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polar bear

(Encyclopedia)polar bear, large white bear, Ursus maritimus, formerly Thalarctos maritimus, of the coasts of arctic North America, Asia, and Europe. Polar bears usually live on drifting pack ice, but sometimes wand...

Nordenskjöld, Nils Adolf Erik, Baron

(Encyclopedia)Nordenskjöld, Nils Adolf Erik, Baron nĭls äˈdôlf āˈrĭk no͞orˈdənshöld [key], 1832–1901, Swedish geologist and arctic explorer, first to navigate the Northeast Passage, b. Finland. He ser...

Ketchikan

(Encyclopedia)Ketchikan kĕˈchĭkănˌ [key], city (1990 pop. 8,263), SE Alaska, a port of entry on Revillagigedo Island in the Alexander Archipelago. A supply point for miners in the gold rush of the 1890s, it ha...

Skagway

(Encyclopedia)Skagway skăgˈwāˌ [key], city (1990 pop. 692), Skagway-Yakutat census div., SE Alaska, in the Panhandle, at the head of Lynn Canal; founded 1897. It is an ice-free port of entry; a trade and touris...

Grundtvig, Nikolai Frederik Severin

(Encyclopedia)Grundtvig, Nikolai Frederik Severin nĭkōlīˈ frĭᵺˈərĭk sĕvərēnˈ gro͝ontˈvĭg [key], 1783–1872, Danish educator, minister, and writer, founder of the Danish folk high school. He came i...

Gezer

(Encyclopedia)Gezer gēˈzər [key], ancient city of Canaan, on the coastal plain of Sharon, NW of Jerusalem. Its position guarding the road from Jerusalem to Jaffa has always given it importance, e.g., in the wars...

ring, in astronomy

(Encyclopedia)ring, in astronomy, relatively thin band of rocks and dust and ice particles that orbit around a planet in the planet's equatorial plane. All four of the giant planets in the solar system—Jupiter, S...

Greenland Sea

(Encyclopedia)Greenland Sea, arm of the Arctic Ocean, off the northeast coast of Greenland between Svalbard and Jan Mayen Island. It is the main outlet of the Arctic Ocean to the Atlantic. Because of drifting arcti...

sublimation, in chemistry

(Encyclopedia)sublimation sŭblĭmāˈshən [key], change of a solid substance directly to a vapor without first passing through the liquid state. The term is also used to describe the reverse process of the gas ch...

Nansen, Fridtjof

(Encyclopedia)Nansen, Fridtjof frĭtˈyôf nänˈsən [key], 1861–1930, Norwegian arctic explorer, scientist, statesman, and humanitarian. The diversity of Nansen's interests is shown in his writings, which inclu...