFL–NFL merger and one Super Bowl. They hold the NFL records for the most enshrinees in the Pro Football Hall of Fame and the most retired jersey numbers. The Bears' NFL championships and overall victories are second behind the Green Bay Packers, with whom they have a long-standing rivalry. The Bears reached their greatest modern period of success in the 1980s under head coach Mike Ditka, with whom they won Super Bowl XX in the 1985 season. The Bears appeared in their second Super Bowl during the 2006 season, which they lost to the Indianapolis Colts. Since 2006 the Bears have struggled to find regular success, winning their last playoff game in 2011 and last division title in 2018.
The team headquarters, Halas Hall, is in the Chicago suburb of Lake Forest, Illinois. The Bears practice at adjoining facilities there during the season, and began hosting training camp at Halas Hall in 2020 after major renovations.
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Cincinnati Bengals
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Q223511
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The Cincinnati Bengals are a professional American football team based in Cincinnati. The Bengals compete in the National Football League (NFL) as a member of the American Football Conference (AFC) North division. The team plays its home games at Paycor Stadium in downtown Cincinnati.
Former Cleveland Browns head coach Paul Brown began planning for the creation of the Bengals franchise in 1965, and Cincinnati's city council approved the construction of Riverfront Stadium in 1966. Finally, in 1967, the Bengals were founded when a group headed by Brown received franchise approval by the American Football League (AFL) on May 23, 1967, and they began play in the 1968 season. Brown was the Bengals' head coach from their inception to 1975.
After being dismissed as the Browns' head coach by Art Modell (who had purchased a majority interest in the team in 1961) in January 1963, Brown had shown interest in establishing another NFL franchise in Ohio and looked at both Cincinnati and Columbus. He ultimately chose the former when a deal between the city, Hamilton County, and Major League Baseball's Cincinnati Reds (who were seeking a replacement for the obsolete Crosley Field) was struck that resulted in an agreement to build a multipurpose stadium which could host both baseball and football games. Due to the impending merger of the AFL and the NFL, which was scheduled to take full effect in the 1970 season, Brown agreed to join the AFL as its 10th and final franchise. The Bengals, like the other former AFL teams, were assigned to the AFC following the merger. Cincinnati was also selected because, like their neighbors the Reds, they could draw from several large neighboring cities (Louisville and Lexington, Kentucky; Columbus, Dayton, and Springfield, Ohio) that are all no more than 110 miles (180 km) away from downtown Cincinnati, along with Indianapolis, until the Baltimore Colts relocated there prior to the 1984 NFL season.
After Paul Brown's death in 1991, controlling interest in the team was inherited by his son, Mike Brown. In 2011, Brown purchased shares of the team owned by the estate of co-founder Austin Knowlton and is now the majority owner of the Bengals franchise.
The Bengals won the AFC championship in 1981, 1988, and in 2021. After each of the 1981 and 1988 conference championships, they went on to lose to the San Francisco 49ers, in Super Bowls XVI and XXIII. The team struggled greatly in the 1990s and the early 2000s, during which time they were sometimes referred to disparagingly as "The Bungles," a term coined by Steelers broadcaster Myron Cope. Following the 1990 season, the team went 14 years without making the NFL playoffs or posting a winning record. The Bengals went through several head coaches in that period, and many of their top draft picks did not pan out.
The team's fortunes improved in the mid-2000s and into the mid-2010s, which saw them become more consistent postseason contenders, but they continued to struggle in the playoffs. The turning point for the Bengals was during the 2021 season, when they won their first playoff game in 31 years and advanced to the first of two consecutive AFC Championship games. In 2021, they defeated the Kansas City Chiefs 27–24 in overtime and advanced to Super Bowl LVI, their first appearance in the Super Bowl in 33 years, where they lost to the Los Angeles Rams 23–20. They advanced to the AFC Championship game again in 2022 but lost to the eventual Super Bowl champion Chiefs by a score of 23–20.
The team does not have an official general manager. However, Duke Tobin is the Bengals’ “de facto general manager” because he handles most personnel decisions. In a 2011 survey, Brown was rated as among the worst team owners in American professional sports.
In a Forbes article on the value of NFL teams as of August 2022, the Cincinnati Bengals were ranked last with a value of $3 billion.
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Cleveland Guardians
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Q642553
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The Cleveland Guardians are an American professional baseball team based in Cleveland. The Guardians compete in Major League Baseball (MLB) as a member club of the American League (AL) Central Division. Since 1994, the team has played its home games at Progressive Field (originally known as Jacobs Field after the team's then-owner). Since their establishment as a Major League franchise in 1901, the team has won 12 Central Division titles, six American League pennants, and two World Series championships (in 1920 and 1948). The team's World Series championship drought since 1948 is the longest active among all 30 current Major League teams. The team's name references the Guardians of Traffic, eight monolithic 1932 Art Deco sculptures by Henry Hering on the city's Hope Memorial Bridge, which is adjacent to Progressive Field. The team's mascot is named "Slider". The team's spring training facility is at Goodyear Ballpark in Goodyear, Arizona.
The franchise originated in 1896 as the Columbus Buckeyes (also known as the Columbus Senators), a minor league team based in Columbus, Ohio that played in the Western League. The team relocated to Grand Rapids, Michigan midseason in 1899, where they were known as the Grand Rapids Furniture Makers. In 1900, the franchise moved to Cleveland and was called the Cleveland Lakeshores. The Western League itself was renamed the American League prior to the 1900 season while continuing its minor league status. When the American League declared itself a major league in 1901, Cleveland was one of its eight charter franchises. Originally called the Cleveland Bluebirds or Blues, the team was also unofficially called the Cleveland Broncos in 1902. Beginning in 1903, the team was named the Cleveland Napoleons or Naps, after team captain and manager Nap Lajoie.
Lajoie left after the 1914 season, and club owner Charles Somers requested that baseball writers choose a new name. They chose the name Cleveland Indians. That name stuck and remained in use for more than a century. Common nicknames for the Indians were "the Tribe" and "the Wahoos", the latter referencing their longtime logo, Chief Wahoo. After the Indians name came under criticism as part of the Native American mascot controversy, the team adopted the current name (Guardians) following the 2021 season.
From August 24 to September 14, 2017, the team won 22 consecutive games, the longest winning streak in American League history and the second longest winning streak in Major League Baseball history.
As of the end of the 2024 season, the franchise's overall major league record is 9,852–9,369 (.513).
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Cape Town
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Q5465
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Cape Town is the legislative capital of South Africa. It is the country's oldest city and the seat of the Parliament of South Africa. Cape Town is the country's second-largest city, after Johannesburg, and the largest in the Western Cape. The city is part of the City of Cape Town metropolitan municipality.
The city is known for its harbour, its natural setting in the Cape Floristic Region, and for landmarks such as Table Mountain and Cape Point. In 2014, Cape Town was named the best place in the world to visit by The New York Times, and was similarly ranked number one by The Daily Telegraph in both 2016 and 2023.
Located on the shore of Table Bay, the City Bowl area of Cape Town is the oldest urban area in the Western Cape, with a significant cultural heritage. It was founded by the Dutch East India Company (VOC) as a supply station for Dutch ships sailing to East Africa, India, and the Far East. Jan van Riebeeck's arrival on 6 April 1652 established the VOC Cape Colony, the first permanent European settlement in South Africa.
Cape Town outgrew its original purpose as the first European outpost at the Castle of Good Hope, becoming the economic and cultural hub of the Cape Colony. Until the Witwatersrand Gold Rush and the development of Johannesburg, Cape Town was the largest city in southern Africa.
The metropolitan area has a long coastline on the Atlantic Ocean, which includes False Bay, and extends to the Hottentots Holland Mountains to the east. The Table Mountain National Park is within the city boundaries and there are several other nature reserves and marine-protected areas within, and adjacent to, the city, protecting the diverse terrestrial and marine natural environment.
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Chicago Cubs
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Q246782
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The Chicago Cubs are an American professional baseball team based in Chicago. The Cubs compete in Major League Baseball (MLB) as a member club of the National League (NL) Central Division. The club plays its home games at Wrigley Field, which is located on Chicago's North Side. They are one of two major league teams based in Chicago, alongside the American League (AL)’s Chicago White Sox. The Cubs, first known as the White Stockings, were founded in 1870 and are one of two remaining NL charter franchises that debuted in 1876. They have been known as the Chicago Cubs since 1903.
Throughout the club's history, the Cubs have played in a total of 11 World Series. The 1906 Cubs won 116 games, finishing 116–36 and posting a modern-era record winning percentage of .763, before losing the World Series to the Chicago White Sox ("The Hitless Wonders") by four games to two. The Cubs won back-to-back World Series championships in 1907 and 1908, becoming the first major league team to play in three consecutive World Series, and the first to win it twice. Most recently, the Cubs won the 2016 National League Championship Series and 2016 World Series, which ended a 71-year National League pennant drought and a 108-year World Series championship drought, both of which are record droughts in Major League Baseball. The 108-year drought was also the longest such occurrence in all major professional sports leagues in the United States and Canada. Since the start of divisional play in 1969, the Cubs have appeared in the postseason 11 times through the 2024 season.
The Cubs are known as "the North Siders", a reference to the location of Wrigley Field within the city of Chicago, and in contrast to the White Sox, whose home field (Rate Field) is located on the South Side.
The Cubs won the Laureus World Team of the Year in 2017.
Through 2024, the franchise has played the most games in MLB history, with an all-time regular season record of 11,327–10,767–161 (.513).
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Codec
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Q184748
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A codec is a computer hardware or software component that encodes or decodes a data stream or signal. Codec is a portmanteau of coder/decoder.
In electronic communications, an endec is a device that acts as both an encoder and a decoder on a signal or data stream, and hence is a type of codec. Endec is a portmanteau of encoder/decoder.
A coder or encoder encodes a data stream or a signal for transmission or storage, possibly in encrypted form, and the decoder function reverses the encoding for playback or editing. Codecs are used in videoconferencing, streaming media, and video editing applications.
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Cincinnati Reds
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Q826751
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The Cincinnati Reds are an American professional baseball team based in Cincinnati. The Reds compete in Major League Baseball (MLB) as a member club of the National League (NL) Central Division. They were a charter member of the American Association in 1881 before joining the NL in 1890.
The Reds played in the NL West division from 1969 to 1993, before joining the Central division in 1994. For several years in the 1970s, they were considered the most dominant team in baseball, most notably winning the 1975 and 1976 World Series; the team was colloquially known as the "Big Red Machine" during this time, and it included Hall of Fame members Johnny Bench, Joe Morgan, and Tony Pérez, as well as the controversial Pete Rose, the all-time hits leader in Major League Baseball. Overall, the Reds have won five World Series championships, nine NL pennants, one AA pennant and 10 division titles. The team plays its home games at Great American Ball Park, which opened in 2003. Bob Castellini has been the CEO of the Reds since 2006. From 1882 to 2024, the Reds' overall win–loss record is 10,934–10,766–139 (a .504 winning percentage).
