Web Date: January 10, 2011
Mercury Levels On The Rise In Polar Bears
Mercury levels have increased steadily in Northwestern Greenland's polar bears in the past century, according to a new study, mainly due to industrial sources such as coal burning and iron smelting (Environ. Sci. Technol., DOI: 10.1021/es1028734). The neurotoxic metal travels through the atmosphere to the Arctic, where researchers have shown that it accumulates at the top of . . .
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