(Encyclopedia) Mackenzie, river, c.1,120 mi (1,800 km) long, issuing from Great Slave Lake, Northwest Territories, Canada, and flowing generally NW to the Arctic Ocean through a great delta. Between…
(Encyclopedia) dune, mound or ridge of wind-blown sand formed in arid regions and along coasts. Dunes are common in most of the great deserts of the world. Often a dune begins to form because…
(Encyclopedia) airport or airfield, place for landing and departure of aircraft, usually with facilities for housing and maintaining planes and for receiving and discharging passengers and cargo.…
(Encyclopedia) HerodotusHerodotushērŏdˈətəs [key], 484?–425? b.c., Greek historian, called the Father of History, b. Halicarnassus, Asia Minor. Only scant knowledge of his life can be gleaned from…
(Encyclopedia) Eve, in genetics, popular term for a theoretical female ancestor of all living people, also known as Mitochondrial Eve. In 1987 biochemist Allan C. Wilson proposed that all living…
(Encyclopedia) carbon dioxide, chemical compound, CO2, a colorless, odorless, tasteless gas that is about one and one-half times as dense as air under ordinary conditions of temperature and pressure…
(Encyclopedia) Kent, county (1991 pop. 1,485,600), 1,525 sq mi (3,950 sq km), SE England. It lies between the Thames estuary and the Strait of Dover. The county town is Maidstone, and the county is…
(Encyclopedia) Redmond, John Edward, 1856–1918, Irish nationalist leader. He was elected to Parliament as a Home Rule member in 1881 at the height of the obstructionist program of Charles Parnell.…
(Encyclopedia) advertising, in general, any openly sponsored offering of goods, services, or ideas through any medium of public communication. At its inception advertising was merely an announcement…
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