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Columbia, Missouri
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Q59670
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Columbia is a city in Missouri, United States. It was founded in 1821 as the county seat of Boone County and had a population of 126,254 as recorded in the 2020 United States census, making it the fourth-most populous city in Missouri. Columbia is a Midwestern college town, home to the University of Missouri, a major research institution also known as MU or Mizzou. In addition to the university and surrounding Downtown Columbia are Stephens College and Columbia College, giving the city its educational focus and nearly 40,000 college students. It is the principal city of the Columbia metropolitan area, population 215,811, and the central city of the nine-county Columbia–Jefferson City–Moberly combined statistical area with 415,747 residents. The city is the fastest-growing municipality in Missouri, with a growth of almost 40% since 2000, and a population estimated at 130,000 in 2024. Columbia is among the most-educated cities in the United States with about half of citizens being college graduates and about a quarter holding advance degrees.
The city is built on the oak-forested hills and rolling prairies of Mid-Missouri, near the Missouri River, where the Ozark Mountains transition into plains and savanna. At the city's center is the Avenue of the Columns (8th Street), connecting Francis Quadrangle and Jesse Hall to the Boone County Courthouse and City Hall. Surrounding Columbia is a greenbelt including Rock Bridge Memorial State Park, Eagle Bluffs Conservation Area, the Mark Twain National Forest, Katy Trail State Park, Finger Lakes State Park, and the Big Muddy National Fish and Wildlife Refuge. Limestone bedrock forms bluffs and glades while rain dissolves the bedrock, creating karst (caves and springs) which water the Hinkson, Roche Perche, Flat Branch, and Bonne Femme creeks. Within city limits, there is an extensive city parks and trails system with a focus on non-motorized transportation, including the MKT Trail. The Columbia Agriculture Park is home to the nationally-regarded Columbia Farmers Market.
Originally an agricultural town, education and healthcare are now Columbia's primary economic concern, with secondary interests in the insurance, finance, and technology sectors. Companies founded in Columbia include: Paytient, Carfax, Shelter Insurance, Veterans United Home Loans, MFA Incorporated, MFA Oil, Slackers CDs and Games, MidwayUSA, EquipmentShare, and Scripps News. The University of Missouri Health Care system operates six hospitals in Columbia, several clinics, and the Thompson Center for Autism and Neurodevelopment. There is also the county-owned Boone Hospital Center, several smaller private hospitals, and the Harry S. Truman Memorial Veterans' Hospital, adjacent to University Hospital and MU School of Medicine. The University of Missouri nuclear reactor is the most-powerful research reactor in the United States and the sole supplier of important radioisotopes used in nuclear medicine.
Cultural institutions include the State Historical Society of Missouri, the Museum of Art and Archaeology, the Missouri Symphony, the North Village Arts District, The Blue Note, the Missouri Theatre, The Conservatory of the Performing Arts at Stephens College, the Boone County Historical Society, Columbia Public Library, Ragtag Cinema and the annual True/False Film Festival, an internationally-known documentary festival. The Missouri Tigers, the state's only major college athletic program, play football at Faurot Field and basketball at Mizzou Arena as members of the Southeastern Conference (SEC). The city has been known as the "Athens of Missouri" for its educational emphasis and classic beauty, but is more commonly called "CoMo".
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Charlton Athletic F.C.
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Q19462
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Charlton Athletic Football Club is a professional association football club based in Charlton, south-east London, England. The team compete in EFL League One, the third level of the English football league system.
Their home ground is The Valley, where the club has played since 1919. They played at The Mount in Catford during the 1923–24 season. They also played a combined seven years divided between firstly Selhurst Park, and secondly at the former 'Upton Park', (now the Boleyn Ground), between 1985 and 1992, due to both their financial problems and the local council's safety concerns. The club's traditional kit consists of red shirts, white shorts and red socks. Their most commonly used nickname is The Addicks. Charlton share local rivalries with fellow South London clubs Crystal Palace and Millwall.
The club was founded on 9 June 1905 and turned professional in 1920. They spent one season in the Kent League and one season in the Southern League, before being invited to join the newly-formed Football League Third Division South in 1921. They won the division in the 1928–29 season, and again in 1934–35 following relegation in 1933. Charlton were promoted out of the Second Division in 1935–36, and finished second in the First Division the next season. Having been beaten finalists in 1946, they lifted the FA Cup the following year with a 1–0 victory over Burnley. The departure of Jimmy Seed in 1956, manager for 23 years, saw the club relegated out of the top-flight the following year. Relegated again in 1972, Charlton were promoted from the Third Division in 1974–75, and again in 1980–81 following relegation the previous season.
Charlton recovered from administration to secure promotion back to the First Division in 1985–86, and went on to lose in the 1987 final of the Full Members' Cup, though they won the 1987 play-off final to retain their top-flight status. Having been relegated in 1990, Charlton won the 1998 play-off final to make their debut in the Premier League. Though they were relegated the next year, manager Alan Curbishley took them back up as champions in 1999–2000. Charlton spent seven successive years in the Premier League, before suffering two relegations in three years. They won League One with 101 points in 2011–12, though were relegated from the Championship in 2016, and again in 2020 after they won the 2019 League One play-off final.
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Cross-country skiing
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Q1805318
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Cross-country skiing is a form of skiing whereby skiers traverse snow-covered terrain without use of ski lifts or other assistance. Cross-country skiing is widely practiced as a sport and recreational activity; however, some still use it as a means of travel. Variants of cross-country skiing are adapted to a range of terrain which spans unimproved, sometimes mountainous terrain to groomed courses that are specifically designed for the sport.
Modern cross-country skiing is similar to the original form of skiing, from which all skiing disciplines evolved, including alpine skiing, ski jumping and Telemark skiing. Skiers propel themselves either by striding forward (classic style) or side-to-side in a skating motion (skate skiing), aided by arms pushing on ski poles against the snow. It is practised in regions with snow-covered landscapes, including Europe, Canada, Russia, the United States, Australia and New Zealand.
Competitive cross-country skiing is one of the Nordic skiing sports. Cross-country skiing and rifle marksmanship are the two components of biathlon. Ski orienteering is a form of cross-country skiing, which includes map navigation along snow trails and tracks.
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Central Asia
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Q27275
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Central Asia is a region of Asia consisting of Kazakhstan, Kyrgyzstan, Tajikistan, Turkmenistan, and Uzbekistan. The countries as a group are also colloquially referred to as the "-stans" as all have names ending with the Persian suffix "-stan" (meaning 'land') in both respective native languages and most other languages. The region is bounded by the Caspian Sea to the southwest, European Russia to the northwest, China and Mongolia to the east, Afghanistan and Iran to the south, and Siberia to the north.
In the pre-Islamic and early Islamic eras (c. 1000 and earlier) Central Asia was inhabited predominantly by Iranian peoples, populated by Eastern Iranian-speaking Bactrians, Sogdians, Chorasmians, and the semi-nomadic Scythians and Dahae. As the result of Turkic migration, Central Asia also became the homeland for the Kazakhs, Kyrgyzs, Tatars, Turkmens, Uyghurs, and Uzbeks; Turkic languages largely replaced the Iranian languages spoken in the area, with the exception of Tajikistan and areas where Tajik is spoken.
The Silk Road trade routes crossed through Central Asia, leading to the rise of prosperous trade cities. acting as a crossroads for the movement of people, goods, and ideas between Europe and the Far East. Most countries in Central Asia are still integral to parts of the world economy.
From the mid-19th century until near the end of the 20th century, Central Asia was colonised by the Russians, and incorporated into the Russian Empire, and later the Soviet Union, which led to Russians and other Slavs migrating into the area. Modern-day Central Asia is home to a large population of descendants of European settlers, who mostly live in Kazakhstan: 7 million Russians, 500,000 Ukrainians, and about 170,000 Germans. During the Stalinist period, the forced deportation of Koreans in the Soviet Union resulted in a population of over 300,000 Koreans in the region.
Central Asia has a population of about 72 million, in five countries: Kazakhstan (19 million), Kyrgyzstan (7 million), Tajikistan (10 million), Turkmenistan (6 million), and Uzbekistan (35 million).
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Cheerleading
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Q61391
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Cheerleading is an activity in which the participants (called cheerleaders) cheer for their team as a form of encouragement. It can range from chanting slogans to intense physical activity. It can be performed to motivate sports teams, to entertain the audience, or for competition. Cheerleading routines typically range anywhere from one to three minutes, and contain components of tumbling, dance, jumps, cheers, and stunting. Cheerleading originated in the United States, where it has become a tradition. It is less prevalent in the rest of the world, except via its association with American sports or organized cheerleading contests.
Modern cheerleading is very closely associated with American football and basketball. Sports such as association football (soccer), ice hockey, volleyball, baseball, and wrestling will sometimes sponsor cheerleading squads. The ICC Twenty20 Cricket World Cup in South Africa in 2007 was the first international cricket event to have cheerleaders. Some Brazilian association football (soccer) teams that plays in the Brazilian Serie A have cheerleading squads, such as Bahia, Fortaleza and Botafogo. In baseball, the Florida Marlins were the first Major League Baseball team to have a cheerleading team.
Cheerleading originated as an all-male activity in the United States, and is popular predominantly in America, with an estimated 3.85 million participants in 2017. The global presentation of cheerleading was led by the 1997 broadcast of ESPN's International cheerleading competition, and the worldwide release of the 2000 film Bring It On. The International Cheer Union (ICU) now claims 116 member nations with an estimated 7.5 million participants worldwide.
Around the end of the 2000s, the sport had gained traction outside of the United States in countries like Australia, Canada, Mexico, China, Colombia, Finland, France, Germany, Japan, the Netherlands, New Zealand, and the United Kingdom. However, the sport does not have the international popularity of other American sports, such as baseball or basketball, despite efforts being made to popularize the sport at an international level. In 2016, the IOC (International Olympic Committee) recognized the ICU (International Cheer Union) as part of the sports federations; in practice this means that the modality is considered a sport by the IOC, and in the future, depending on negotiations and international popularization, it could become part of the Olympic Games.
Scientific studies of cheerleading show that it carries the highest rate of catastrophic injuries to female athletes in sports, with most injuries associated with stunting, also known as pyramids. One 2011 study of American female athletes showed that cheerleading resulted in 65% of all catastrophic injuries in female sports.
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College football
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Q1109032
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College football is gridiron football that is played by teams of amateur student-athletes at universities and colleges. It was through collegiate competition that gridiron football first gained popularity in the United States.
