EPA

New regulations based on US Clean Air Act welcomed by green groups but strongly criticised by coal industry

EPA asserted authority to move forward without new laws from Congress at hearing where contrarian views were on display

Gina McCarthy uses first set-piece speech to argue that controversial emissions regulations will 'spark business innovation'

Tech and retail giants lead the way as official rankings reveal those US companies stepping up their interest in green power

Obama's climate change agenda secures major boost as four-month Senate stand-off over EPA appointment comes to an end

Reports suggest EPA has already submitted first set of draft power plant emission regulations

We highlight the key lines from the President's landmark address on climate change at Georgetown University

US president says country is already paying price of inaction and backs nuclear energy and fracking in comprehensive strategy

From emissions standards to more climate resilient building codes, we run down the key components of the White House's sweeping new climate change strategy

Documents released ahead of long-awaited climate change speech confirm plans for coal power crackdown