Aides suggest Kerry-Lieberman-Graham plan will include a number of different options
Virginia attorney general says EPA's ruling that carbon emissions threaten human health was based on "questionable scientific reports" and "falsified data "
More bad news for Obama administration's climate change strategy as state governor and coalition of trade groups launch legal action against EPA's right to regulate emissions
Chamber files suit against EPA ruling that it can legislate against carbon emissions under the Clean Air Act
Resolution calls on EPA to reverse endangerment finding on the grounds climate scientists have been involved in an "organised and ongoing effort" to promote "discredited" global warming
Watchdog steps up crack down on hazardous chemicals, denying firms confidentiality clause that has been used to conceal the identity of around 17,000 chemicals from the EPA
Bosses at more than 80 companies write to members of Congress urging them to pass climate change bill as quickly as possible or risk American firms "falling behind"
Lisa Murkowski pledges to use obscure measure in attempt to strip powers from the Environmental Protection Agency
Massachusetts election defeat and Republican plan to block Environmental Protection Agency from regulating carbon threaten to leave the president's climate change strategy in tatters