Like gridiron football generally, college football is most popular in the United States and Canada. While no single governing body exists for college football in the United States, most schools, especially those at the highest levels of play, are members of the NCAA. In Canada, collegiate football competition is governed by U Sports for universities. The Canadian Collegiate Athletic Association (for colleges) governs soccer and other sports but not gridiron football. Other countries, such as Mexico, Japan and South Korea, also host college football leagues with modest levels of support.
Unlike most other major sports in North America, no official minor league farm organizations exist for American football or Canadian football. Therefore, college football is generally considered to be the second tier of American and Canadian football; ahead of high school competition, but below professional competition. In some parts of the United States, especially the South and Midwest, college football is more popular than professional football. For much of the 20th century, college football was generally considered to be more prestigious than professional football.
The overwhelming majority of professional football players in the NFL and other leagues previously played college football. The NFL draft each spring sees 224 players selected and offered a contract to play in the league, with the vast majority coming from the NCAA. Other professional leagues, such as the CFL and UFL, additionally hold their own drafts each year which also see primarily college players selected. Players who are not selected can still attempt to obtain a professional roster spot as an undrafted free agent. Despite these opportunities, only around 1.6% of NCAA college football players end up playing professionally in the NFL.
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Computer animation
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Q1401416
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Computer animation is the process used for digitally generating moving images. The more general term computer-generated imagery (CGI) encompasses both still images and moving images, while computer animation only refers to moving images. Modern computer animation usually uses 3D computer graphics.
Computer animation is a digital successor to stop motion and traditional animation. Instead of a physical model or illustration, a digital equivalent is manipulated frame-by-frame. Also, computer-generated animations allow a single graphic artist to produce such content without using actors, expensive set pieces, or props. To create the illusion of movement, an image is displayed on the computer monitor and repeatedly replaced by a new similar image but advanced slightly in time (usually at a rate of 24, 25, or 30 frames/second). This technique is identical to how the illusion of movement is achieved with television and motion pictures.
To trick the visual system into seeing a smoothly moving object, the pictures should be drawn at around 12 frames per second or faster (a frame is one complete image). With rates above 75 to 120 frames per second, no improvement in realism or smoothness is perceivable due to the way the eye and the brain both process images. At rates below 12 frames per second, most people can detect jerkiness associated with the drawing of new images that detracts from the illusion of realistic movement. Conventional hand-drawn cartoon animation often uses 15 frames per second in order to save on the number of drawings needed, but this is usually accepted because of the stylized nature of cartoons. To produce more realistic imagery, computer animation demands higher frame rates.
Films seen in theaters in the United States run at 24 frames per second, which is sufficient to create the appearance of continuous movement.
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Citizenship
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Q42138
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Citizenship is a membership and allegiance to a sovereign state.
Though citizenship is often conflated with nationality in today's English-speaking world, international law does not usually use the term citizenship to refer to nationality; these two notions are conceptually different dimensions of collective membership.
Generally citizenships have no expiration and allow persons to work, reside and vote in the polity, as well as identify with the polity, possibly acquiring a passport. Though through discriminatory laws, like disfranchisement and outright apartheid, citizens have been made second-class citizens. Historically, populations of states were mostly subjects, while citizenship was a particular status which originated in the rights of urban populations, like the rights of the male public of cities and republics, particularly ancient city-states, giving rise to a civitas and the social class of the burgher or bourgeoisie. Since then states have expanded the status of citizenship to most of their national people, while the extent of citizen rights remain contested.
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Centers for Disease Control and Prevention
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Q583725
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The Centers for Disease Control and Prevention (CDC) is the national public health agency of the United States. It is a United States federal agency under the Department of Health and Human Services (HHS), and is headquartered in Atlanta, Georgia. The CDC's current nominee for director is Susan Monarez. She became acting director on January 23, 2025, but stepped down on March 24, 2025 when nominated for the director position. On May 14, 2025, Robert F. Kennedy Jr. stated that lawyer Matthew Buzzelli is acting CDC director. However, the CDC web site does not state the acting director's name.
The agency's main goal is the protection of public health and safety through the control and prevention of disease, injury, and disability in the US and worldwide. The CDC focuses national attention on developing and applying disease control and prevention. It especially focuses its attention on infectious disease, food borne pathogens, environmental health, occupational safety and health, health promotion, injury prevention, and educational activities designed to improve the health of United States citizens. The CDC also conducts research and provides information on non-infectious diseases, such as obesity and diabetes, and is a founding member of the International Association of National Public Health Institutes.
As part of the announced 2025 HHS reorganization, CDC is planned to be reoriented towards infectious disease programs. It is planned to absorb the Administration for Strategic Preparedness and Response, while the National Institute for Occupational Safety and Health is planned to move into the new Administration for a Healthy America.
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Cavalry
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Q47315
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Historically, cavalry (from the French word cavalerie, itself derived from cheval meaning "horse") are groups of soldiers or warriors who fight mounted on horseback. Until the 20th century, cavalry were the most mobile of the combat arms, operating as light cavalry in the roles of reconnaissance, screening, and skirmishing, or as heavy cavalry for decisive economy of force and shock attacks. An individual soldier in the cavalry is known by a number of designations depending on era and tactics, such as a cavalryman, horseman, trooper, cataphract, knight, drabant, hussar, uhlan, mamluk, cuirassier, lancer, dragoon, samurai or horse archer. The designation of cavalry was not usually given to any military forces that used other animals or platforms for mounts, such as chariots, camels or elephants. Infantry who moved on horseback, but dismounted to fight on foot, were known in the early 17th to the early 18th century as dragoons, a class of mounted infantry which in most armies later evolved into standard cavalry while retaining their historic designation.
Cavalry had the advantage of improved mobility, and a soldier fighting from horseback also had the advantages of greater height, speed, and inertial mass over an opponent on foot. Another element of horse mounted warfare is the psychological impact a mounted soldier can inflict on an opponent.
The speed, mobility, and shock value of cavalry was greatly valued and exploited in warfare during the Ancient and Medieval eras. Some hosts were mostly cavalry, particularly in nomadic societies of Asia, notably the Huns of Attila and the later Mongol armies. In Europe, cavalry became increasingly armoured (heavy), and eventually evolving into the mounted knights of the medieval period. During the 17th century, cavalry in Europe discarded most of its armor, which was ineffective against the muskets and cannons that were coming into common use, and by the mid-18th century armor had mainly fallen into obsolescence, although some regiments retained a small thickened cuirass that offered protection against lances, sabres, and bayonets; including some protection against a shot from distance.
In the interwar period many cavalry units were converted into motorized infantry and mechanized infantry units, or reformed as tank troops. The cavalry tank or cruiser tank was one designed with a speed and purpose beyond that of infantry tanks and would subsequently develop into the main battle tank. Nonetheless, some cavalry still served during World War II (notably in the Red Army, the Mongolian People's Army, the Royal Italian Army, the Royal Hungarian Army, the Romanian Army, the Polish Land Forces, and German light reconnaissance units within the Waffen SS).
Most cavalry units that are horse-mounted in modern armies serve in purely ceremonial roles, or as mounted infantry in difficult terrain such as mountains or heavily forested areas. Modern usage of the term generally refers to units performing the role of reconnaissance, surveillance, and target acquisition (analogous to historical light cavalry) or main battle tank units (analogous to historical heavy cavalry).
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Catalonia
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Q5705
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Catalonia is an autonomous community of Spain, designated as a nationality by its Statute of Autonomy. Most of its territory (except the Val d'Aran) is situated on the northeast of the Iberian Peninsula, to the south of the Pyrenees mountain range. Catalonia is administratively divided into four provinces or eight vegueries (regions), which are in turn divided into 43 comarques. The capital and largest city, Barcelona, is the second-most populous municipality in Spain and the fifth-most populous urban area in the European Union.
Modern-day Catalonia comprises most of the medieval and early modern Principality of Catalonia, with the remainder of the northern area now part of France's Pyrénées-Orientales. It is bordered by France (Occitanie) and Andorra to the north, the Mediterranean Sea to the east, and the Spanish autonomous communities of Aragon to the west and Valencia to the south. In addition to its approximately 580 km of coastline, Catalonia also has major high landforms such as the Pyrenees and the Pre-Pyrenees, the Transversal Range (Serralada Transversal) or the Central Depression. The official languages are Catalan, Spanish, and the Aranese dialect of Occitan.
In the 10th century, the County of Barcelona and the other neighboring counties became independent from West Francia. In 1137, Barcelona and the Kingdom of Aragon were united by marriage, resulting in a composite monarchy, the Crown of Aragon. Within the Crown, the Catalan counties merged in to a state, the Principality of Catalonia, with its own distinct institutional system, such as Courts, Generalitat and constitutions, being the base and promoter for the Crown's Mediterranean trade and expansionism. In the later Middle Ages, Catalan literature flourished. In 1516, Charles V became monarch of both the crowns of Aragon and Castile, retaining their previous distinct institutions and legislation. Growing tensions led to the revolt of the Principality of Catalonia (1640–1652), briefly becoming a republic under French protection. By the Treaty of the Pyrenees (1659), the northern parts of Catalonia were ceded to France. During the War of the Spanish Succession (1701–1714), the states of the Crown of Aragon sided against the Bourbon Philip V of Spain, but following Catalan capitulation on 11 September 1714 he imposed a unifying administration across Spain, enacting the Nueva Planta decrees which ended Catalonia's separate status, suppressing its institutions and legal system. Catalan as a language of government and literature was eclipsed by Spanish.
In the 19th century, Napoleonic and Carlist Wars affected Catalonia. In the second third of the century, it experienced industrialisation, as well as a cultural renaissance coupled with incipient nationalism and several workers' movements. The Second Spanish Republic (1931–1939) granted self-governance to Catalonia, restoring the Generalitat as its government. After the Spanish Civil War (1936–1939), the Francoist dictatorship enacted repressive measures, abolishing self-government and banning again the official use of the Catalan language. After a harsh autarky, from the late 1950s Catalonia saw rapid economic growth, drawing many workers from across Spain and making it one of Europe's largest industrial and touristic areas. During the Spanish transition to democracy (1975–1982), the Generalitat and Catalonia's self-government were reestablished, remaining one of the most economically dynamic communities in Spain.
In the 2010s, there was growing support for Catalan independence. On 27 October 2017, the Catalan Parliament unilaterally declared independence following a referendum that was deemed unconstitutional by the Spanish state. The Spanish Senate voted in favour of enforcing direct rule by removing the Catalan government and calling a snap regional election. The Spanish Supreme Court imprisoned seven former ministers of the Catalan government on charges of rebellion and misuse of public funds, while several others—including then-President Carles Puigdemont—fled to other European countries. Those in prison were pardoned by the Spanish government in 2021.
