President expected to announce up to $3.4bn in smart-grid grants as Department of Energy releases fresh climate science funding
As leading Republicans dig their heels in, President Obama insists a consensus is building in favour of carbon legislation
Top aide says bipartisan talks are delivering "very encouraging" results
Prime minister will tell the Major Economies Forum that world leaders have an historic opportunity to reach an international deal this year
Fresh commitments may breathe life back into Copenhagen deal as India prepares to announce cap and trade scheme
Senior officials and influential Senators indicate they are still hopeful that a US climate bill can be passed before Copenhagen
All branches of government to set binding emissions targets for 2020 within next 90 days
Senior Democrats are attempting to secure backing for the Boxer-Kerry climate bill
Green groups frustrated by President's attempt to downplay significance of getting a deal in Copenhagen this year
The phasing out of counter productive and outdated fossil fuel subsidies promises to deliver deep cuts in carbon emissions and revitalise international climate change negotiations