Obama

In an open letter defending a controversial project, Canada's natural resources minister accuses a pipeline's opponents of colluding with 'radicals' and 'jet-setting celebrities'

Department of Interior rubber-stamps 500MW of wind and solar projects

As House approves controversial bill, administration says president will veto move to bounce him into Keystone XL pipeline approval

Obama tells GOP audience that Rick Perry, a governor whose state is on fire, is 'denying climate change'

Surprise announcement confirms tightening of US smog rules will have to wait until 2013

President Obama: "The single most important step we've ever taken as a nation to reduce our dependence on foreign oil"

President angers green groups with plans to expand drilling in Alaska and off Atlantic coast

White paper invites public input on how to deliver administration's promised clean energy targets

All eyes on Obama's State of the Union address as administration's "climate tzar" steps down

Extension of green incentives now depends on House vote