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Carl Sagan
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Q410
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Carl Edward Sagan (; SAY-gən; November 9, 1934 – December 20, 1996) was an American astronomer, planetary scientist and science communicator. His best known scientific contribution is his research on the possibility of extraterrestrial life, including experimental demonstration of the production of amino acids from basic chemicals by exposure to light. He assembled the first physical messages sent into space, the Pioneer plaque and the Voyager Golden Record, which were universal messages that could potentially be understood by any extraterrestrial intelligence that might find them. He argued in favor of the hypothesis, which has since been accepted, that the high surface temperatures of Venus are the result of the greenhouse effect.
Initially an assistant professor at Harvard, Sagan later moved to Cornell University, where he spent most of his career. He published more than 600 scientific papers and articles and was author, co-author or editor of more than 20 books. He wrote many popular science books, such as The Dragons of Eden, Broca's Brain, Pale Blue Dot and The Demon-Haunted World. He also co-wrote and narrated the award-winning 1980 television series Cosmos: A Personal Voyage, which became the most widely watched series in the history of American public television: Cosmos has been seen by at least 500 million people in 60 countries. A book, also called Cosmos, was published to accompany the series. Sagan also wrote a science-fiction novel, published in 1985, called Contact, which became the basis for the 1997 film Contact. His papers, comprising 595,000 items, are archived in the Library of Congress.
Sagan was a popular public advocate of skeptical scientific inquiry and the scientific method; he pioneered the field of exobiology and promoted the search for extraterrestrial intelligence (SETI). He spent most of his career as a professor of astronomy at Cornell University, where he directed the Laboratory for Planetary Studies. Sagan and his works received numerous awards and honors, including the NASA Distinguished Public Service Medal, the National Academy of Sciences Public Welfare Medal, the Pulitzer Prize for General Nonfiction (for his book The Dragons of Eden), and (for Cosmos: A Personal Voyage) two Emmy Awards, the Peabody Award, and the Hugo Award. He married three times and had five children. After developing myelodysplasia, Sagan died of pneumonia at the age of 62 on December 20, 1996.
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Coronation Street
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Q945030
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Coronation Street (colloquially referred to as Corrie) is a British television soap opera created by Granada Television and shown on ITV since 9 December 1960. The programme centres on a cobbled, terraced street in the fictional town of Weatherfield in Greater Manchester. The location was itself based on Salford, the hometown of the show's first screenwriter and creator, Tony Warren.
Originally broadcast twice weekly, Coronation Street increased its runtime in later years, currently airing three 60-minute episodes per week. Warren developed the concept for the series, which was initially rejected by Granada's founder Sidney Bernstein. Producer Harry Elton convinced Bernstein to commission 13 pilot episodes. The show has since become a significant part of British culture and underpinned the success of its producing Granada franchise.
Currently produced by ITV Studios, the successor to Granada, the series is filmed at MediaCityUK and broadcast across all ITV regions, as well as internationally. In 2010, Coronation Street was recognised by Guinness World Records as the world's longest-running television soap opera upon its 50th anniversary.
Coronation Street was originally influenced by kitchen-sink realism and is known for portraying a working-class community with a blend of humour and strong, relatable characters. As of 2025, it averages approximately four million viewers per episode. The series aired its 10,000th episode on 7 February 2020 and marked its 60th anniversary later that year.
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Caffeine
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Q60235
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Caffeine is a central nervous system (CNS) stimulant of the methylxanthine class and is the most commonly consumed psychoactive substance globally. It is mainly used for its eugeroic (wakefulness promoting), ergogenic (physical performance-enhancing), or nootropic (cognitive-enhancing) properties. Caffeine acts by blocking the binding of adenosine at a number of adenosine receptor types, inhibiting the centrally depressant effects of adenosine and enhancing the release of acetylcholine. Caffeine has a three-dimensional structure similar to that of adenosine, which allows it to bind and block its receptors. Caffeine also increases cyclic AMP levels through nonselective inhibition of phosphodiesterase, increases calcium release from intracellular stores, and antagonizes GABA receptors, although these mechanisms typically occur at concentrations beyond usual human consumption.
Caffeine is a bitter, white crystalline purine, a methylxanthine alkaloid, and is chemically related to the adenine and guanine bases of deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). It is found in the seeds, fruits, nuts, or leaves of a number of plants native to Africa, East Asia and South America and helps to protect them against herbivores and from competition by preventing the germination of nearby seeds, as well as encouraging consumption by select animals such as honey bees. The most common sources of caffeine are the tea leaves of the Camellia sinensis plant, and the coffee bean, the seed of the Coffea plant. People may drink beverages containing caffeine to relieve or prevent drowsiness and to improve cognitive performance. To make these drinks, caffeine is extracted by steeping the plant product in water, a process called infusion. Caffeine-containing drinks, such as tea, coffee, and cola, are consumed globally in high volumes. In 2020, almost 10 million tonnes of coffee beans were consumed globally. Caffeine is the world's most widely consumed psychoactive drug. Unlike most other psychoactive substances, caffeine remains largely unregulated and legal in nearly all parts of the world. Caffeine is also an outlier as its use is seen as socially acceptable in most cultures with it even being encouraged.
Caffeine has both positive and negative health effects. It can treat and prevent the premature infant breathing disorders bronchopulmonary dysplasia of prematurity and apnea of prematurity. Caffeine citrate is on the WHO Model List of Essential Medicines. It may confer a modest protective effect against some diseases, including Parkinson's disease. Some people experience sleep disruption or anxiety if they consume caffeine, but others show little disturbance. Evidence of a risk during pregnancy is equivocal; some authorities recommend that pregnant women limit caffeine to the equivalent of two cups of coffee per day or less. Caffeine can produce a mild form of drug dependence – associated with withdrawal symptoms such as sleepiness, headache, and irritability – when an individual stops using caffeine after repeated daily intake. Tolerance to the autonomic effects of increased blood pressure and heart rate, and increased urine output, develops with chronic use (i.e., these symptoms become less pronounced or do not occur following consistent use).
Caffeine is classified by the U.S. Food and Drug Administration (FDA) as generally recognized as safe. Toxic doses, over 10 grams per day for an adult, are much higher than the typical dose of under 500 milligrams per day. The European Food Safety Authority reported that up to 400 mg of caffeine per day (around 5.7 mg/kg of body mass per day) does not raise safety concerns for non-pregnant adults, while intakes up to 200 mg per day for pregnant and lactating women do not raise safety concerns for the fetus or the breast-fed infants. A cup of coffee contains 80–175 mg of caffeine, depending on what "bean" (seed) is used, how it is roasted, and how it is prepared (e.g., drip, percolation, or espresso). Thus it requires roughly 50–100 ordinary cups of coffee to reach the toxic dose. However, pure powdered caffeine, which is available as a dietary supplement, can be lethal in tablespoon-sized amounts.
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Chrysler
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Q181114
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FCA US, LLC, doing business as Stellantis North America and known historically as Chrysler ( KRY-slər), is one of the "Big Three" automobile manufacturers in the United States, headquartered in Auburn Hills, Michigan. It is the American subsidiary of the multinational automotive company Stellantis. Stellantis North America sells vehicles worldwide under the Chrysler, Dodge, Jeep, and Ram Trucks nameplates. It also includes Mopar, its automotive parts and accessories division, and SRT, its performance automobile division. The division also distributes Alfa Romeo, Fiat, and Maserati vehicles in North America.
The original Chrysler Corporation was founded in 1925 by Walter Chrysler from the remains of the Maxwell Motor Company. In 1998, it merged with Daimler-Benz, which renamed itself DaimlerChrysler but in 2007 sold off its Chrysler stake. The company operated as Chrysler LLC through 2009, then as Chrysler Group LLC. In 2014, it was acquired by Fiat S.p.A.; it subsequently operated as a subsidiary of the new Fiat Chrysler Automobiles ("FCA"), then as a subsidiary of Stellantis, the company formed from the 2021 merger of FCA and PSA Group (Peugeot Société Anonyme).
After founding the company, Walter Chrysler used the General Motors brand diversification and hierarchy strategy that he had become familiar with when he worked in the Buick division at General Motors. He then acquired Fargo Trucks and the Dodge Brothers Company, and created the Plymouth and DeSoto brands in 1928. Facing postwar declines in market share, productivity, and profitability, as GM and Ford were growing, Chrysler borrowed $250 million in 1954 from Prudential Insurance to pay for expansion and updated car designs.
Chrysler expanded into Europe by taking control of French, British, and Spanish auto companies in the 1960s; Chrysler Europe was sold in 1978 to PSA Peugeot Citroën for a nominal $1. The company struggled to adapt to changing markets, increased U.S. import competition, and safety and environmental regulation in the 1970s. It began an engineering partnership with Mitsubishi Motors, and began selling Mitsubishi vehicles branded as Dodge and Plymouth in North America. On the verge of bankruptcy in the late 1970s, it was saved by $1.5 billion in loan guarantees from the U.S. government. New CEO Lee Iacocca was credited with returning the company to profitability in the 1980s. In 1985, Diamond-Star Motors was created, further expanding the Chrysler-Mitsubishi relationship. In 1987, Chrysler acquired American Motors Corporation (AMC), which brought the profitable Jeep, as well as the newly formed Eagle, brands under the Chrysler umbrella. In 1998, Chrysler merged with German automaker Daimler-Benz to form DaimlerChrysler AG; the merger proved contentious with investors. As a result, Chrysler was sold to Cerberus Capital Management and renamed Chrysler LLC in 2007.
Like the other Big Three automobile manufacturers, Chrysler was impacted by the automotive industry crisis of 2008–2010. The company remained in business through a combination of negotiations with creditors, filing for Chapter 11 bankruptcy reorganization on April 30, 2009, and participating in a bailout from the U.S. government through the Troubled Asset Relief Program. On June 10, 2009, Chrysler emerged from the bankruptcy proceedings with the United Auto Workers pension fund, Fiat S.p.A., and the U.S. and Canadian governments as principal owners. The bankruptcy resulted in Chrysler defaulting on over $4 billion in debts. In May 2011, Chrysler finished repaying its obligations to the U.S. government five years early, although the cost to the American taxpayer was $1.3 billion.
Over the next few years, Fiat S.p.A. gradually acquired the other parties' shares. In January 2014, Fiat acquired the rest of Chrysler from the United Auto Workers retiree health trust, making Chrysler Group a subsidiary of Fiat S.p.A. In May 2014, Fiat Chrysler Automobiles was established by merging Fiat S.p.A. into the company. Chrysler Group LLC remained a subsidiary until December 15, 2014, when it was renamed FCA US LLC, to reflect the Fiat-Chrysler merger.
As a result of the merger between FCA and PSA, on 17 January 2021 it became a subsidiary of the Stellantis Group.
