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permafrost

(Encyclopedia)permafrost, permanently frozen soil, subsoil, or other deposit, characteristic of arctic and some subarctic regions; similar conditions are also found at very high altitudes in mountain ranges. In 196...

mutiny

(Encyclopedia)mutiny, concerted disobedient or seditious action by persons in military or naval service, or by sailors on commercial vessels. Mutiny may range from a combined refusal to obey orders to active revolt...

Churchill, rivers, Canada

(Encyclopedia)Churchill. 1 River, c.600 mi (970 km) long, issuing as the Ashuanipi River from Ashuanipi Lake, SW Labrador, N.L., Canada, and flowing in an arc north, then southeast through a series of lakes to Chur...

Pilgrims

(Encyclopedia)Pilgrims, in American history, the group of separatists and other individuals who were the founders of Plymouth Colony. The name Pilgrim Fathers is given to those members who made the first crossing o...

Parry, Sir William Edward

(Encyclopedia)Parry, Sir William Edward păˈrē [key], 1790–1855, British arctic explorer and rear admiral. He entered the navy at 13 and made his first voyage to the Arctic under Sir John Ross in 1818 in search...

Carroll, John

(Encyclopedia)Carroll, John, 1735–1815, American Roman Catholic churchman, b. Maryland. He studied as a child with Jesuits at Bohemia, Md., and later at Saint-Omer in Flanders, since Catholic secondary education ...

charter school

(Encyclopedia)charter school, alternative type of American public school that, while paid for by taxes, is independent of the public-school system and relatively free from state and local regulations. A charter sch...

extinction

(Encyclopedia)extinction, in biology, disappearance of species of living organisms. Extinction usually occurs as a result of changed conditions to which the species is not suited. If no member of the affected speci...

Montcalm, Louis Joseph de

(Encyclopedia)Montcalm, Louis Joseph de mŏntkämˈ, Fr. lwē zhôzĕfˈ də môNkälmˈ [key], 1712–59, French general. His name in fuller form was Louis Joseph de Montcalm-Gozon, marquis de Saint-Véran. A vete...

Marquesas Islands

(Encyclopedia)Marquesas Islands märkāˈsäs [key], volcanic group (2002 pop. 8,712), South Pacific, a part of French Polynesia. There are 12 islands in the group, which lies c.930 mi (1,500 km) NE of Tahiti. The ...