President blots his copybook with green groups for the first time
Officials say president Obama will push forward controversial plans for 100 per cent auctioning of carbon allowances, but news reports suggest otherwise
Capitol Hill insiders express confidence over Waxman-Markey climate bill
Agencies release biofuel targets and unveil $1.8bn in funding designed to accelerate switch to second generation fuels
President reverses changes to Endangered Species Act that allowed federal agencies to sideline environmental advice
Hillary Clinton offers admission to ease obstacles towards reaching agreement at climate change summit in Copenhagen
New figures show US carbon emissions will be 1.3 per cent lower than previously expected by 2013 as a result of stimulus package
New trains could reach speeds of 100 miles per hour
Nancy Sutley, head of the White House Council on Environmental Quality, talks to Joel Makower about how the federal stimulus package will be a boon for green businesses
Senior House Representatives launch new bill that requires deeper emission cuts than those proposed by Obama