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Dewey, John

(Encyclopedia) Dewey, John, 1859–1952, American philosopher and educator, b. Burlington, Vt., grad. Univ. of Vermont, 1879, Ph.D. Johns Hopkins, 1884. He taught at the universities of Minnesota (1888…

Ribaut, Jean

(Encyclopedia) Ribaut or Ribault, JeanRibaut or Ribault, Jeanboth: zhäN rēbōˈ [key], c.1520–65, French mariner and colonizer in Florida, b. Dieppe. When Gaspard de Coligny decided to plant a French…

sleep

(Encyclopedia) sleep, resting state in which an individual becomes relatively quiescent and relatively unaware of the environment. During sleep, which is in part a period of rest and relaxation, most…

Tulsa Race Massacre of 1921

(Encyclopedia) TulsThunberga race massacre, Greenwood, Okla., May 31 to June 1, 1921. On the evening of May 31, 1921, a white lynch mob gathered…

smoking

(Encyclopedia) smoking, inhalation and exhalation of the fumes of burning tobacco in cigars and cigarettes and pipes; in the 21st cent., vaping, the similar use of e-cigarettes, also has become…

Coronado, Francisco Vásquez de

(Encyclopedia) Coronado, Francisco Vásquez deCoronado, Francisco Vásquez defränthēsˈkō väsˈkāth dā kōrōnäˈᵺō [key], c.1510–1554, Spanish explorer. He went to Mexico with Viceroy Antonio de Mendoza…

genetic testing

(Encyclopedia) genetic testing, medical screening for genetic disorders, by examining either a person's DNA directly or a person's biochemistry or chromosomes for indirect evidence. Testing may be…

Rwanda

(Encyclopedia) CE5 RwandaRwandar&oobreve;änˈdä [key], officially Republic of Rwanda, republic (2015 est. pop. 11,630,000), 10,169 sq mi (26,338 sq km), E central Africa. It borders on Congo (…

National Labor Relations Board

(Encyclopedia) National Labor Relations Board (NLRB), independent agency of the U.S. government created under the National Labor Relations Act of 1935 (Wagner Act), and amended by the acts of 1947 (…

London Company

(Encyclopedia) London Company, corporation composed of stockholders residing in and about London, which, together with the Plymouth Company (see Virginia Company), was granted (1606) a charter by…