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Bering Strait

(Encyclopedia)Bering Strait, c.55 mi (90 km) wide, between extreme NE Asia and extreme NW North America, connecting the Arctic Ocean and the Bering Sea. It is usually completely frozen over from October to June. Th...

Salton Sea

(Encyclopedia)Salton Sea sôlˈtən [key], saline lake, 370 sq mi (958 sq km), northern part of the Imperial Valley, SE Calif.; 232 ft (71 m) below sea level. The area was anciently the northern part of the Gulf of...

fossil

(Encyclopedia)fossil, remains or imprints of plants or animals preserved from prehistoric times by the operation of natural conditions. Fossils are found in sedimentary rock, asphalt deposits, and coal and sometime...

skating

(Encyclopedia)skating: see ice skating; ice dancing; roller skating. ...

winter sports

(Encyclopedia)winter sports: see bobsledding; curling; hockey, ice; ice dancing; ice skating; skiing; snowshoes; tobogganing. ...

Vadsø

(Encyclopedia)Vadsø vädˈsö [key], town (1995 pop. 6,410), capital of Finnmark co., NE Norway, an ice-free arctic port on the Varangerfjord. It is a fishing and fish-processing center and a trade center for rein...

Mars, in astronomy

(Encyclopedia)Mars, in astronomy, 4th planet from the sun, with an orbit next in order beyond that of the earth. Mars has two natural satellites, discovered by Asaph Hall in 1877. The innermost of these, Phobos...

Issyk-Kol

(Encyclopedia)Issyk-Kol or Ysyk Köl both: ēsĭkˈ-ko͞ol [key], lake, E Kyrgyzstan, in the Alatau Mts. At an altitude of c.5,300 ft (1,620 m) and with an area of c.2,400 sq mi (6,220 sq km), it is one of the larg...

Greenland

(Encyclopedia)Greenland, Green. Kalaallit Nunaat, Dan. Grønland, the largest island in the world (2015 est. pop. 56,000), 836,109 sq mi (2,166,086 sq km), self-governing overseas administrative division of Denmark...

Ordovician period

(Encyclopedia)Ordovician period ôrdəvĭshˈən [key] [from the Ordovices, ancient tribe of N Wales], second period of the Paleozoic era of geologic time (see Geologic Timescale, tablegeologic timescale, table) fr...