Columbia Encyclopedia

Search results

500 results found

Cronkite, Walter

(Encyclopedia)Cronkite, Walter (Walter Leland Cronkite, Jr.) krŏngˈkīt, krŏnˈ– [key], 1916–2009, American news broadcaster, b. St. Joseph, Mo. He left (1935) the Univ. of Texas to write for the Houston Pre...

civil defense

(Encyclopedia)civil defense, nonmilitary activities designed to protect civilians and their property from enemy actions in time of war. A civil defense program usually includes measures taken during peace (e.g., bu...

Van Allen, James Alfred

(Encyclopedia)Van Allen, James Alfred, 1914–2006, American physicist and space scientist, Mt. Pleasant, Iowa. A graduate (Ph.D 1939) of and professor of physics (1951–85) at what is now the Univ. of Iowa, where...

Social Credit

(Encyclopedia)Social Credit, economic plan in Canada, based on the theories of Clifford Hugh Douglas. The central idea is that the problems fundamental to economic depression are those of unequal distribution owing...

Berners-Lee, Tim

(Encyclopedia)Berners-Lee, Tim (Sir Timothy John Berners-Lee), 1955–, British computer scientist, b. London, grad. The Queen's College, Oxford (B.A. 1976). He joined CERN, near Geneva, Switzerland, as a consultan...

biathlon

(Encyclopedia)biathlon bīăthˈlŏn [key], sport in which cross-country skiers race across hilly terrain, occasionally stopping to shoot, prone or standing as required, with rifles at sets of fixed targets. The bi...

Kansas-Nebraska Act

(Encyclopedia)Kansas-Nebraska Act, bill that became law on May 30, 1854, by which the U.S. Congress established the territories of Kansas and Nebraska. By 1854 the organization of the vast Platte and Kansas river c...

Antarctic Circle

(Encyclopedia)Antarctic Circle, imaginary circle on the surface of the earth at 661⁄2°S lat., i.e., 231⁄2° north of the South Pole. It marks the southernmost point at which the sun can be seen at the winter s...

Arctic Circle

(Encyclopedia)Arctic Circle, imaginary circle on the surface of the earth at 661⁄2°N latitude, i.e., 231⁄2° south of the North Pole. It marks the northernmost point at which the sun can be seen at the winter ...

Campina Grande

(Encyclopedia)Campina Grande kəmpēˈnä gränˈdĭ [key], city, Paraíba state, NE Brazil, on the...