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City of London
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Q23311
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The City of London, also known as the City, is a ceremonial county and local government district with city status in England. It is the historic centre of London, however it forms only a small part of the larger Greater London metropolis. It forms part of the administrative area of Greater London, but not the ceremonial county.
The City of London had a population of 8,583 at the 2021 census, however over 500,000 people were employed in the area as of 2019. It has an area of 1.12 sq mi (716.80 acres; 2.90 km2), the source of the nickname the Square Mile. The City is a unique local authority area governed by the City of London Corporation, which is led by the Lord Mayor of the City of London.
Together with Canary Wharf and the West End, the City of London forms the primary central business district of London, which is one of the leading financial centres of the world. The Bank of England and the London Stock Exchange are both based in the City. The insurance industry also has a major presence in the area, and the presence of the Inns of Court on the City's western boundary has made it a centre for the legal profession.
The present City of London constituted the majority of London from its settlement by the Romans in the 1st century AD to the Middle Ages. It contains several historic sites, including St Paul's Cathedral, Royal Exchange, Mansion House, Old Bailey, and Smithfield Market.
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Chicago
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Q1297
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Chicago is the most populous city in the U.S. state of Illinois and in the Midwestern United States. With a population of 2,746,388, as of the 2020 census, it is the third-most populous city in the United States after New York City and Los Angeles. As the seat of Cook County, the second-most populous county in the U.S., Chicago is the center of the Chicago metropolitan area, often colloquially called "Chicagoland" and home to 9.6 million residents.
Located on the shore of Lake Michigan, Chicago was incorporated as a city in 1837 near a portage between the Great Lakes and the Mississippi River watershed. It grew rapidly in the mid-19th century. In 1871, the Great Chicago Fire destroyed several square miles and left more than 100,000 homeless, but Chicago's population continued to grow. Chicago made noted contributions to urban planning and architecture, such as the Chicago School, the development of the City Beautiful movement, and the steel-framed skyscraper.
Chicago is an international hub for finance, culture, commerce, industry, education, technology, telecommunications, and transportation. It has the largest and most diverse finance derivatives market in the world, generating 20% of all volume in commodities and financial futures alone. O'Hare International Airport is routinely ranked among the world's top ten busiest airports by passenger traffic, and the region is also the nation's railroad hub. The Chicago area has one of the highest gross domestic products (GDP) of any urban region in the world, generating $689 billion in 2018. Chicago's economy is diverse, with no single industry employing more than 14% of the workforce.
Chicago is a major destination for tourism, with 55 million visitors in 2024 to its cultural institutions, Lake Michigan beaches, restaurants, and more. Chicago's culture has contributed much to the visual arts, literature, film, theater, comedy (especially improvisational comedy), food, dance, and music (particularly jazz, blues, soul, hip-hop, gospel, and electronic dance music, including house music). Chicago is home to the Chicago Symphony Orchestra and the Lyric Opera of Chicago, while the Art Institute of Chicago provides an influential visual arts museum and art school. The Chicago area also hosts the University of Chicago, Northwestern University, and the University of Illinois Chicago, among other institutions of learning. Professional sports in Chicago include all major professional leagues, including two Major League Baseball teams. The city also hosts the Chicago Marathon, one of the World Marathon Majors.
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Census
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Q39825
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A census (from Latin censere, 'to assess') is the procedure of systematically acquiring, recording, and calculating population information about the members of a given population, usually displayed in the form of statistics. This term is used mostly in connection with national population and housing censuses; other common censuses include censuses of agriculture, traditional culture, business, supplies, and traffic censuses. The United Nations (UN) defines the essential features of population and housing censuses as "individual enumeration, universality within a defined territory, simultaneity and defined periodicity", and recommends that population censuses be taken at least every ten years. UN recommendations also cover census topics to be collected, official definitions, classifications, and other useful information to coordinate international practices.
The UN's Food and Agriculture Organization (FAO), in turn, defines the census of agriculture as "a statistical operation for collecting, processing and disseminating data on the structure of agriculture, covering the whole or a significant part of a country." "In a census of agriculture, data are collected at the holding level."
The word is of Latin origin: during the Roman Republic, the census was a list of all adult males fit for military service. The modern census is essential to international comparisons of any type of statistics, and censuses collect data on many attributes of a population, not just the number of individuals. Censuses typically began as the only method of collecting national demographic data and are now part of a larger system of different surveys. Although population estimates remain an important function of a census, including exactly the geographic distribution of the population or the agricultural population, statistics can be produced about combinations of attributes, e.g., education by age and sex in different regions. Current administrative data systems allow for other approaches to enumeration with the same level of detail but raise concerns about privacy and the possibility of biasing estimates.
A census can be contrasted with sampling in which information is obtained only from a subset of a population; typically, main population estimates are updated by such intercensal estimates. Modern census data are commonly used for research, business marketing, and planning, and as a baseline for designing sample surveys by providing a sampling frame such as an address register. Census counts are necessary to adjust samples to be representative of a population by weighting them as is common in opinion polling. Similarly, stratification requires knowledge of the relative sizes of different population strata, which can be derived from census enumerations. In some countries, the census provides the official counts used to apportion the number of elected representatives to regions (sometimes controversially – e.g., Utah v. Evans). In many cases, a carefully chosen random sample can provide more accurate information than attempts to get a population census.
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Colony
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Q133156
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A colony is a territory subject to a form of foreign rule, which rules the territory and its indigenous peoples separated from the foreign rulers, the colonizer, and their metropole (or "mother country"). This separated rule was often organized into colonial empires, with their metropoles at their centers, making colonies neither annexed or even integrated territories, nor client states. Particularly new imperialism and its colonialism advanced this separated rule and its lasting coloniality. Colonies were most often set up and colonized for exploitation and possibly settlement by colonists.
The term colony originates from the ancient Roman colonia, a type of Roman settlement. Derived from colonus (farmer, cultivator, planter, or settler), it carries with it the sense of 'farm' and 'landed estate'.
Furthermore, the term was used to refer to the older Greek apoikia (Ancient Greek: ἀποικία, lit. 'home away from home'), which were overseas settlements by ancient Greek city-states. The city that founded such a settlement became known as its metropolis ("mother-city"). Since early-modern times, historians, administrators, and political scientists have generally used the term "colony" to refer mainly to the many different overseas territories of particularly European states between the 15th and 20th centuries CE, with colonialism and decolonization as corresponding phenomena.
While colonies often developed from trading outposts or territorial claims, such areas do not need to be a product of colonization, nor become colonially organized territories. Territories furthermore do not need to have been militarily conquered and occupied to come under colonial rule and to be considered de facto colonies, instead neocolonial exploitation of dependency or imperialist use of power to intervene to force policy, might make a territory be considered a colony, which broadens the concept, including indirect rule or puppet states (contrasted by more independent types of client states such as vassal states). Subsequently, some historians have used the term informal colony to refer to a country under a de facto control of another state. Though the broadening of the concept is often contentious.
Contemporarily colonies are identified and organized as not sufficiently self-governed dependent territories. Other past colonies have become either sufficiently incorporated and self-governed, or independent, with some to a varying degree dominated by remaining colonial settler societies or neocolonialism.
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Chromatin
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Q180951
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Chromatin is a complex of DNA and protein found in eukaryotic cells. The primary function is to package long DNA molecules into more compact, denser structures. This prevents the strands from becoming tangled and also plays important roles in reinforcing the DNA during cell division, preventing DNA damage, and regulating gene expression and DNA replication. During mitosis and meiosis, chromatin facilitates proper segregation of the chromosomes in anaphase; the characteristic shapes of chromosomes visible during this stage are the result of DNA being coiled into highly condensed chromatin.
The primary protein components of chromatin are histones. An octamer of two sets of four histone cores (Histone H2A, Histone H2B, Histone H3, and Histone H4) bind to DNA and function as "anchors" around which the strands are wound. In general, there are three levels of chromatin organization:
DNA wraps around histone proteins, forming nucleosomes and the so-called beads on a string structure (euchromatin).
Multiple histones wrap into a 30-nanometer fiber consisting of nucleosome arrays in their most compact form (heterochromatin).
Higher-level DNA supercoiling of the 30 nm fiber produces the metaphase chromosome (during mitosis and meiosis).
Many organisms, however, do not follow this organization scheme. For example, spermatozoa and avian red blood cells have more tightly packed chromatin than most eukaryotic cells, and trypanosomatid protozoa do not condense their chromatin into visible chromosomes at all. Prokaryotic cells have entirely different structures for organizing their DNA (the prokaryotic chromosome equivalent is called a genophore and is localized within the nucleoid region).
The overall structure of the chromatin network further depends on the stage of the cell cycle. During interphase, the chromatin is structurally loose to allow access to RNA and DNA polymerases that transcribe and replicate the DNA. The local structure of chromatin during interphase depends on the specific genes present in the DNA. Regions of DNA containing genes which are actively transcribed ("turned on") are less tightly compacted and closely associated with RNA polymerases in a structure known as euchromatin, while regions containing inactive genes ("turned off") are generally more condensed and associated with structural proteins in heterochromatin. Epigenetic modification of the structural proteins in chromatin via methylation and acetylation also alters local chromatin structure and therefore gene expression. There is limited understanding of chromatin structure and it is active area of research in molecular biology.
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Campus
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Q209465
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A campus traditionally refers to the land and buildings of a college or university. This will often include libraries, lecture halls, student centers and, for residential universities, residence halls and dining halls.
By extension, a corporate campus is a collection of buildings and grounds that belong to a company, particularly in the technology sector. Examples include Bell Labs, the Googleplex and Apple Park.
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Canadian football
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Q248534
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Canadian football, or simply football, is a sport in Canada in which two teams of 12 players each compete on a field 110 yards (101 m) long and 65 yards (59 m) wide, attempting to advance a pointed oval-shaped ball into the opposing team's end zone.
Canadian and American football have shared origins and are closely related, but have some major differences. Canadian football is played with three downs, goalposts in the front of the endzone, and twelve players on each side. Comparatively, American football has four downs, goalposts in the back of the endzone, and eleven players on each side. Canadian football is also played on a bigger field.
Rugby football, from which Canadian football developed, was first recorded in Canada in the early 1860s, taken there by British immigrants, possibly in 1824. Both the Canadian Football League (CFL), the sport's top professional league, and Football Canada, the governing body for amateur play, trace their roots to 1880 and the founding of the Canadian Rugby Football Union.
The CFL is the most popular and only major professional Canadian football league. Its championship game, the Grey Cup, is one of Canada's biggest sporting events, attracting a large television audience.
