Columbia Encyclopedia

(Encyclopedia) horse chestnut, common name for some members of the Hippocastanaceae, a family of trees and shrubs of the north temperate zones and of South America. The horse chestnut tree, Aesculus hippocastanum, a...

(Encyclopedia) hantavirus, any of a genus (Hantavirus) of single-stranded RNA viruses that are carried by rodents and transmitted to humans when they inhale vapors from contaminated rodent urine, saliva, or feces. T...

(Encyclopedia) United Mine Workers of America (UMW), international labor union formed (1890) by the amalgamation of the National Progressive Union (organized 1888) and the mine locals under the Knights of Labor. It ...

(Encyclopedia) North Providence, town (1990 pop. 32,090), Providence co., NE R.I.; set off from Providence and inc. 1765. Once a large textile town, it is now mainly a residential suburb. A major portion of Rhode Is...

(Encyclopedia) Jesuit Relations, annual reports and narratives written by French Jesuit missionaries at their stations in New France (America) between 1632 and 1673. They are invaluable as historical sources for Fre...

(Encyclopedia) North Platte project, unit of the U.S. Bureau of Reclamation, in the North Platte River valley, W Nebr. and E Wyo. It supplies hydroelectric power to many towns and industries and provides irrigation ...

(Encyclopedia) Devils Tower National Monument, 1,347 acres (546 hectares), overlooking the Belle Fourche River, NE Wyo.; it was the first designated U.S. national monument (1906). Devils Tower, 865 ft (264 m) high a...

(Encyclopedia) couvade ko͞ovädˈ [key], imitation by the father of many of the concomitants of childbirth, at the time of his wife's parturition. The father may retire into seclusion as well as observe various tab...

(Encyclopedia) North Rhine–Westphalia nôrtˈrīn-vĕstˌfäˈlən [key], state (1994 pop. 17,759,000), 13,111 sq mi (33,957 sq km), W central Germany. Düsseldorf is the capital. The state is bounded by Belgium a...

(Encyclopedia) North American Free Trade Agreement (NAFTA), accord establishing a free-trade zone in North America; it was signed in 1992 by Canada, Mexico, and the United States and took effect on Jan. 1, 1994. NAF...