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Weissenfels
(Encyclopedia) WeissenfelsWeissenfelsvīsˈənfĕls [key], city (1994 pop. 34,816), Saxony-Anhalt, E central Germany, on the Saale River. It is an industrial city and a rail junction. Manufactures…Vista
(Encyclopedia) VistaVistavĭsˈtə [key], uninc. city (1990 pop. 71,872), San Diego co., SW Calif., near the Pacific coast, in an agricultural and resort area; inc. 1963. Its manufactures include metal…Thomas, Seth
(Encyclopedia) Thomas, Seth, 1785–1859, American clock manufacturer, b. Wolcott, Conn. In 1812 he sold his partnership in a clock business established by Eli Terry and set up a factory to make metal-…Sundsvall
(Encyclopedia) SundsvallSundsvallsŭntsˈvälˌ [key], city (1990 pop. 50,380), Västernorrland co., E Sweden, a major seaport on the Sundsvallfjärden, an arm of the Gulf of Bothnia. Manufactures include…Trollhättan
(Encyclopedia) TrollhättanTrollhättantrôlˈhĕˌtän [key], city (1990 pop. 40,180), Älvsborg co., S Sweden, on the Götaälv River near Lake Vänern. The Götaälv River, which falls 108 ft (33 m) in about 1…thallium
(Encyclopedia) thalliumthalliumthălˈēəm [key], metallic chemical element; symbol Tl; at. no. 81; interval in which at. wt. ranges 204.382–204.385; m.p. 303.5℃; b.p. about 1,457℃; sp. gr. 11.85 at 20…screw
(Encyclopedia) screw, simple machine consisting essentially of a solid cylinder, usually of metal, around which an inclined plane winds spirally, either clockwise or counterclockwise. It is used to…tungsten
(Encyclopedia) tungstentungstentŭngˈstən [key] [Swed.,=heavy stone], metallic chemical element; symbol W; at. no. 74; at. wt. 183.84; m.p. about 3,410℃; b.p. 5,660℃; sp. gr. 19.3 at 20℃; valence +2…mercury, chemical element
(Encyclopedia) mercury or quicksilver [from the Roman god Mercury], metallic chemical element; symbol Hg [Lat. hydrargyrum=liquid silver]; at. no. 80; at. wt. 200.59; m.p. −38.842℃; b.p. 356.58℃; sp…The World's Worst Pollution Problems, 2008
In 2006 and 2007, Blacksmith Institute and Green Cross Switzerland released lists of the "World's Worst Polluted Places." For 2008, they have updated their methodology to focus on…Trending
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