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frozen foods

(Encyclopedia) frozen foods, products of the food preservation process of freezing. This process has been employed by people in the Arctic from prehistoric times. Eskimos throw fresh-caught fish on…

halo, in meteorology

(Encyclopedia) halo, in meteorology, short-lived circles or arcs, and less commonly spikes and crosses, of colored or whitish light surrounding the moon or sun or in clouds as seen from above. A halo…

Antarctic Peninsula

(Encyclopedia) Antarctic Peninsula, glaciated mountain region of W Antarctica, extending c.1,200 mi (1,930 km) N toward South America. In the south, volcanic peaks rise to c.11,000 ft (3,350 m);…

Antarctica

(Encyclopedia) CE5 AntarcticaAntarcticaăntärkˈtĭkə, –ärˈtĭkə [key], the fifth largest continent, c.5,500,000 sq mi (14,245,000 sq km), asymmetrically centered on the South Pole and almost entirely…

Mer de Glace

(Encyclopedia) Mer de GlaceMer de Glacemĕr də gläs [key] [Fr.,=sea of ice], glacier (3.5 mi/5.6 km long; 16 sq mi/41 sq km), Haute-Savoie dept., E France, on the northern slope of Mont Blanc. It is…

rainmaking

(Encyclopedia) rainmaking, production of rain by artificial means now generally disregarded, though it is probable that rainmaking hastens or increases rainfall from clouds suitable for natural…

snowball earth

(Encyclopedia) snowball earth, hypothesized condition in which the earth was covered completely by ice during several periods in the Proterozoic. The hypothesis was originally developed to explain…

hail, in meteorology

(Encyclopedia) hail, precipitation in the form of pellets composed of ice or of ice and snow, occurring at any time of the year, usually during the passage of a cold front or during a thunderstorm.…

Öraefajökull

(Encyclopedia) ÖraefajökullÖraefajökullöˈrīväyöˌkütəl [key], mountain, Vatnajökull National Park, SE Iceland, rising from the Vatnajökull glacier. Öraefajökull is an ice-covered, three-peaked volcano…

Columbia, river, Canada and the United States

(Encyclopedia) Columbia, river, c.1,210 mi (1,950 km) long, rising in Columbia Lake, SE British Columbia, Canada. It flows first NW in the Rocky Mt. Trench, then hooks sharply about the Selkirk Mts.…