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Caventou, Joseph Bienaimé

(Encyclopedia)Caventou, Joseph Bienaimé zhôzĕfˈ byăNnāmāˈ käväNto͞oˈ [key], 1795–1877, French chemist. He was professor at the École de Pharmacie, Paris. With P. J. Pelletier he isolated quinine (fro...

Farmer, Paul

(Encyclopedia)Farmer, Paul (Paul Edward Farmer), 1959–2022; American infectious disease doctor and medical anthropologist, b. North Adams, Mass., M.D. and Ph.D. Har...

Mexico, state, Mexico

(Encyclopedia)Mexico, Span. México or Méjico, state (1990 pop. 9,815,795), 8,286 sq mi (21,461 sq km), S central Mexico. Toluca is the capital. The northern section of the state, containing most of the Valley of ...

Black Hills

(Encyclopedia)Black Hills, rugged mountains, c.6,000 sq mi (15,540 sq km), enclosed by the Belle Fourche and Cheyenne rivers, SW S.Dak. and NE Wyo., and rising c.2,500 ft (760 m) above the surrounding Great Plains;...

Tsien, Roger Yonchien

(Encyclopedia)Tsien, Roger Yonchien, 1952–2016, American biochemist, b. New York City, Ph.D. Cambridge, 1977. Tsien was a researcher at Cambridge (1977–81) and a professor at the Univ. of California, Berkeley (...

sandstone

(Encyclopedia)sandstone, sedimentary rock formed by the cementing together of grains of sand. The usual cementing material in sandstone is calcium carbonate, iron oxides, or silica, and the hardness of sandstone va...

Pátzcuaro

(Encyclopedia)Pátzcuaro pätˈskwärō [key], lake, c.100 sq mi (260 sq km) Michoacán state, W Mexico. Its indented shores, dotted with Tarascan villages, green islands, and the curious native sailboats help make...

Campbell, John

(Encyclopedia)Campbell, John, 1653–1728, American editor, b. Scotland. After emigrating to Boston, he was postmaster of the city from 1702 to 1718 and wrote newsletters for regular patrons. In 1704 he started pri...

Verde, Cape

(Encyclopedia)Verde, Cape vûrd [key] [Port.,=green], Fr. Cap Vert, peninsula, extending into the Atlantic Ocean, W Senegal; the westernmost point of Africa. Dakar is located there. The cape was discovered by the P...

Connemara

(Encyclopedia)Connemara kŏnəmärˈə [key], wild, mountainous region, Co. Galway, W Republic of Ireland, lying between the Atlantic Ocean and Loughs Corrib and Mask. Many mountains, lakes, streams, and glens help...