Read the Endangerment and Cause or Contribute Findings for Greenhouse Gases under the Clean Air Act, signed by the Administrator on December 7, 2009. On December 15, 2009, the final findings were published in the Federal Register under Docket ID No. EPA-HQ-OAR-2009-0171.

• Endangerment and Cause or Contribute Findings for Greenhouse Gases under Section 202(a) of the Clean Air Act (PDF)(52 pp, 315 K)