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Rasmussen, Knud Johan Victor

(Encyclopedia) Rasmussen, Knud Johan VictorRasmussen, Knud Johan Victorkən&oomacr;tˈ yōˈhän vĭkˈtôr räsˈm&oobreve;sən [key], 1879–1933, Danish arctic explorer and ethnologist. Born in…

air mass

(Encyclopedia) air mass, large body of air within the earth's atmosphere in which temperature and humidity, although varying at different heights, remain similar throughout the body at any one height…

Bethmann-Hollweg, Theobald von

(Encyclopedia) Bethmann-Hollweg, Theobald vonBethmann-Hollweg, Theobald vontāˈōbält fən bātˈmän-hôlˈvāk [key], 1856–1921, German chancellor. A career civil servant, he became minister of the interior…

Mount Saint Helens

May 18, 1980   Mount St. Helens in Washington spews smoke, soot and ash into the sky in April, 1980. Its eruption that May devestated an area of about 150 square miles. Related Links…

Selected U.S. National Parks

by Elizabeth Olson photos by Carol M. Highsmith The U.S. National Park Service was created on August 25, 1916, by President Woodrow Wilson. In 1872, Yellowstone National Park became the…

Franklin, Sir John

(Encyclopedia) Franklin, Sir John, 1786–1847, British explorer in N Canada whose disappearance caused a widespread search of the Arctic. Entering the navy in 1801, he fought in the battle of…

wind

(Encyclopedia) wind, flow of air relative to the earth's surface. A wind is named according to the point of the compass from which it blows, e.g., a wind blowing from the north is a north wind. The…