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Saffir-Simpson scale

(Encyclopedia)Saffir-Simpson scale săfˈər– [key], standard scale for rating the severity of hurricanes as a measure of the damage they cause; it is based on observations of numerous North Atlantic Basin hurric...

snow line

(Encyclopedia)snow line, altitude above which or latitude beyond which snow does not melt in summer (usually called the permanent snow line), or, in winter, the line to which snow extends at a given point in time. ...

Rusk, Dean

(Encyclopedia)Rusk, Dean (David Dean Rusk), 1909–94, U.S. secretary of state (1961–69), b. Cherokee co., Ga. After teaching (1934–40) and serving in World War II, he entered (1946) the Dept. of State. In 1950...

Sahara

(Encyclopedia)Sahara səhârˈə [key] [Arab.,=desert], world's largest desert, c.3,500,000 sq mi (9,065,000 sq km), N Africa; the western part of a great arid zone that continues into SW Asia. Extending more than ...

monsoon

(Encyclopedia)monsoon mŏnso͞on [key] [Arab., mausium=season], wind that changes direction with change of season, notably in India and SE Asia. To a lesser degree, monsoonal winds also develop in portions of all o...

Lot, river, France

(Encyclopedia)Lot, river, c.300 mi (483 km) long, rising in the Cévennes Mts., SE France, and flowing W past Mende and Cahors to join the Garonne River. The limestone plateaus through which the Lot winds are inter...

jet stream

(Encyclopedia)jet stream, narrow, swift currents or tubes of air found at heights ranging from 7 to 8 mi (11.3–12.9 km) above the surface of the earth. They are caused by great temperature differences between adj...

Trojan War

(Encyclopedia)Trojan War, in Greek mythology, war between the Greeks and the people of Troy. The strife began after the Trojan prince Paris abducted Helen, wife of Menelaus of Sparta. When Menelaus demanded her ret...

storm

(Encyclopedia)storm, disturbance of the ordinary conditions of the atmosphere attended by wind, rain, snow, sleet, hail, or thunder and lightning. Types of storms include the extratropical cyclone, the common, larg...

Olenek

(Encyclopedia)Olenek əlyĭnyôkˈ [key], river, c.1,350 mi (2,200 km) long, rising in the central Siberian plateau, Krasnoyarsk Territory, E Siberian Russia. It winds E then N through NW Sakha Republic to the Lapt...