Canadian football is also played at high school, junior, collegiate, and semi-professional levels: the Canadian Junior Football League and Quebec Junior Football League are for players aged 18–22,
post-secondary institutions compete in U Sports football for the Vanier Cup, and seniors in the Alberta Football League. The Canadian Football Hall of Fame is in Hamilton, Ontario.
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Customer relationship management
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Q485643
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Customer relationship management (CRM) is a strategic process that organizations use to manage, analyze, and improve their interactions with customers. By leveraging data-driven insights, CRM helps businesses optimize communication, enhance customer satisfaction, and drive sustainable growth.
CRM systems compile data from a range of different communication channels, including a company's website, telephone (which many services come with a softphone), email, live chat, marketing materials and more recently, social media. They allow businesses to learn more about their target audiences and how to better cater to their needs, thus retaining customers and driving sales growth. CRM may be used with past, present or potential customers. The concepts, procedures, and rules that a corporation follows when communicating with its consumers are referred to as CRM. This complete connection covers direct contact with customers, such as sales and service-related operations, forecasting, and the analysis of consumer patterns and behaviours, from the perspective of the company.
The global customer relationship management market size is projected to grow from $101.41 billion in 2024 to $262.74 billion by 2032, at a CAGR of 12.6%
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Confederate States of America
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Q81931
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The Confederate States of America (CSA), commonly referred to as the Confederate States (C.S.), the Confederacy, or the South, was an unrecognized breakaway republic in the Southern United States from 1861 to 1865. It comprised eleven U.S. states that declared secession: South Carolina, Mississippi, Florida, Alabama, Georgia, Louisiana, Texas, Virginia, Arkansas, Tennessee, and North Carolina. These states fought against the United States during the American Civil War.
With Abraham Lincoln's election as President of the United States in 1860, eleven southern states believed their slavery-dependent plantation economies were threatened, and began to secede from the United States. The Confederacy was formed on February 8, 1861, by South Carolina, Mississippi, Florida, Alabama, Georgia, Louisiana, and Texas. They adopted a new constitution establishing a confederation government of "sovereign and independent states". The federal government in Washington D.C. and states under its control were known as the Union.
The Civil War began in April 1861, when South Carolina's militia attacked Fort Sumter. Four slave states of the Upper South—Virginia, Arkansas, Tennessee, and North Carolina—then seceded and joined the Confederacy. In February 1862, Confederate States Army leaders installed a centralized federal government in Richmond, Virginia, and enacted the first Confederate draft on April 16, 1862. By 1865, the Confederacy's federal government dissolved into chaos, and the Confederate States Congress adjourned, effectively ceasing to exist as a legislative body on March 18. After four years of heavy fighting, most Confederate land and naval forces either surrendered or otherwise ceased hostilities by May 1865. The most significant capitulation was Confederate general Robert E. Lee's surrender on April 9, after which any doubt about the war's outcome or the Confederacy's survival was extinguished. Confederate President Davis's administration declared the Confederacy dissolved on May 5.
After the war, during the Reconstruction era, the Confederate states were readmitted to Congress after each ratified the 13th Amendment to the U.S. Constitution, which outlawed slavery, "except as a punishment for crime". Lost Cause mythology, an idealized view of the Confederacy valiantly fighting for a just cause, emerged in the decades after the war among former Confederate generals and politicians, and in organizations such as the United Daughters of the Confederacy and the Sons of Confederate Veterans. Intense periods of Lost Cause activity developed around the turn of the 20th century and during the civil rights movement of the 1950s and 60s in reaction to growing support for racial equality. Advocates sought to ensure future generations of Southern whites would continue to support white supremacist policies such as the Jim Crow laws through activities such as building Confederate monuments and influencing the authors of textbooks. The modern display of the Confederate battle flag primarily started during the 1948 presidential election, when it was used by the pro-segregationist and white supremacist Dixiecrat Party.
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Cruiser
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Q104843
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A cruiser is a type of warship. Modern cruisers are generally the largest ships in a fleet after aircraft carriers and amphibious assault ships, and can usually perform several operational roles from search-and-destroy to ocean escort to sea denial.
The term "cruiser", which has been in use for several hundred years, has changed its meaning over time. During the Age of Sail, the term cruising referred to certain kinds of missions—independent scouting, commerce protection, or raiding—usually fulfilled by frigates or sloops-of-war, which functioned as the cruising warships of a fleet.
In the middle of the 19th century, cruiser came to be a classification of the ships intended for cruising distant waters, for commerce raiding, and for scouting for the battle fleet. Cruisers came in a wide variety of sizes, from the medium-sized protected cruiser to large armored cruisers that were nearly as big (although not as powerful or as well-armored) as a pre-dreadnought battleship. With the advent of the dreadnought battleship before World War I, the armored cruiser evolved into a vessel of similar scale known as the battlecruiser. The very large battlecruisers of the World War I era that succeeded armored cruisers were now classified, along with dreadnought battleships, as capital ships.
By the early 20th century, after World War I, the direct successors to protected cruisers could be placed on a consistent scale of warship size, smaller than a battleship but larger than a destroyer. In 1922, the Washington Naval Treaty placed a formal limit on these cruisers, which were defined as warships of up to 10,000 tons displacement carrying guns no larger than 8 inches in calibre; whilst the 1930 London Naval Treaty created a divide of two cruiser types, heavy cruisers having 6.1 inches to 8 inch guns, while those with guns of 6.1 inches or less were light cruisers. Each type were limited in total and individual tonnage which shaped cruiser design until the collapse of the treaty system just prior to the start of World War II. Some variations on the Treaty cruiser design included the German Deutschland-class "pocket battleships", which had heavier armament at the expense of speed compared to standard heavy cruisers, and the American Alaska class, which was a scaled-up heavy cruiser design designated as a "cruiser-killer".
In the later 20th century, the obsolescence of the battleship left the cruiser as the largest and most powerful surface combatant ships (as opposed to the aerial warfare role of aircraft carriers). The role of the cruiser varied according to ship and navy, often including air defense and shore bombardment. During the Cold War the Soviet Navy's cruisers had heavy anti-ship missile armament designed to sink NATO carrier task-forces via saturation attack. The U.S. Navy built guided-missile cruisers upon destroyer-style hulls (some called "destroyer leaders" or "frigates" prior to the 1975 reclassification) primarily designed to provide air defense while often adding anti-submarine capabilities, being larger and having longer-range surface-to-air missiles (SAMs) than early Charles F. Adams guided-missile destroyers tasked with the short-range air defense role. By the end of the Cold War the line between cruisers and destroyers had blurred, with the Ticonderoga-class cruiser using the hull of the Spruance-class destroyer but receiving the cruiser designation due to their enhanced mission and combat systems.
As of 2023, only two countries operated active duty vessels formally classed as cruisers: the United States and Russia. These cruisers are primarily armed with guided missiles, with the exceptions of the aircraft cruiser Admiral Kuznetsov. BAP Almirante Grau was the last gun cruiser in service, serving with the Peruvian Navy until 2017.
Nevertheless, other classes in addition to the above may be considered cruisers due to differing classification systems. The US/NATO system includes the Type 055 from China and the Kirov and Slava from Russia. International Institute for Strategic Studies' "The Military Balance" defines a cruiser as a surface combatant displacing at least 9750 tonnes; with respect to vessels in service as of the early 2020s it includes the Type 055, the Sejong the Great from South Korea, the Atago and Maya from Japan and the Flight III Arleigh Burke, Ticonderoga and Zumwalt from the US.
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Cannon
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Q81103
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A cannon is a large-caliber gun classified as a type of artillery, which usually launches a projectile using explosive chemical propellant. Gunpowder ("black powder") was the primary propellant before the invention of smokeless powder during the late 19th century. Cannons vary in gauge, effective range, mobility, rate of fire, angle of fire and firepower; different forms of cannon combine and balance these attributes in varying degrees, depending on their intended use on the battlefield. A cannon is a type of heavy artillery weapon. The word cannon is derived from several languages, in which the original definition can usually be translated as tube, cane, or reed.
The earliest known depiction of cannons may have appeared in Song dynasty China as early as the 12th century; however, solid archaeological and documentary evidence of cannons do not appear until the 13th century. In 1288, Yuan dynasty troops are recorded to have used hand cannons in combat, and the earliest extant cannon bearing a date of production comes from the same period. By the end of the 14th century, cannons were widespread throughout Eurasia.
Cannons were used primarily as anti-infantry weapons until around 1374, when large cannons were recorded to have breached walls for the first time in Europe. Cannons featured prominently as siege weapons. In 1464 a 16,000 kg (35,000 lb) cannon known as the Great Turkish Bombard was created in the Ottoman Empire. Cannons as field artillery became more important after 1453 when cannons broke down the walls of the Roman Empire's capital, with the introduction of limber, which greatly improved cannon maneuverability and mobility. European cannons reached their longer, lighter, more accurate, and more efficient "classic form" around 1480. This classic European cannon design stayed relatively consistent in form with minor changes until the 1750s.
In the modern era, the term cannon has fallen into decline, replaced by guns or artillery, if not a more specific term such as howitzer or mortar, except for high-caliber automatic weapons firing bigger rounds than machine guns, called autocannons.
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Cook Islands
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Q26988
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The Cook Islands is an island country in Polynesia, part of Oceania in the South Pacific Ocean. It consists of 15 islands whose total land area is approximately 236.7 square kilometres (91 sq mi). The Cook Islands' Exclusive Economic Zone (EEZ) covers 1,960,027 square kilometres (756,771 sq mi) of ocean. Avarua is its capital.
The Cook Islands is self-governing while in free association with New Zealand. Since the start of the 21st century, the Cook Islands has directed its own independent foreign and defence policy, and also has its own customs regulations. Like most members of the Pacific Islands Forum, it has no armed forces, but the Cook Islands Police Service owns a Guardian Class Patrol Boat, CIPPB Te Kukupa II, provided by Australia, in order to police its waters. In recent decades, the Cook Islands have adopted an increasingly assertive and distinct foreign policy, and a Cook Islander, Henry Puna, served as Secretary General of the Pacific Islands Forum from 2021 to 2024. Most Cook Islanders are also citizens of New Zealand, but they also have the status of Cook Islands nationals, which is not given to other New Zealand citizens. The Cook Islands have been an active member of the Pacific Community since 1980.
The Cook Islands' main population centres are on the island of Rarotonga (10,863 in 2021). The Rarotonga International Airport, the main international gateway to the country, is located on this island. The census of 2021 put the total population at 14,987. There is also a larger population of Cook Islanders in New Zealand and Australia: in the 2018 New Zealand census, 80,532 people said they were Cook Islanders, or of Cook Islands descent. The last Australian census recorded 28,000 Cook Islanders living in Australia, many with Australian citizenship. With over 168,000 visitors to the islands in 2018, tourism is the country's main industry and leading element of its economy, ahead of offshore banking, pearls, and marine and fruit exports.
