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Luray

(Encyclopedia)Luray lo͝orāˈ [key], town (1990 pop. 4,587), seat of Page co., N Va., in the Shenandoah valley, in a farm area; inc. 1812. There is light manufacturing and the town is the headquarters of Shenandoa...

Churchill Falls

(Encyclopedia)Churchill Falls, waterfalls of the upper Churchill River, 245 ft (75 m) high, SW Labrador, N.L., Canada; known as Grand Falls until renamed (1965) in honor of Sir Winston Churchill. The falls were fir...

badlands

(Encyclopedia)badlands, area of severe erosion, usually found in semiarid climates and characterized by countless gullies, steep ridges, and sparse vegetation. Badland topography is formed on poorly cemented sedime...

Gilbert

(Encyclopedia)Gilbert, city (2020 pop. 267,918), Maricopa co. S central Ariz., suburb of Phoenix, located S of Mesa and E of Chandler; inc. 1920. Founded at the site ...

Rapid City

(Encyclopedia)Rapid City, city (1990 pop. 54,523), seat of Pennington co., SW S.Dak., on Rapid Creek, in an irrigated farm region served by the Bureau of Reclamation's Rapid Valley project; founded 1876 after the d...

Phoenix, city, United States

(Encyclopedia)Phoenix, city (1990 pop. 983,403), state capital and seat of Maricopa co., S Ariz., on the Salt River; inc. 1881. It is the largest city in Arizona, the hub of the rich agricultural region of the Salt...

Cascade Range

(Encyclopedia)Cascade Range, mountain chain, c.700 mi (1,130 km) long, extending S from British Columbia to N Calif., where it becomes the Sierra Nevada; it parallels the Coast Ranges, 100–150 mi (161–241 km) i...

sequoia

(Encyclopedia)sequoia sĭkwoiˈə [key], name for the redwood (Sequoia sempervirens) and for the big tree, or giant sequoia (Sequoiadendron giganteum), both huge, coniferous evergreen trees of the bald cypress fami...

environmentalism

(Encyclopedia)environmentalism, movement to protect the quality and continuity of life through conservation of natural resources, prevention of pollution, and control of land use. The philosophical foundations for ...

Twin Falls

(Encyclopedia)Twin Falls, city (1990 pop. 27,591), seat of Twin Falls co., S Idaho, in the Snake River valley; inc. 1905. The city began as a center of a private irrigation project, which is supplemented by the Min...