COP-15

Split emerges between developing nations, as think-tank argues Danish text contained more ambition from industrialised countries than first thought

Controversial draft agreement signals that key industrialised nations will support global scheme to raise climate funds from aviation and shipping

Diplomats attempt to calm anger over leaked document, insisting numerous informal texts are being prepared by negotiators

Developing countries respond furiously to private draft text that threatens principles agreed at Kyoto

As India's negotiating team lurches into crisis, Saudi Arabian delegation casts doubt on climate science

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

Prime minister tells the Guardian he hopes the EU will agree to a cut in emissions of 30% by 2020

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

Speculation is mounting that EU will upgrade emission targets from 20 per cent to 30 per cent cuts by 2020

As energy bill receives its second reading, government announces launch of Pay As You Save scheme