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Computer file
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Q82753
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A computer file is a resource for recording data on a computer storage device, primarily identified by its filename. Just as words can be written on paper, so too can data be written to a computer file. Files can be shared with and transferred between computers and mobile devices via removable media, networks, or the Internet.
Different types of computer files are designed for different purposes. A file may be designed to store a written message, a document, a spreadsheet, an image, a video, a program, or any wide variety of other kinds of data. Certain files can store multiple data types at once.
By using computer programs, a person can open, read, change, save, and close a computer file. Computer files may be reopened, modified, and copied an arbitrary number of times.
Files are typically organized in a file system, which tracks file locations on the disk and enables user access.
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Chocolate
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Q195
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Chocolate is a food made from roasted and ground cocoa beans that can be a liquid, solid, or paste, either by itself or to flavor other foods.
Cocoa beans are the processed seeds of the cacao tree (Theobroma cacao). Unprocessed, they taste intensely bitter. In making chocolate, cacao seeds are fermented to develop the flavor, then dried, cleaned, and roasted. The shell is removed to reveal nibs, which are ground to chocolate liquor: unadulterated chocolate in rough form. The liquor can be processed to separate its two components, cocoa solids and cocoa butter, or shaped and sold as unsweetened baking chocolate. By adding sugar, sweetened chocolates are produced. This can be sold simply as dark chocolate, or, with the addition of milk powder, can be made into milk chocolate. Making milk chocolate with cocoa butter and no cocoa solids produces white chocolate. In some chocolates, other ingredients such as vegetable oils, emulsifiers and flavorings are included.
Chocolate is one of the most popular food types and flavors in the world, and many foodstuffs involving chocolate exist, particularly desserts, including cakes, mousse, and cookies. Many candies are filled with or coated with sweetened chocolate. Chocolate bars, either made of solid chocolate or other ingredients coated in chocolate, are eaten as snacks. Gifts of chocolate molded into different shapes (such as eggs, hearts, and coins) are traditional on certain Western holidays, including Christmas, Easter, Valentine's Day, and Hanukkah. Chocolate is also used in cold and hot beverages, such as chocolate milk, hot chocolate and chocolate liqueur.
The cacao tree was first used as a source for food in what is today Ecuador at least 5,300 years ago. Mesoamerican civilizations widely consumed cacao beverages, and in the 16th century, one of these beverages, chocolate, was introduced to Europe. Until the 19th century, chocolate was a drink consumed by societal elite. After then, technological and cocoa production changes led to chocolate becoming a solid, mass-consumed food. Today, the cocoa beans for most chocolate is produced in West African countries, particularly Ivory Coast and Ghana, which contribute about 60% of the world's cocoa supply. The presence of child labor, particularly child slavery and trafficking, in cocoa bean production in these countries has received significant media attention.
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Chemotherapy
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Q974135
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Chemotherapy (often abbreviated chemo, sometimes CTX and CTx) is the type of cancer treatment that uses one or more anti-cancer drugs (chemotherapeutic agents or alkylating agents) in a standard regimen. Chemotherapy may be given with a curative intent (which almost always involves combinations of drugs), or it may aim only to prolong life or to reduce symptoms (palliative chemotherapy). Chemotherapy is one of the major categories of the medical discipline specifically devoted to pharmacotherapy for cancer, which is called medical oncology.
The term chemotherapy now means the non-specific use of intracellular poisons to inhibit mitosis (cell division) or to induce DNA damage (so that DNA repair can augment chemotherapy). This meaning excludes the more-selective agents that block extracellular signals (signal transduction). Therapies with specific molecular or genetic targets, which inhibit growth-promoting signals from classic endocrine hormones (primarily estrogens for breast cancer and androgens for prostate cancer), are now called hormonal therapies. Other inhibitions of growth-signals, such as those associated with receptor tyrosine kinases, are targeted therapy.
The use of drugs (whether chemotherapy, hormonal therapy, or targeted therapy) is systemic therapy for cancer: they are introduced into the blood stream (the system) and therefore can treat cancer anywhere in the body. Systemic therapy is often used with other, local therapy (treatments that work only where they are applied), such as radiation, surgery, and hyperthermia.
Traditional chemotherapeutic agents are cytotoxic by means of interfering with cell division (mitosis) but cancer cells vary widely in their susceptibility to these agents. To a large extent, chemotherapy can be thought of as a way to damage or stress cells, which may then lead to cell death if apoptosis is initiated. Many of the side effects of chemotherapy can be traced to damage to normal cells that divide rapidly and are thus sensitive to anti-mitotic drugs: cells in the bone marrow, digestive tract and hair follicles. This results in the most common side-effects of chemotherapy: myelosuppression (decreased production of blood cells, hence that also immunosuppression), mucositis (inflammation of the lining of the digestive tract), and alopecia (hair loss). Because of the effect on immune cells (especially lymphocytes), chemotherapy drugs often find use in a host of diseases that result from harmful overactivity of the immune system against self (so-called autoimmunity). These include rheumatoid arthritis, systemic lupus erythematosus, multiple sclerosis, vasculitis and many others.
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Chinese Communist Party
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Q17427
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The Chinese Communist Party (CCP), officially the Communist Party of China (CPC), is the founding and sole ruling party of the People's Republic of China (PRC). Founded in 1921, the CCP emerged victorious in the Chinese Civil War against the Kuomintang and proclaimed the establishment of the PRC under the leadership of Mao Zedong in October 1949. Since then, the CCP has governed China and has had sole control over the People's Liberation Army (PLA). As of 2024, the CCP has more than 99 million members, making it the second largest political party by membership in the world.
In 1921, Chen Duxiu and Li Dazhao led the founding of the CCP with the help of the Far Eastern Bureau of the Russian Communist Party (Bolsheviks) and Far Eastern Bureau of the Communist International. Although the CCP aligned with the Kuomintang (KMT) during its initial years, the rise of the right-wing in the KMT under the leadership of Chiang Kai-Shek and massacre of tens of thousands of CCP members, resulted in the split and a prolonged civil war between the two. During the next ten years of guerrilla warfare, Mao Zedong rose to become the most influential figure in the CCP, and the party established a strong base among the rural peasantry with its land reform policies. Support for the CCP continued to grow throughout the Second Sino-Japanese War, and after the Japanese surrender in 1945, the CCP emerged triumphant in the communist revolution against the Nationalist government. After the KMT's retreat to Taiwan, the CCP established the People's Republic of China on 1 October 1949.
Mao Zedong continued to be the most influential member of the CCP until his death in 1976. Under Mao, the party completed its land reform program, launched a series of five-year plans, and eventually split with the Soviet Union. Although Mao attempted to purge the party of capitalist and reactionary elements during the Cultural Revolution, after his death, these policies were only briefly continued by the Gang of Four before a less radical faction seized control. During the 1980s, Deng Xiaoping directed the CCP away from Maoist orthodoxy and towards a policy of economic liberalization. Since the collapse of the Eastern Bloc and the dissolution of the Soviet Union in 1991, the CCP has focused on maintaining its relations with the ruling parties of the remaining socialist states. The CCP has also established relations with several non-communist parties, including dominant nationalist parties of many developing countries in Africa, Asia and Latin America, as well as social democratic parties in Europe.
The Chinese Communist party's ideology consists of socialism with Chinese characteristics. As a Marxist–Leninist party, the Chinese Communist Party is organized based on democratic centralism, a principle that entails open policy discussion on the condition of unity among party members in upholding the agreed-upon decision. The highest body of the CCP is the National Congress, convened every fifth year. When the National Congress is not in session, the Central Committee is the highest body, but since that body usually only meets once a year, most duties and responsibilities are vested in the Politburo and its Standing Committee. Members of the latter are seen as the top leadership of the party and the state. Today the party's leader holds the offices of general secretary (responsible for civilian party duties), Chairman of the Central Military Commission (CMC) (responsible for military affairs), and State President (a largely ceremonial position). Because of these posts, the party leader is seen as the country's paramount leader. The current leader is Xi Jinping, who was elected at the 1st Plenary Session of the 18th Central Committee held on 15 November 2012 and has been reelected twice, on 25 October 2017 by the 19th Central Committee and on 10 October 2022 by the 20th Central Committee.
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Cairn
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Q7321974
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A cairn is a human-made pile (or stack) of stones raised for a purpose, usually as a marker or as a burial mound. The word cairn comes from the Irish: carn [ˈkʰaːrˠn̪ˠ] (plural cairn [ˈkʰaːrˠɲ]).
Cairns have been and are used for a broad variety of purposes. In prehistory, they were raised as markers, as memorials and as burial monuments (some of which contained chambers).
In the modern era, cairns are often raised as landmarks, especially to mark the summits of mountains, and as trail markers. They vary in size from small piles of stones to entire artificial hills, and in complexity from loose conical rock piles to elaborate megalithic structures. Cairns may be painted or otherwise decorated, whether for increased visibility or for religious reasons.
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Class action
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Q2783852
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A class action, also known as a class action lawsuit, class suit, or representative action, is a type of lawsuit where one of the parties is a group of people who are represented collectively by a member or members of that group. The class action originated in the United States and is still predominantly an American phenomenon, but Canada, as well as several European countries with civil law, have made changes in recent years to allow consumer organizations to bring claims on behalf of consumers.
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Choctaw
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Q324516
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The Choctaw (Choctaw: Chahta Choctaw pronunciation: [tʃahtá(ʔ)]) people are one of the Indigenous peoples of the Southeastern Woodlands of the United States, originally based in what is now Louisiana, Mississippi and Alabama. The Choctaw language is a Western Muskogean language. Today, Choctaw people are enrolled in three federally recognized tribes: the Choctaw Nation of Oklahoma, Mississippi Band of Choctaw Indians, Jena Band of Choctaw Indians in Louisiana. Choctaw descendants are also members of other tribes.
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Constantine the Great
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Q8413
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Constantine I (27 February 272 – 22 May 337), also known as Constantine the Great, was a Roman emperor from AD 306 to 337 and the first Roman emperor to convert to Christianity. He played a pivotal role in elevating the status of Christianity in Rome, decriminalising Christian practice and ceasing Christian persecution. This was a turning point in the Christianisation of the Roman Empire. He founded the city of Constantinople (modern-day Istanbul) and made it the capital of the Empire, for which it remained over a millennium.
