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MacMillan, Donald Baxter

(Encyclopedia) MacMillan, Donald Baxter, 1874–1970, American arctic explorer, b. Provincetown, Mass., grad. Bowdoin College, 1898, and studied at Harvard. After a decade of teaching, he went on the…

Wrangel Island

(Encyclopedia) Wrangel Island or Wrangell IslandWrangel Islandrăngˈgəl [key], Rus. Ostrov Vrangelya, island, 1,740 sq mi (4,507 sq km), in the Arctic Ocean, between the East Siberian Sea and the…

David, T. W. E.

(Encyclopedia) David, T. W. E. (Sir Tannatt William Edgeworth), 1858–1935, Australian geologist and explorer, b. near Cardiff, Wales. David came to Australia in 1882 as an assistant geological…

snow line

(Encyclopedia) snow line, altitude above which or latitude beyond which snow does not melt in summer (usually called the permanent snow line), or, in winter, the line to which snow extends at a given…

Amundsen, Roald

(Encyclopedia) Amundsen, Roald (Roald Engelbregt Grauning Amundsen)Amundsen, Roaldrōˈäl äˈm&oobreve;nsən [key], 1872–1928, Norwegian polar explorer; the first person to reach the South Pole. He…

oarfish

(Encyclopedia) oarfish, large, elongated fish, genus Regalecus, found in the oceans worldwide except for the polar regions. Oarfish species are solitary and rarely seen by humans. The giant oarfish,…

Hazen, William Babcock

(Encyclopedia) Hazen, William Babcock, 1830–87, American general, b. West Hartford, near Hartford, Vt. In the Civil War he fought at Shiloh, Perryville, and Murfreesboro, and in the Chattanooga…

Eckener, Hugo

(Encyclopedia) Eckener, Hugo, 1868–1954, German airship designer and pilot, Ph.D. Univ. of Leipzig, 1892. As a journalist he covered early flights of Zeppelin's first rigid airships. He joined (1908…

timberline

(Encyclopedia) timberline, elevation above which trees cannot grow. Its location is influenced by the various factors that determine temperature, including latitude, prevailing wind directions, and…

Ross, Sir John

(Encyclopedia) Ross, Sir John, 1777–1856, British arctic explorer and rear admiral. In 1818 he went in search of the Northwest Passage but turned back after exploring Baffin Bay. Financed by Sir…