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Woolson, Constance Fenimore

(Encyclopedia) Woolson, Constance Fenimore, 1840–94, American novelist, b. Claremont, N.H.; grandniece of James Fenimore Cooper, and author of a number of well-written and popular works, including…

Södertälje

(Encyclopedia) SödertäljeSödertäljesödərtĕlˈyə [key], city (1990 pop. 58,198), Stockholm co., E Sweden, on a narrow bay of Lake Mälaren, near Stockholm. It is an industrial center and a health resort…

Siberian Platform

(Encyclopedia) Siberian Platform or Angara Shield, large, geologically stable area of Precambrian rocks, N Asia, comprising much of Siberia, Russia. It is bounded, in general, on the west by the…

Why did the dinosaurs die out?

There are dozens of theories to explain a probable cause or causes. Throughout the Mesozoic Era, individual dinosaur species were evolving and becoming extinct for various reasons. The unusually…

John Presper Eckert, Jr.

Born: 1919Birthplace: Philadelphia, Pa. ENIAC data translating device—Engineers Eckert and Mauchly invented ENIAC (Electronic Numerical Integrator and Calculator), the first multipurpose computer,…

John Mauchly

Born: 1907Birthplace: Cincinnati, Ohio ENIAC data translating device—Engineers Eckert and Mauchly invented ENIAC (Electronic Numerical Integrator and Calculator), the first multipurpose computer,…

Joan Crawford

(Lucille Fay Le Sueur)actressBorn: 3/23/1908Birthplace: San Antonio, Texas Academy Award -winning actress whose portrayal of independent women is associated with Hollywood's most glamorous era.…

Nevins, Allan

(Encyclopedia) Nevins, Allan, 1890–1971, American historian, b. Camp Point, Ill. After studying at the Univ. of Illinois, he followed a career in journalism until 1927. Teaching at Columbia from 1928…

Omar Khayyam

(Encyclopedia) Omar KhayyamOmar Khayyamōˈmär [key]Omar Khayyamkīämˈ [key], fl. 11th cent., Persian poet and mathematician, b. Nishapur. He was called Khayyam [tentmaker] probably because of his…