| Amateur astronomy Amateur astronomy, also called backyard astronomy, is a hobby whose participants enjoy watching the night sky (and the day sky too, for sunspots, eclipses, etc.), and the plethora of objects found in it, mainly with portable telescopes and binoculars. Even though scientific research is not their main goal, many amateur astronomers make a contribution to astronomy by monitoring variable stars, tracking asteroids and discovering transient objects, such as comets. Amateur_astronomy
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| Abortion An abortion is the termination of a pregnancy by the removal or expulsion from the uterus of a fetus/embryo, resulting in or caused by its death. An abortion can occur spontaneously due to complications during pregnancy or can be induced, in humans and other species. Abortion
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| Amino acid In chemistry, an amino acid is a molecule containing both amine and carboxyl functional groups. These molecules are particularly important in biochemistry, where this term refers to alpha-amino acids with the general formula H2NCHRCOOH, where R is an organic substituent. Amino_acid
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| Andrew Johnson Andrew Johnson (December 29, 1808 17th President of the United States (1865the assassination of Abraham Lincoln. He was the first U.S. President to be impeached. At the time of the secession of the Southern states, Johnson was a U.S. Senator from Greeneville in eastern Tennessee. Andrew_Johnson
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| African American Black Americans or African Americans are citizens or residents of the United States who have origins in any of the black populations of Africa. In the United States, the terms are generally used for Americans with at least partial Sub-Saharan African ancestry. African_American
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| Bill Clinton William Jefferson "Bill" Clinton (born William Jefferson Blythe III, August 19, 1946) served as the 42nd President of the United States from 1993 to 2001. He was the third-youngest president; only Theodore Roosevelt and John F. Kennedy were younger when entering office. Bill_Clinton
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| Blue Talk:Blue
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| Black hole In general relativity, a black hole is a region of space in which the gravitational field is so powerful that nothing, including light, can escape its pull. The black hole has a one-way surface, called an event horizon, into which objects can fall, but out of which nothing can come. It is called "black" because it absorbs all the light that hits it, reflecting nothing, just like a perfect blackbody in thermodynamics. Quantum analysis of black holes shows them to possess a temperature and Hawking radiation. Black_hole
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| Country music Country music (or country and western) is a blend of popular musical forms originally found in the Southern United States and the Appalachian Mountains. It has roots in traditional folk music, Celtic music, gospel music, and old-time music and evolved rapidly in the 1920s. Country_music
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| Country code Country codes are short alphabetic or numeric geographical codes (geocodes) developed to represent countries and dependent areas, for use in data processing and communications. Several different systems have been developed to do this. The best known of these is ISO 3166-1. The term country code frequently refers to international dialing codes, the E.164 country calling codes. Country_code
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| Conversion of units Conversion of units refers to conversion factors between different units of measurement for the same quantity. Conversion_of_units
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| Consciousness Consciousness is often used colloquially to describe being awake and aware—responsive to the environment, in contrast to being asleep or in a coma. In philosophical and scientific discussion, however, the term is restricted to the specific way in which humans are mentally aware in such a way that they distinguish clearly between themselves (the thing being aware) and all other things and events. This "self-awareness" may involve thoughts, sensations, perceptions, moods, emotions, and dreams. Consciousness
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| Christianity and antisemitism Christian antisemitism is considered to have started around the 12th century, but scholars have traced its roots to anti-Jewish attitudes and polemic beginning with Early Christianity.Although the first Christians were Jewish (as was the Gospel according to the Hebrews) Christian anti-Judaic attitudes started to develop even before the end of the first century and even though there is evidence of continued Jewish-Christian interaction, including Christian participation in Sabbath worship. Christianity_and_antisemitism
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| Centers for Disease Control and Prevention Talk:Centers_for_Disease_Control_and_Prevention
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| Celts Talk:Celts
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| Confederate States of America The Confederate States of America (also called the Confederacy, the Confederate States, and the CSA) formed as the government set up from 1861 to 1865 by eleven southern slave states of the United States of America, each of which had previously declared their secession from the United States. The CSA's de facto control over its claimed territory varied during the course of the American Civil War, depending on the success of its military. Confederate_States_of_America
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| Celtic mythology Celts mythology is the mythology of Celtic polytheism, apparently the religion of the Iron Age Celts. Like other Iron Age Europeans, the early Celts maintained a polytheistic mythology and religious structure. Among Celts peoples in close contact with Ancient Rome, such as the Gauls and Celtiberians, their mythology did not survive the Roman empire, their subsequent conversion to Christianity, and the loss of their Celtic languages. Celtic_mythology
