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Dumont d'Urville, Jules Sébastien César

(Encyclopedia)Dumont d'Urville, Jules Sébastien César zhül sābästyăNˈ sāzärˈ dümôNˈ dürvēlˈ [key], 1790–1842, French navigator. While on duty (1819–20) in the E Mediterranean, he saw and recogni...

Ellesmere Island

(Encyclopedia)Ellesmere Island, 82,119 sq mi (212,688 sq km), c.500 mi (800 km) long, in the Arctic Ocean, N Nunavut Territory, Canada; second largest and northernmost island of the Arctic Archipelago. It is separa...

heatstroke

(Encyclopedia)heatstroke, profound disturbance of the heat-regulating mechanism of the body, also known as sunstroke. It is characterized by extremely high body temperatures and sometimes by convulsions and coma. T...

Louisburg

(Encyclopedia)Louisburg lo͞oˈĭsbərgˌ [key], town (1991 pop. 1,261), E Cape Breton Island, N.S., Canada. The town, an ice-free port, is near the site of the great fortress of Louisbourg, built (1720–40) by Fr...

Klaipeda

(Encyclopedia)Klaipeda māˈməl [key], city (1993 pop. 206,400), W Lithuania, on the Baltic Sea, at the entrance to the Courland Lagoon. An ice-free seaport and an industrial center, it has shipyards and industrie...

Boucher de Crèvecœur de Perthes, Jacques

(Encyclopedia)Boucher de Crèvecœur de Perthes, Jacques də krĕvkörˈ də pĕrt [key], 1788–1868, French writer and archaeologist. He was the first to provide evidence that humans had existed in the Pleistocen...

Sverdrup, Otto

(Encyclopedia)Sverdrup, Otto svĕrˈdro͝op [key], 1855–1930, Norwegian arctic explorer. A companion of Fridtjof Nansen on the voyage across Greenland in 1888 and on Nansen's later (1893–96) polar expedition, ...

Tippett, Sir Michael

(Encyclopedia)Tippett, Sir Michael, 1905–98, English composer, b. London. Tippett studied at the Royal College of Music. During World War II he was briefly imprisoned as a conscientious objector. His strongly hel...

Rhea, in astronomy

(Encyclopedia)Rhea, in astronomy, one of the named moons, or natural satellites, of Saturn. Also known as Saturn V (or S5), Rhea is 950 mi (1530 km) in diameter, orbits Saturn at a mean distance of 327,487 mi (527,...

Deep Sea Drilling Project

(Encyclopedia)Deep Sea Drilling Project, U.S. program designed to investigate the evolution of ocean basins by core drilling of ocean sediments and underlying oceanic crust. Funded by the National Science Foundatio...