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EPA issues proposed endangerment finding on GHGs
04/27/2009
Greenhouse gases (GHGs) contribute to air pollution, which may threaten public health or welfare, the US Environmental Protection Agency said on Apr. 17.The proposed endangerment finding, which followed a scientific review that the US Supreme Court ordered in 2007, said that concentrations of six gases (carbon dioxide, methane, nitrous oxide, hydrofluorocarbons, perfluorocarbons, and sulfur hexafluoride) are at unprecedented levels because of human activities, according to EPA. It said that these high concentrations are very likely the cause of higher average temperatures and other climate changes.The agency said its analysis confirmed that climate change also increases drought, heavy dow...
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