Born in Naissus, a city located in the province of Moesia Superior (now Niš, Serbia), Constantine was the son of Flavius Constantius, a Roman army officer of Illyrian origin from Moesia Superior, who would become one of the four emperors of the Tetrarchy. His mother, Helena, was a woman of low birth, probably from Asia Minor in modern Turkey. Later canonised as a saint, she is credited for the conversion of her son in some traditions, though others believe that Constantine converted her. Constantine served with distinction under the Roman emperors Diocletian and Galerius. He began his career by campaigning in the eastern provinces against the Persians, before being recalled to the west in AD 305 to fight alongside his father in the province of Britannia. After his father's death in 306, Constantine was proclaimed as augustus (emperor) by his army at Eboracum (York, England). He eventually emerged victorious in the civil wars against the emperors Maxentius and Licinius to become the sole ruler of the Roman Empire by 324.
Upon his ascension, Constantine enacted numerous reforms to strengthen the empire. He restructured the government, separating civil and military authorities. To combat inflation, he introduced the solidus, a new gold coin that became the standard for Byzantine and European currencies for more than a thousand years. The Roman army was reorganised to consist of mobile units (comitatenses), often around the emperor, to serve on campaigns against external enemies or Roman rebels, and frontier-garrison troops (limitanei) which were capable of countering barbarian raids, but less and less capable, over time, of countering full-scale barbarian invasions. Constantine pursued successful campaigns against the tribes on the Roman frontiers—such as the Franks, the Alemanni, the Goths, and the Sarmatians—and resettled territories abandoned by his predecessors during the Crisis of the Third Century with citizens of Roman culture.
Although Constantine lived much of his life as a pagan and later as a catechumen, he began to favour Christianity beginning in 312, finally becoming a Christian and being baptised by Eusebius of Nicomedia, an Arian bishop, although the Catholic Church and the Coptic Orthodox Church maintain that he was baptised by Pope Sylvester I. He played an influential role in the proclamation of the Edict of Milan in 313, which declared tolerance for Christianity in the Roman Empire. He convoked the First Council of Nicaea in 325 which produced the statement of Christian belief known as the Nicene Creed. On his orders, the Church of the Holy Sepulchre was built at the site claimed to be the tomb of Jesus in Jerusalem, and was deemed the holiest place in all of Christendom. The papal claim to temporal power in the High Middle Ages was based on the fabricated Donation of Constantine. He has historically been referred to as the "First Christian Emperor", but while he did favour the Christian Church, some modern scholars debate his beliefs and even his comprehension of Christianity. Nevertheless, he is venerated as a saint in Eastern Christianity, and he did much to push Christianity towards the mainstream of Roman culture.
The age of Constantine marked a distinct epoch in the history of the Roman Empire and a pivotal moment in the transition from classical antiquity to the Middle Ages. He built a new imperial residence in the city of Byzantium, which was officially renamed New Rome, while also taking on the name Constantinople in his honour. It subsequently served as the capital of the empire for more than a thousand years—with the Eastern Roman Empire for most of that period commonly referred to retrospectively as the Byzantine Empire in English. In leaving the empire to his sons and other members of the Constantinian dynasty, Constantine's immediate political legacy was the effective replacement of Diocletian's Tetrarchy with the principle of dynastic succession. His memory was held in high regard during the lifetime of his children and for centuries after his reign. The medieval church held him up as a paragon of virtue, while secular rulers invoked him as a symbol of imperial legitimacy. The rediscovery of anti-Constantinian sources in the early Renaissance engendered more critical appraisals of his reign, with modern and contemporary scholarship often seeking to balance the extremes of earlier accounts.
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Cricket World Cup
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Q192202
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The ICC Men's Cricket World Cup is a quadrennial world cup for cricket in One Day International (ODI) format, organised by the International Cricket Council (ICC). The tournament is one of the world's most viewed sporting events and considered the flagship event of the international cricket calendar by the ICC.
The first Cricket World Cup was organised in England in June 1975, with the first ODI cricket match having been played only four years earlier. However, a separate Women's Cricket World Cup had been held two years before the first men's tournament, and a tournament involving multiple international teams had been held as early as 1912, when a triangular tournament of Test matches was played between Australia, England and South Africa. The first three World Cups were held in England. From the 1987 tournament onwards, hosting has been shared between countries under an unofficial rotation system, with 14 ICC members having hosted at least one match in the tournament.
The current format involves a qualification phase, which takes place over the preceding three years, to determine which teams qualify for the tournament phase. In the tournament phase, 10 teams, including the automatically qualifying host nation, compete for the title at venues within the host nation over about a month. In the 2027 World Cup, the format will be changed to accommodate an expanded 14-team final competition.
A total of twenty teams have competed in the 13 editions of the tournament, with ten teams competing in the recent 2023 tournament. Australia has won the tournament six times, India and West Indies twice each, while Pakistan, Sri Lanka and England have won it once each. The best performance by a non-full-member team came when Kenya made the semi-finals of the 2003 tournament.
Australia are the current champions after winning the 2023 World Cup in India. The subsequent 2027 World Cup will be held jointly in South Africa, Zimbabwe and Namibia.
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Central nervous system
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Q47273
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The central nervous system (CNS) is the part of the nervous system consisting primarily of the brain, spinal cord and retina. The CNS is so named because the brain integrates the received information and coordinates and influences the activity of all parts of the bodies of bilaterally symmetric and triploblastic animals—that is, all multicellular animals except sponges and diploblasts. It is a structure composed of nervous tissue positioned along the rostral (nose end) to caudal (tail end) axis of the body and may have an enlarged section at the rostral end which is a brain. Only arthropods, cephalopods and vertebrates have a true brain, though precursor structures exist in onychophorans, gastropods and lancelets.
The rest of this article exclusively discusses the vertebrate central nervous system, which is radically distinct from all other animals.
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Chapter 11, Title 11, United States Code
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Q1062835
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Chapter 11 of the United States Bankruptcy Code (Title 11 of the United States Code) permits reorganization under the bankruptcy laws of the United States. Such reorganization, known as Chapter 11 bankruptcy, is available to every business, whether organized as a corporation, partnership or sole proprietorship, and to individuals, although it is most prominently used by corporate entities. In contrast, Chapter 7 governs the process of a liquidation bankruptcy, though liquidation may also occur under Chapter 11; while Chapter 13 provides a reorganization process for the majority of private individuals.
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Commodore 64
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Q99775
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The Commodore 64, also known as the C64, is an 8-bit home computer introduced in January 1982 by Commodore International (first shown at the Consumer Electronics Show, January 7–10, 1982, in Las Vegas). It has been listed in the Guinness World Records as the highest-selling single computer model of all time, with independent estimates placing the number sold between 12.5 and 17 million units. Volume production started in early 1982, marketing in August for US$595 (equivalent to $1,940 in 2024). Preceded by the VIC-20 and Commodore PET, the C64 took its name from its 64 kilobytes (65,536 bytes) of RAM. With support for multicolor sprites and a custom chip for waveform generation, the C64 could create superior visuals and audio compared to systems without such custom hardware.
The C64 dominated the low-end computer market (except in the UK, France and Japan, lasting only about six months in Japan) for most of the later years of the 1980s. For a substantial period (1983–1986), the C64 had between 30% and 40% share of the US market and two million units sold per year, outselling IBM PC compatibles, the Apple II, and Atari 8-bit computers. Sam Tramiel, a later Atari president and the son of Commodore's founder, said in a 1989 interview, "When I was at Commodore we were building 400,000 C64s a month for a couple of years." In the UK market, the C64 faced competition from the BBC Micro, the ZX Spectrum, and later the Amstrad CPC 464, but the C64 was still the second-most-popular computer in the UK after the ZX Spectrum. The Commodore 64 failed to make any impact in Japan, as their market was dominated by Japanese computers, such as the NEC PC-8801, Sharp X1, Fujitsu FM-7 and MSX, and in France, where the ZX Spectrum, Thomson MO5 and TO7, and Amstrad CPC 464 dominated the market.
Part of the Commodore 64's success was its sale in regular retail stores instead of only electronics or computer hobbyist specialty stores. Commodore produced many of its parts in-house to control costs, including custom integrated circuit chips from MOS Technology. In the United States, it has been compared to the Ford Model T automobile for its role in bringing a new technology to middle-class households via creative and affordable mass-production. Approximately 10,000 commercial software titles have been made for the Commodore 64, including development tools, office productivity applications, and video games. C64 emulators allow anyone with a modern computer, or a compatible video game console, to run these programs today. The C64 is also credited with popularizing the computer demoscene and is still used today by some computer hobbyists. In 2011, 17 years after it was taken off the market, research showed that brand recognition for the model was still at 87%.
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Colonialism
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Q7167
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Colonialism is the control of another territory, natural resources and people by a foreign group. Colonizers control the political and tribal power of the colonised territory. While frequently an imperialist project, colonialism can also take the form of settler colonialism, whereby settlers from one or multiple colonizing metropoles occupy a territory with the intention of partially or completely supplanting the existing population.: 2
Colonialism developed as a concept describing European colonial empires of the modern era, which spread globally from the 15th century to the mid-20th century, spanning 35% of Earth's land by 1800 and peaking at 84% by the beginning of World War I. European colonialism employed mercantilism and chartered companies, and established coloniality, which keeps the colonized socio-economically othered and subaltern through modern biopolitics of sexuality, gender, race, disability and class, among others, resulting in intersectional violence and discrimination. Colonialism has been justified with beliefs of having a civilizing mission to cultivate land and life, based on beliefs of entitlement and superiority, historically often rooted in the belief of a Christian mission.
Because of this broad impact different instances of colonialism have been identified from around the world and in history, starting with when colonization was developed by developing colonies and metropoles, the base colonial separation and characteristic.
Decolonization, which started in the 18th century, gradually led to the independence of colonies in waves, with a particular large wave of decolonizations happening in the aftermath of World War II between 1945 and 1975. Colonialism has a persistent impact on a wide range of modern outcomes, as scholars have shown that variations in colonial institutions can account for variations in economic development, regime types, and state capacity. Some academics have used the term neocolonialism to describe the continuation or imposition of elements of colonial rule through indirect means in the contemporary period.
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Computer security
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Q3510521
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Computer security (also cybersecurity, digital security, or information technology (IT) security) is a subdiscipline within the field of information security. It consists of the protection of computer software, systems and networks from threats that can lead to unauthorized information disclosure, theft or damage to hardware, software, or data, as well as from the disruption or misdirection of the services they provide.
The significance of the field stems from the expanded reliance on computer systems, the Internet, and wireless network standards. Its importance is further amplified by the growth of smart devices, including smartphones, televisions, and the various devices that constitute the Internet of things (IoT). Cybersecurity has emerged as one of the most significant new challenges facing the contemporary world, due to both the complexity of information systems and the societies they support. Security is particularly crucial for systems that govern large-scale systems with far-reaching physical effects, such as power distribution, elections, and finance.
Although many aspects of computer security involve digital security, such as electronic passwords and encryption, physical security measures such as metal locks are still used to prevent unauthorized tampering. IT security is not a perfect subset of information security, therefore does not completely align into the security convergence schema.
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