On This Page EPA is taking a common-sense approach to developing
standards for greenhouse gas emissions from mobile and
stationary sources under the Clean Air Act. Below are the key
proposed or completed actions taken to implement Clean Air Act
requirements for carbon pollution and other greenhouse gases. A
summary of EPA's efforts to reduce carbon pollution is also
available in testimony by Gina McCarthy, Assistant Administrator
for EPA's Office of Air and Radiation, to Congress on June 29,
2012. (16 pp,105 K, About PDF) Greenhouse Gas Endangerment
Findings On December 7, 2009, Administrator Lisa Jackson signed
a final action, under Section 202(a) of the Clean Air Act,
finding that six key well-mixed greenhouse gases constitute a
threat to public health and welfare, and that the combined
emissions from motor vehicles cause and contribute to the
climate change problem. Learn more about the Greenhouse Gas
Endangerment and Cause or Contribute Findings. EPA and the
National Highway Traffic Safety Administration