USEPA GHG Finding Triggers Reviews and Reconsiderations of Global Warming Science
Over ten years have passed since EPA was petitioned, in October 1999, by 19 private organizations asking EPA to regulate greenhouse gas emissions from new motor vehicles. A decade later, the issue continues to be fraught with controversy. The 1999 petition culminated in the 2007 US Supreme Court closely decided decision (5 to 4) in Massachusetts v. EPA (549 U.S. 497 ERC 2057 (2007)) requiring the EPA to make a finding on whether greenhouse gas emissions endanger public health. On December 7, 2009, EPA signed its finding that greenhouse gas emissions do endanger public health and welfare, and that cars and light trucks cause or contribute to the emissions
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