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Natuna Islands

(Encyclopedia)Natuna Islands, island group (2010 pop. 69,300), 769 sq mi (1,993 sq km), Riau prov., Indonesia, in the South China Sea between the Malay Peninsula (W) and Borneo (E). The more than 250 islands are pa...

leaven

(Encyclopedia)leaven lĕvˈən [key], agent used to raise bread or other flour foods. Physical leavens include water vapor, which is released as steam at high temperatures (as in popovers), and air, which is incorp...

Arce Catacora, Luis Alberto

(Encyclopedia)Arce Catacora, Luis Alberto, 1963–, Bolivian government official and political leader. Trained as an economist, Arce held several positions at Bolivia's central bank (1987–2006) before becoming mi...

Kyzyl Kum

(Encyclopedia)Kyzyl Kum or Kizil Kum both: kəzŭlˈ ko͞om [key] [Turk.,=red sand], desert, c.115,000 sq mi (297,900 sq km), in Kazakhstan and Uzbekistan. This vast region SE of the Aral Sea between the Amu Darya ...

Laghouat

(Encyclopedia)Laghouat lägwätˈ [key], town (1998 pop. 96,342), N Algeria, an oasis on the north edge of the Sahara Desert. It is an important administrative and military center and marketplace and is known for r...

potassium carbonate

(Encyclopedia)potassium carbonate, chemical compound, K2CO3, white, crystalline, deliquescent substance that forms a strongly alkaline water solution. It is available commercially as a white, granular powder common...

Williston

(Encyclopedia)Williston, city (1990 pop. 13,131), seat of Williams co., NW N.Dak., on the Missouri River; inc. 1904. An early riverboating town, its importance increased with the arrival of the Great Northern Railw...

Westinghouse, George

(Encyclopedia)Westinghouse, George, 1846–1914, American inventor and manufacturer, b. Central Bridge, N.Y. In the Civil War he served in the Union army and navy. Among his inventions in the railroad field were a ...

Bolkiah Mu'izzadin Waddaulah, Sir Hassanal

(Encyclopedia)Bolkiah Mu'izzadin Waddaulah, Sir Hassanal, 1946–, sultan of Brunei (1967–). He succeeded to the throne after the abdication of his father, Sultan Sir Omar Ali Saifuddin. Known as a playboy, he no...

Rogers, Henry Huttleston

(Encyclopedia)Rogers, Henry Huttleston, 1840–1909, American financier, b. Fairhaven, Mass. After he moved (1860) to Pennsylvania, he entered the oil business, experimented in the refining of petroleum, and, in pa...