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Addis Ababa

(Encyclopedia)Addis Ababa ădˈĭs ăbˈəbə [key] [Amharic,=new flower], city (2021 metro. area pop. 5,005,524), capital of Ethiopia. It is situated at c.8,000 ft (2,440 m) on a well-...

glacial periods

(Encyclopedia)glacial periods, times during which large portions of the earth's surface were covered with thick glacial ice sheets. In the Pleistocene epoch, in the Carboniferous and Permian periods of the Paleozoi...

atomic clock

(Encyclopedia)atomic clock, electric or electronic timekeeping device that is controlled by atomic or molecular oscillations. A timekeeping device must contain or be connected to some apparatus that oscillates at a...

Kazan, Elia

(Encyclopedia)Kazan, Elia ĭlīˈə, ēlˈyə kəzănˈ, –zänˈ [key], 1909–2003, American stage and film director, producer, writer, actor, b. Turkey, as Elia Kazanjoglous. Immigrating with his Greek family t...

Kirstein, Lincoln

(Encyclopedia)Kirstein, Lincoln kûrˈstīn, kĭrˈ– [key], 1907–96, American dance and theater executive and writer, b. Rochester, N.Y. One of the most significant figures in 20th cent. American ballet, Kirste...

Ailey, Alvin, Jr.

(Encyclopedia)Ailey, Alvin, Jr. āˈlē [key], 1931–89, American modern dancer and choreographer, b. Rogers, Tex. Ailey studied in Los Angeles with Lester Horton, whose strong, dramatic style and views about mult...

Bausch, Pina

(Encyclopedia)Bausch, Pina pēˈnə boush [key], 1940–2009, German dancer and choreographer. After training with Kurt Jooss, she studied in New York with Antony Tudor, Paul Taylor, José Limón, and Paul Sanasard...

Soyinka, Wole

(Encyclopedia)Soyinka, Wole wōˈlā shôyĭngˈkə [key], 1934–, Nigerian playwright, poet, novelist, essayist, and political activist, born Akinwande Oluwole Soyinka. Educated at the universities of Ibadan and ...

Wren, Sir Christopher

(Encyclopedia)Wren, Sir Christopher, 1632–1723, English architect. A mathematical prodigy, he studied at Oxford. He was professor of astronomy at Gresham College, London, from 1657 to 1661, when he became Savilia...

London, city, England

(Encyclopedia)London, capital of Great Britain, SE England, on both sides of the Thames River. Greater London (1991 pop. 6,378,600), c.620 sq mi (1,610 sq km), consists of the Corporation of the City of London (199...