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| The Canterbury Tales The Canterbury Tales is a collection of stories written by Geoffrey Chaucer in the 14th century (two of them in prose, the remaining twenty-two in verse). The tales are contained inside a frame tale and told by a collection of pilgrims on a pilgrimage from London Borough of Southwark to visit the shrine of Saint Thomas Becket at Canterbury Cathedral. The_Canterbury_Tales
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| DNA Deoxyribonucleic acid (DNA) is a nucleic acid that contains the genetic instructions used in the development and functioning of all known living organisms and some viruses. The main role of DNA molecules is the long-term storage of information. DNA is often compared to a set of blueprints or a recipe, or a code, since it contains the instructions needed to construct other components of cells, such as proteins and RNA molecules. DNA
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| Military of the Democratic Republic of the Congo The Armed Forces of the Democratic Republic of Congo () is the state military organisation responsible for defending the Democratic Republic of Congo. The FARDC is being rebuilt as part of the peace process which followed the end of the Second Congo War in July 2003. Military_of_the_Democratic_Republic_of_the_Congo
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| Douglas Hofstadter Douglas Richard Hofstadter (born February 15, 1945 in New York, New York) is an American academic whose research focuses on consciousness, thinking and creativity. He is best known for his book Gödel, Escher, Bach, first published in 1979, for which he was awarded the 1980 Pulitzer Prize for general non-fiction. Douglas_Hofstadter
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| Ephesus Ephesus (Ancient Greek ''Turkish Efes ) was an ancient Greek city on the west coast of Anatolia, near present day Selçuk, Izmir province, Turkey. It was one of the twelve cities of the Ionian League during the Classical Greek period. The city was famed for the Temple of Artemis (completed around 550 BCE), one of the Seven Wonders of the Ancient World. Ephesus
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| Exxon Valdez oil spill The Exxon Valdez oil spill occurred in the Prince William Sound, Alaska, on March 24, 1989. It is considered one of the most devastating human-caused environmental disasters ever to occur at sea. As significant as the Exxon Valdez spill was, it ranks well down on the list of the world's largest oil spills in terms of volume released. Exxon_Valdez_oil_spill
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| Erlang (unit) erlang (symbol E where is the probability of blocking m is the number of resources such as servers or circuits in a group E = λh is the total amount of traffic offered in erlangs This may be expressed recursively as follows, in a form that is used to simplify the calculation of tables of the Erlang B formula Erlang_(unit)
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| Pre-Islamic period of Afghanistan Archaeological exploration of the Pre-Islamic period of Afghanistan began in Afghanistan in earnest after World War II and proceeded until the Soviet invasion of Afghanistan disrupted it in December 1979.Louis Dupree, the University of Pennsylvania, the Smithsonian Institution and others suggests that humans were living in ancient Afghanistan at least 50,000 years ago, and that farming communities of the country were among the earliest in the world. Pre-Islamic_period_of_Afghanistan
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| Free software Free software or software libre is software that can be used, studied, and modified without restriction, and which can be copied and redistributed in modified or unmodified form either without restriction, or with minimal restrictions only to ensure that further recipients can also do these things and that manufacturers of consumer-facing hardware allow user modifications to their hardware. Free software is available gratis (free of charge) in most cases. Free_software
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| Frederick Douglass Frederick Douglass (born Frederick Augustus Washington Bailey, (born circa 1818 February 20, 1895) was an American abolitionist, women's suffragist, editor, orator, author, statesman and reformer. Called "The Sage of Anacostia" and "The Lion of Anacostia", Douglass is one of the most prominent figures in African-American and United States history.He was a firm believer in the equality of all people, whether black, female, Native American, or recent immigrant. Frederick_Douglass
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| Folklore Folklore is the body of expressive culture, including tales, music, dance, legends, oral history, proverbs, jokes, popular beliefs, customs, and so forth within a particular population comprising the traditions (including oral traditions) of that culture, subculture, or group. Folklore
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| Fred Brooks Frederick Phillips Brooks, Jr. (born April 19, 1931) is a software engineer and computer scientist, best-known for managing the development of OS/360, then later writing candidly about the process in his seminal book The Mythical Man-Month. "It is a very humbling experience to make a multi-million-dollar mistake, but it is also very memorable." Brooks received a Turing Award in 1999 and many other awards. Fred_Brooks
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| Geoffrey Chaucer Geoffrey Chaucer (c. 1343 – 25 October 1400) was an English author, poet, philosopher, bureaucrat, courtier and diplomat. Although he wrote many works, he is best remembered for his unfinished frame narrative The Canterbury Tales. Sometimes called the father of English literature, Chaucer is credited by some scholars as the first author to demonstrate the artistic legitimacy of the vernacular English language, rather than French or Latin. Geoffrey_Chaucer
