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baby boom

(Encyclopedia)baby boom, a period in which the birthrate is significantly higher than in other periods, especially the post–World War II period in the United States, Canada, Australia, and New Zealand. In the Uni...

avalanche

(Encyclopedia)avalanche, rapidly descending large mass of snow, ice, soil, rock, or mixtures of these materials, sliding or falling in response to the force of gravity. Avalanches, which are natural forms of erosio...

Kermanshah

(Encyclopedia)Kermanshah kĕrmänˌshäˈ [key], city (1991 pop. 624,084), capital of Kermanshah prov., W Iran. It is the trade center for a rich agricultural region that produces grain, rice, vegetables, fruits, a...

Francken

(Encyclopedia)Francken frängk [key], family of Flemish painters in the 16th and 17th cent. Prominent members were Hieronymus Francken, c.1540–1610, student of Frans Floris, who worked mainly in Antwerp in a clas...

Dayr az Zawr

(Encyclopedia)Dayr az Zawr –ĕz– [key], town, capital of Dayr az Zawr governorate, E Syria, on the Euph...

Dutton, Clarence Edward

(Encyclopedia)Dutton, Clarence Edward, 1841–1912, American geologist, b. Wallingford, Conn., grad. Yale, 1860. After service in the army during and after the Civil War, he was a member (1875–91) of the U.S. Geo...

Pinnacles National Park

(Encyclopedia)Pinnacles National Park, c.26,000 acres (10,500 hectares), in the Gabilan Mts. of the Coast Ranges, W central Calif.; est. as a national monument 1980, designated a national park 2013. Pinnacles featu...

Werner, Abraham Gottlob

(Encyclopedia)Werner, Abraham Gottlob äˈbrähäm gôtˈlōp vĕrˈnər [key], 1750–1817, German geologist. In 1775 he became inspector and teacher in the mining academy at Freiberg, which through his efforts be...

Wallace, Henry Cantwell

(Encyclopedia)Wallace, Henry Cantwell, 1866–1924, American agricultural leader and cabinet officer, b. Rock Island, Ill., grad. Iowa State College of Agriculture (now Iowa State Univ.), 1892; son of Henry Wallace...

pigeon

(Encyclopedia)pigeon, common name for members of the large family Columbidae, land birds, cosmopolitan in temperate and tropical regions, characterized by stout bodies, short necks, small heads, and thick, heavy pl...