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copperhead

(Encyclopedia)copperhead, poisonous snake, Ancistrodon contortrix, of the E United States. Like its close relative, the water moccasin, the copperhead is a member of the pit viper family and detects its warm-bloode...

Nimeiri, Muhammed Jaafar al-

(Encyclopedia)Nimeiri or Nimeiry, Muhammed Jaafar al- mo͞ohämˈmäd jäfärˈ äl-nĭmārˈē [key], 1930–, Sudanese army officer and politician. Early active in the Sudanese nationalist movement, he was tempor...

Darrow, Clarence Seward

(Encyclopedia)Darrow, Clarence Seward, 1857–1938, American lawyer, b. Kinsman, Ohio. He first practiced law in Ashtabula, Ohio. In 1887 he moved to Chicago, where he was corporation counsel for several years and ...

nuclear strategy

(Encyclopedia)nuclear strategy, a policy for the use of nuclear weapons. The first atomic bombs were used in the context of the Allies' World War II policy of strategic bombing. Early in the cold war, U.S. policy w...

fault

(Encyclopedia)CE5 Types of faults fault, in geology, fracture in the earth's crust in which the rock on one side of the fracture has measurable movement in relation to the rock on the other side. Faults on othe...

Molly Maguires

(Encyclopedia)Molly Maguires məgwīˈərz [key], secret organization of Irish-Americans in the coal-mining districts of Pennsylvania. Its name came from a woman who led an extralegal, antilandlord organization in ...

Hart, Oliver Simon D'Arcy

(Encyclopedia)Hart, Oliver Simon D'Arcy, 1948–, British-American economist, b. London, England, Ph.D. Princeton, 1974. He has been a professor at the London School of Economics (1981–85), the Massachusetts Inst...

Sacramento, river, United States

(Encyclopedia)Sacramento, longest river of Calif., c.380 mi (610 km) long, rising near Mt. Shasta, N Calif., and flowing generally SW to Suisun Bay, an arm of San Francisco Bay, where it forms a large delta with th...

San Andreas fault

(Encyclopedia)San Andreas fault, great fracture (see fault) of the earth's crust in California. It is the principal fault of an intricate network of faults extending more than 600 mi (965 km) from NW California to ...

thresher shark

(Encyclopedia)thresher shark, long-tailed, warm-water shark, genus Alopias. The upper fork of its tail is slender and sickle-shaped and is about equal in length to the rest of the body. This shark uses its tail str...