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topaz

(Encyclopedia)topaz tōˈpăz [key], aluminum silicate mineral with either hydroxyl radicals or fluorine, Al2SiO4(F,OH)2, used as a gem. It is commonly colorless or some shade of pale yellow to wine-yellow; pale bl...

sanitary science

(Encyclopedia)sanitary science, principles of health preservation, embracing hygiene, on an individual level, and public health, on a communal level. Those who specialize in sanitary science are sanitary engineers....

Casablanca

(Encyclopedia)Casablanca kăˌsəblăngˈkə, kăˌzə–, Span. käˌsäblängˈkä [key], Arab. Dar-al-Baida, city (1994 est. pop. 2,940,623), W Morocco, on the Atlantic Ocean. The largest city and principal port...

International Criminal Court

(Encyclopedia)International Criminal Court (ICC), first permanent world court created specifically to try individuals for genocide, war crimes, crimes of aggression, and crimes against humanity, est. 2002; located ...

terrorism

(Encyclopedia)terrorism, the threat or use of violence, often against the civilian population, to achieve political or social ends, to intimidate opponents, or to publicize grievances. The term dates from the Reign...

Crenshaw, Kimberlé Williams

(Encyclopedia)Crenshaw, Kimberlé, 1959–, American legal scholar and critical race theorist, b. Canton, Ohio, J.D. Harvard University, 1984. An influential writer o...

Iran-Iraq War

(Encyclopedia)Iran-Iraq War, 1980–88, protracted military conflict between Iran and Iraq. It officially began on Sept. 22, 1980, with an Iraqi land and air invasion of western Iran, although Iraqi spokespersons m...

National Aeronautics and Space Administration

(Encyclopedia)National Aeronautics and Space Administration (NASA), civilian agency of the U.S. federal government with the mission of conducting research and developing operational programs in the areas of space e...

Islamic art and architecture

(Encyclopedia)Islamic art and architecture, works of art and architecture created in countries where Islam has been dominant and embodying Muslim precepts in its themes. Among the ceramic types are unglazed wares...

Somalia

(Encyclopedia)CE5 Somalia sōmäˈleə [key], officially Federal Republic of Somalia, country (2015 est. pop. 10,616,000), 246,200 sq mi (637,657 sq km), extreme E Africa. It is directly south of the Arabian pen...