Democrat Congressmen back controversial resolution to strip watchdog of its right to regulate greenhouse gas emissions
Department of Transportation warns that attempts to block the EPA regulating carbon emissions will drive up costs for car firms and motorists
As Republican senators challenge climate science consensus, UN Secretary General urges leaders to resist climate sceptics' attempts to derail international negotiations
But agency signals that it will undertake gradual rollout of new carbon-permitting regulations
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