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| George Washington Carver George Washington Carver (January 1864 George_Washington_Carver
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| History of computing hardware The history of computing hardware encompasses the hardware, its architecture, and its impact on software. The von Neumann architecture unifies our current computing hardware implementations. History_of_computing_hardware
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| History of the Internet Before the widespread internetworking that led to the Internet, most communication networks were limited by their nature to only allow communications between the stations on the local network and the prevalent computer networking method was based on the central mainframe computer model. History_of_the_Internet
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| Hunter Scott Hunter Alan Scott (born June 9 1985) is best known for the research he did regarding the USS Indianapolis. He studied economics and physics at the University of North Carolina at Chapel Hill on a Naval ROTC scholarship, and graduated in May 2007.Scott is originally from Pensacola, Florida and is an alumnus of Pensacola High School. Hunter_Scott
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| Hebrew calendar Talk:Hebrew_calendar
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| History of medicine medical beliefs that provide explanations for birth, death, and disease. Throughout history, illness has been attributed to witchcraft, demons, adverse astral influence, or the will of the gods. These ideas still retain some power, with faith healing and shrines still used in some places, although the rise of scientific medicine over the past millennium has altered or replaced many of the old beliefs. History_of_medicine
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| Industrial Revolution The Industrial Revolution was a period in the late 18th and early 19th centuries when major changes in agriculture, manufacturing, mining, and transportation had a profound effect on the socioeconomic and cultural conditions in Britain. The changes subsequently spread throughout Europe, North America, and eventually the world. Industrial_Revolution
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| Ice age Talk:Ice_age
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| Imperial units This article is about the post-1824 measures used in the British Empire and countries in the British sphere of influence. For information about the units used in England before 1824, see English units. For information about the units used in the USA, see United States customary units. Imperial_units
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| Jazz Jazz is a musical art form which originated at the beginning of the 20th century in African American communities in the Southern United States from a confluence of African and European music traditions. The style's West African pedigree is evident in its use of blue notes, improvisation, polyrhythms, syncopation, and the swung note. Jazz
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| Jimmy Carter James Earl "Jimmy" Carter, Jr. (born October 1, 1924) was the 39th President of the United States from 1977 to 1981 and was the recipient of the 2002 Nobel Peace Prize. Prior to becoming president, Carter served two terms in the Georgia Senate followed by the governorship of the State of Georgia, from 1971 to 1975.As president, Carter created two new cabinet-level departmentsDepartment of Energy and the Department of Education. Jimmy_Carter
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| Jihad Jihad (; Jihad
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| Ku Klux Klan Ku Klux Klan (KKK), informally known as The Klan, is the name of several past and present secret militant organizations in the United States whose avowed purpose was to protect the rights of and further the interests of white Americans by violence and intimidation. Ku_Klux_Klan
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| Lighthouse A lighthouse is a tower, building, or framework designed to emit light from a system of lamps and lenses or, in older times, from a fire and used as an aid to navigation and to pilots at sea. Lighthouse
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| Language acquisition Talk:Language_acquisition
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| Middle Ages Middle Ages of European history (adjective form mediæval or medieval) are a period in history which lasted for roughly a millennium, commonly dated from the fall of the Western Roman Empire in the 5th century to the beginning of the Early Modern Period in the 16th century, marked by the division of Western Christianity in the Reformation, the rise of humanism in the Italian Renaissance, and the beginnings of European overseas expansion. Middle_Ages
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| Measurement Measurement is the process of assigning a number to an attribute (or phenomenon) according to a rule or set of rules. The term can also be used to refer to the result obtained after performing the process. Measurement
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| Mile Mile
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| Manuscript manuscript is a recording of information that has been manually created by someone or some people, such as a hand written letter, as opposed to being printed or reproduced in some other way. The term may also be used for information that is hand-recorded in other ways than writing, for example inscriptions that are chiselled upon a hard material or scratched (the original meaning of graffiti) as with a knife point in plaster or with a stylus on a waxed tablet, (the way Romans made notes), or are in cuneiform writing, impressed with a pointed stylus in a flat tablet of unbaked clay. Manuscript
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| Missouri Missouri
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