Emerging countries insist legally binding treaty must be completed in time for South Africa summit in 2011
Three main parties clash again over environmental pledges and funding commitments, as Simon Hughes suggests that the Lib Dems will not soften anti-nuclear stance
Republican senator Lindsey Graham accuses Obama administration of "cynical ploy" for Latino votes
Labour pledges to roll out national electric car charging network as Lib Dems talk up goal of a "zero carbon Britain"
RenewableUK hits back at suggestion Britain's wind farm planning system is among the best in Europe
Study says policy environment has improved in many countries since Copenhagen, putting low-carbon economy on track to exceed $2tr mark by 2020
"I don't have a theological opposition to nuclear power"
Cochabamba conference closes with call for rich countries to halve greenhouse gas emissions and set up a court to punish climate crimes
Wind farms at Gunfleet Sands and Robin Rigg mean the UK can now power up to 700,000 homes
Proposed delay gets short shrift from European Commission