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Dust Bowl

(Encyclopedia)Dust Bowl, the name given to areas of the U.S. prairie states that suffered ecological devastation in the 1930s and then to a lesser extent in the mid-1950s. The problem began during World War I, when...

fallout

(Encyclopedia)fallout, minute particles of radioactive material produced by nuclear explosions (see atomic bomb; hydrogen bomb; Chernobyl) or by discharge from nuclear-power or atomic installations and scattered th...

Ghats

(Encyclopedia)Ghats gŏts [key] [Hindi,=steps], two mountain ranges of S India, paralleling the coasts of the Arabian Sea and the Bay of Bengal and forming two sides of the Deccan plateau. Anai Mudi (8,841 ft/2,695...

Uccello, Paolo

(Encyclopedia)Uccello, Paolo päˈōlō o͞ot-chĕlˈlō [key], c.1396–1475, Florentine painter. Uccello was little appreciated in his own time, and much of his work has been destroyed or is in poor condition. Al...

Gulf Stream

(Encyclopedia)Gulf Stream, warm ocean current of the N Atlantic Ocean, off E North America. It was first described (1513) by Spanish explorer Ponce de León. The Gulf Stream originates in the Gulf of Mexico and, as...

Central American Common Market

(Encyclopedia)Central American Common Market (CACM), trade organization envisioned by a 1960 treaty between Guatemala, Honduras, Nicaragua, and El Salvador. The treaty established (1961) a secretariat for Central A...

pitot static system

(Encyclopedia)pitot static system pētōˈ [key], device for measuring the rate at which a fluid flows. Among the principal applications of the device are an airspeed indicator for aircraft and a distance and speed...

treaty port

(Encyclopedia)treaty port, port opened to foreign trade by a treaty. The term is usually confined to ports in those countries that formerly strongly objected to foreign trade or attempted altogether to exclude it. ...

tariff

(Encyclopedia)tariff, tax on imported and, more rarely, exported goods. It is also called a customs duty. Tariffs may be distinguished from other taxes in that their predominant purpose is not financial but economi...

Citrine, Walter McLennan Citrine, 1st Baron

(Encyclopedia)Citrine, Walter McLennan Citrine, 1st Baron sĭtrēnˈ [key], 1887–1983, English trade union leader. An electrician, he became district secretary of the electrical trade union in 1914 and rose to be...