Report says China could slash energy-related CO2 emissions 90% from business-as-usual with tough, but achievable new polices
American philanthropist to use personal wealth in ad campaign against climate sceptics in midterm elections
Merkel and Hollande say a new cross-border venture will promote renewables, help hasten move away from fossil fuels
European cities alliance writes to European Council chief asking for tough new 2030 low carbon goals
Roll out of smart grids in China could help world’s largest emitter to slow growth in C02
Carbon superpowers say they will step up efforts to improve emissions standards in cars, buildings and power plants
President Barack Obama proposes extra support for US communities hit by extreme weather events
US secretary of state and Chinese president Xi Jinping agree to advance cooperative efforts to push climate change on the global agenda
US government touts potential of solar as pricey new plant opens in California, but will have to compete with wind and gas
The majority of Americans want Congress and business to act on climate change, even if it comes with economic costs
Regulators of California’s efforts to cut CO2 emissions say tougher targets, expansion, needed after 2020
House of Representatives to question feasibility of clean coal as Republicans ramp up pressure ahead of midterms
Fairer share of wind power proceeds could help slow growth of opposition to wind turbines
The Chinese saw in the New Year with slightly less of a bang this year, as air pollution woes turn citizens from traditional firework displays
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
Full sitting of EU Parliament backs 30% renewables target, compared with 27% proposed by EC
Fight against Keystone XL to intensify after government report says US-Canada pipeline won’t increase emissions
Chinese government objected to scientists including carbon budget in IPCC Summary for Policymakers, documents reveal
Leading climate diplomat Sir David King says some developing countries are too vague about whether they will sign UN treaty