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stem cells

(Encyclopedia)stem cells, unspecialized human or animal cells that can produce mature specialized body cells and at the same time replicate themselves. Embryonic stem cells are derived from a blastocyst (the blastu...

Hersh, Seymour Myron

(Encyclopedia)Hersh, Seymour Myron, 1937–, American investigative journalist, b. Chicago, grad. Univ. of Chicago (1958). He began his career (1959) at a local news bureau, then became a wire service correspondent...

mangrove

(Encyclopedia)mangrove, large tropical evergreen tree, genus Rhizophora, that grows on muddy tidal flats and along protected ocean shorelines. Mangroves are most abundant in tropical Asia, Africa, and the islands o...

bushbuck

(Encyclopedia)bushbuck, either of two small, delicate, spiral-horned antelopes of sub-Saharan Africa, the imbabala (Tragelaphus sylvaticus) and the kéwel (T. scriptus), formerly classified as a single species. Bus...

Zoellick, Robert Bruce

(Encyclopedia)Zoellick, Robert Bruce zĕlˈlĭk [key], 1953–, U.S. government official and finance executive, b. Evergreen Park, Ill., grad. Swarthmore College (B.A., 1975), Harvard (J.D., M.P.P. 1981). As an ass...

Schwarzenegger, Arnold Alois

(Encyclopedia)Schwarzenegger, Arnold Alois, 1947–, Austrian-American actor, bodybuilder, and politician, b. Thal, Austria. He began competing in bodybuilding contests in his teens, and won his first of five Mr. U...

Hare, Sir David

(Encyclopedia)Hare, Sir David, 1947–, British playwright. Hare is a prominent member of the British theatrical left. A founder of the Portable Theatre and the Joint Stock, he became resident dramatist at the Roya...

Pacific Remote Islands Marine National Monument

(Encyclopedia)Pacific Remote Islands Marine National Monument, c.490,000 sq mi (1,260,000 sq km), central Pacific Ocean; est. 2009. The monument comprises the waters and reefs surrounding seven islands and atolls, ...

Roe v. Wade

(Encyclopedia)Roe v. Wade, case decided in 1973 by the U.S. Supreme Court. Along with Doe v. Bolton, this decision legalized abortion in the first trimester of ...

ElBaradei, Mohamed

(Encyclopedia)ElBaradei, Mohamed ĕlbäräˈdā [key], 1942–, Egyptian lawyer and United Nations diplomat, b. Cairo, grad. Univ. of Cairo (1962), New York Univ. School of Law (1974). He worked (1964–80) in the ...