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viaduct

(Encyclopedia)viaduct vīˈədŭktˌ [key] [Lat.,=road conveyor], type of bridge for carrying a highway or railroad over a valley, over low ground, or over a road. It is commonly constructed in the form of several ...

Gold Butte National Monument

(Encyclopedia)Gold Butte National Monument, 296,937 acres (90,506 hectares), SE Utah, est. 2016 and managed by the Bureau of Land Management. Named for a mining ghost town, the monument embraces a rugged desert lan...

Greeley

(Encyclopedia)Greeley, city (2020 pop. 108,795), seat of Weld co., N Colo., at the base of the Front Range of the Rocky Mts.; inc. 1885. It is a rail and trade center...

Gatún Lake

(Encyclopedia)Gatún Lake gäto͞onˈ [key], artificial lake, 163 sq mi (422 sq km), Colón Prov., Panama, formed by the impounding of the Chagres River. Gatún Dam (completed 1912), 11⁄2 mi (2.4 km) long and 115...

Cech, Thomas Robert

(Encyclopedia)Cech, Thomas Robert chĕk [key], 1947–, American microbiologist, b. Chicago, grad. Univ. of California, Berkeley. A professor at the Univ. of Colorado, he discovered that RNA could function as enzym...

Black Canyon of the Gunnison National Park

(Encyclopedia)Black Canyon of the Gunnison National Park, 30,300 acres (12,272 hectares), W central Colorado, in the Rocky Mts. The park embraces the most spectacular stretch of the 53-mi (85-km) long Black Canyon,...

Ocala

(Encyclopedia)Ocala ōkălˈə [key], city (1990 pop. 42,045), seat of Marion co., N central Fla.; inc. 1868. It is a trade and processing center for citrus fruit, vegetables, and truck farm goods. The surrounding ...

Muses

(Encyclopedia)Muses, in Greek religion and mythology, patron goddesses of the arts, daughters of Zeus and Mnemosyne. Originally only three, they were later considered as nine. Calliope was the Muse of epic poetry a...

Shasta, Mount

(Encyclopedia)Shasta, Mount shăsˈtə [key], volcanic peak, 14,162 ft (4,317 m) high, N Calif., in the Cascade Range. Visited c.1827 by Peter Skene Ogden, a British fur trader and explorer, Mt. Shasta has long bee...

Onondaga Lake

(Encyclopedia)Onondaga Lake ŏnəndäˈgə, –dôˈ– [key], brackish lake, 5 mi (8 km) long and 1 mi (1.6 km) wide, central N.Y., NW of Syracuse. In 1654, Father LeMoyne, a missionary, was taken to salt springs ...