Proposed Endangerment and Cause or Contribute Findings for Greenhouse Gases Under Section 202(a) of the Clean Air Act   Publication Date:   2009 Creator:   Environmental Protection Agency Subjects.Display:   Climate change Environmental policy emission reduction, greenhouse gas unknownUnited States.Environmental Protection Agency Source Institution:   Florida International University Proposed Endangerment and Cause or Contribute Findings for Greenhouse Gases Under Section 202(a) of the Clean Air Act