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Black Hawk War

(Encyclopedia)Black Hawk War, conflict between the Sac and Fox and the United States in 1832. After the War of 1812, whites settling the Illinois country exerted pressure on the Native Americans. A treaty of 1804, ...

sting

(Encyclopedia)sting, in zoology, organ found in bees, many wasps, some ants, and in scorpions and sting rays, used defensively as well as to kill or paralyze prey. In the bee and the wasp the venom is produced by g...

school vouchers

(Encyclopedia)school vouchers, government grants aimed at improving education for the children of low-income families by providing school tuition that can be used at public or private schools. The idea behind schoo...

carbonated beverage

(Encyclopedia)carbonated beverage, an effervescent drink that releases carbon dioxide under conditions of normal atmospheric pressure. Carbonation may occur naturally in spring water that has absorbed carbon dioxid...

quinine

(Encyclopedia)quinine kwīˈnīnˌ, kwĭnēnˈ [key], white crystalline alkaloid with a bitter taste. Before the development of more effective synthetic drugs such as quinacrine, chloroquine, and primaquine, quinin...

Ramaphosa, Cyril

(Encyclopedia)Ramaphosa, Cyril (Matamela Cyril Ramaphosa), 1952–, South African political leader, b. Johannesburg. A lawyer, he became involved in the antiapartheid Black Consciousness Movement while a university...

rhythm, biological

(Encyclopedia)rhythm, biological, or biorhythm, cyclic pattern of physiological changes or changes in activity in living organisms, most often synchronized with daily, monthly, or annual cyclical changes in the env...

first aid

(Encyclopedia)first aid, immediate and temporary treatment of a victim of sudden illness or injury while awaiting the arrival of medical aid. Proper early measures may be instrumental in saving life and ensuring a ...

DeLay, Tom

(Encyclopedia)DeLay, Tom (Thomas Dale DeLay), 1947–, American politician, b. Laredo, Tex., grad. Univ. of Houston (B.S., 1970). A conservative Republican businessman, he entered politics (1979) as a Texas state l...

dream

(Encyclopedia)dream, mental activity associated with the rapid-eye-movement (REM) period of sleep. It is commonly made up of a number of visual images, scenes or thoughts expressed in terms of seeing rather than in...