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Area 51

(Encyclopedia)Area 51, name for a U.S. military site, S Nev., c.80 mi (130 km) NNW of Las Vegas. Shrouded in secrecy since the mid-20th cent., it is located within the U.S. Air Force's enormous Nevada Test and Trai...

rainmaking

(Encyclopedia)rainmaking, production of rain by artificial means now generally disregarded, though it is probable that rainmaking hastens or increases rainfall from clouds suitable for natural rainfall. Interest in...

frostbite

(Encyclopedia)frostbite (chilblains), injury to the tissue caused by exposure to cold, usually affecting the extremities of the body, such as the hands, feet, ears, or nose. Extreme cold causes the small blood vess...

détente

(Encyclopedia)détente, relaxation of tensions between nations, applied particularly to a period of improved relations between the United States and Soviet Union in the 1960s and 70s that resulted as the hostilitie...

echinacea

(Encyclopedia)echinacea ĕkˌənāˈshēə [key], popular herbal remedy, or botanical, believed to benefit the immune system. It is used especially to alleviate common colds and the flu. Several controlled studies ...

Morelos

(Encyclopedia)Morelos mōrāˈlōs [key], state (1990 pop. 1,195,059), 1,917 sq mi (4,965 sq km), S Mexico. Cuernavaca is the capital. Morelos is separated from the Federal District and from Mexico state by the eas...

Dulles, Allen Welsh

(Encyclopedia)Dulles, Allen Welsh dŭlˈəs [key], 1893–1969, U.S. public official, b. Watertown, N.Y.; brother of John Foster Dulles. The Dulles brothers, born into America's political establishment, became extr...

Challenger

(Encyclopedia)Challenger, U.S. space shuttle. It exploded (Jan. 28, 1986) 73 seconds into its tenth flight, killing all seven crew members, including the first civilian in space, schoolteacher Christa McAuliffe. Th...

Pérez de Cuéllar, Javier

(Encyclopedia)Pérez de Cuéllar, Javier, 1920–2020, Peruvian diplomat, secretary-general of the United Nations (1982–92). He entered the Peruvian foreign service in 1940 and served in several posts, including ...

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