BP America, Caterpillar and Conoco end support; opponents claim climate law is dead in the water
With his Senate super-majority gone, can the President continue to pursue plans for a US climate change bill?
Bosses at more than 80 companies write to members of Congress urging them to pass climate change bill as quickly as possible or risk American firms "falling behind"
Encouraging moves on climate funding, deforestation and the US climate bill are all overshadowed by increasingly fractious row over future of Kyoto Protocol
Moderate Democrats and Republicans increasingly confident they can secure the 60 votes needed to pass cap-and-trade legislation
Landmark ruling strengthens president's ability to deliver climate change deals in both Washington and Copenhagen
Senior White House official confirms Obama could still attend crucial climate summit
As row over climate change legislation continues to rage, new study argues low-carbon policies will deliver huge windfall to US economy
Standards will also be extended to cover all new homes and offices from 2020
Sustainable building sector will contribute $550bn to the US economy over the next four years, according to study