Democratic Party

Moderate Democrats and Republicans increasingly confident they can secure the 60 votes needed to pass cap-and-trade legislation

As Google debuts new deforestation tracking tool, president's backing for REDD plan increases chances of forest protection deal

White House negotiating team promises "robust engagement", takes tough stance on China

Experts hopeful Copenhagen deal could contain commitment to lower trade barriers for key clean technologies, kick-starting stalled Doha negotiations

Landmark ruling strengthens president's ability to deliver climate change deals in both Washington and Copenhagen

Boost for Copenhagen as reports emerge that the US Environmental Protection Agency will confirm this evening that it has the authority to impose new carbon rules

Flurry of good news dominates start of summit, as South Africa announces emissions target and Obama signals he will attend talks' conclusion

State news agency reports that long-awaited carbon target has been confirmed

And US will commit to greenhouse gas reduction target of 17 per cent below 2005 levels by 2020

Move comes only a week after China’s president Hu Jintao made a similar promise to reduce emissions