Regulators of California’s efforts to cut CO2 emissions say tougher targets, expansion, needed after 2020
Current head of international negotiations says developing nations will need to deliver emission reduction plans by 2015
Former Environment Secretary Lord Deben says national flood programmes have been neglected in past two decades
Presidents of France and USA issue statement ahead of summit to discuss economy, security and global warming
Sir David King says clear carbon cutting pledges are essential at UN meeting, warning leaders must commit to attend
European governments can “pressurise” heads of states into climate action says Connie Hedegaard
Europe could drop out of key economic race with China, USA and India unless it backs low carbon growth
World leaders can expect a call from from the former New York Mayor unless they take urgent action on climate change
Full sitting of EU Parliament backs 30% renewables target, compared with 27% proposed by EC
Speaking in London, Christine Lagarde says UN emissions deal and fossil fuel subsidies cut are now global priorities
Efforts at protecting rainforests could wither on the vine unless governments ramp up funding
US Secretary of State tells security experts climate challenge requires “collective leadership”
Joint statement says atomic power will play “critical role” in cost-effective low carbon transition
Former NYC Mayor Mike Bloomberg latest high-profile appointment as UN pushes for ambitious global deal
Government says new carbon trading scheme will be critical to meeting climate targets by end of decade
Francois Hollande’s climate negotiatons advisor urges Obama urged to commit to low carbon economy ahead of 2015 summit
Chinese government objected to scientists including carbon budget in IPCC Summary for Policymakers, documents reveal
Documents from whistleblower reveal extensive intelligence operation at 2009 UN meeting in Danish capital
Leading climate diplomat Sir David King says some developing countries are too vague about whether they will sign UN treaty
Envoy for Least Developed Countries “optimistic” about UN talks, but says rich nations need to demonstrate commitment to carbon cuts