Democratic Party

President signals he is willing to compromise on cap-and-trade legislation and allow some free allocation of carbon permits

Having signalled his support for biofuels, Obama now faces calls to increase amount of ethanol that can be blended with conventional fuels

Climate minister says Obama's commitment to environment has raised prospects of global agreement at UN summit in December

President backs up environmental rhetoric with the greenest budget in US history

Consultancy claims quick dispersal of government funds could encourage investors back towards clean tech firms

"We invented solar technology, but we've fallen behind countries like Germany and Japan in producing it," warns president

Following Republican opposition to stimulus plan, White House moves to dampen expectation that cap-and-trade legislation will pass this year

The US, India and China pledge support for international deal to curb use of Mercury – a deal that bodes well for Copenhagen

Environmental groups disappointed as president ignores calls for a moratorium on Canadian tar sand developments

From Obama's green revolution to marine energy simulators, we run down the stories that have been making waves this week