President puts himself on collision course with newly elected Republicans who "ignore the science" on climate change
EPA claims new fuel efficiency standards will cut carbon and save haulage operators millions of dollars
Official admits watchdog will struggle to deliver 17 per cent cut in emissions outlined in failed climate bill
Proposed rules to make it easier for motorists to find out the carbon impact and fuel efficiency of their vehicle
EPA Administrator Lisa Jackson promises to lead crackdown on soaring levels of electronic waste
Business group launches fresh lawsuit targeting the EPA's right to regulate carbon emissions
New emissions standards likely to be finalised next year after EPA completes draft rules
Watchdog provides fresh details on how it plans to operate new emission permitting regime
Top diplomat insists US will honour goal of cutting carbon emissions 17 per cent by 2020
Watchdog files official request calling for reinstatement of polluter pays tax to support cash-strapped Superfund clean-up programme