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Walker, Alice

(Encyclopedia)Walker, Alice, 1944–, African-American novelist and poet, b. Eatonon, Ga. The daughter of sharecroppers, she studied at Spelman College (1961–63) and Sarah Lawrence College (B.A., 1965). She bring...

Adler, Larry

(Encyclopedia)Adler, Larry (Lawrence Cecil Adler) ădˈlər [key], 1914–2001, American harmonica player, b. Baltimore. Adler, whose career spanned seven decades, is generally credited with elevating the harmonica...

booby

(Encyclopedia)booby, common name for some members of the family Sulidae, large, streamlined sea birds. Tropical and subtropical members of the family are called boobies; those of northern waters are called gannets....

North America

(Encyclopedia)CE5 North America, third largest continent (2015 est. pop. 571,949,000), c.9,400,000 sq mi (24,346,000 sq km), the northern of the two continents of the Western Hemisphere. North America includes a...

radon

(Encyclopedia)radon rāˈdŏn [key], gaseous radioactive chemical element; symbol Rn; at. no. 86; mass no. of most stable isotope 222; m.p. about −71℃; b.p. −61.8℃; density 9.73 grams per liter at STP; vale...

Scouts

(Encyclopedia)Scouts or Boy Scouts, organization of boys and girls 11 to 17 years old, founded (1907) in Great Britain by Sir Robert (later Lord) Baden-Powell and originally for boys only; since the late 20th cent....

proton

(Encyclopedia)proton, elementary particle having a single positive electrical charge and constituting the nucleus of the ordinary hydrogen atom. The positive charge of the nucleus of any atom is due to its protons....

bipolar disorder

(Encyclopedia)bipolar disorder, formerly manic-depressive disorder or manic-depression, severe mental disorder involving manic episodes that are usually accompanied by episodes of depression. The term “manic-depr...

New Castle

(Encyclopedia)New Castle. 1 City (1990 pop. 4,837), New Castle co., N Del., on the Delaware River. Mineral, metal, food, paper, and gypsum products are among its varied manufactures. It is also a major book distrib...

Levine, James

(Encyclopedia)Levine, James Lawrence, 1943–2021, American conductor, b. Cincinnati, Ohio. . Levine’s parents were both performers; his father had been a bandleade...