The UN's top climate change chief has called for technologies that soak CO2 from the atmosphere - but are such techniques feasible? Tom Young investigates
Wind farm in Inner Mongolia secures CDM approval with pledge to reduce emissions by 101,000 tonnes a year
Analysts say high use of UN offsets in EU emissions trading scheme suggests industrial gas credits are being ditched before 2013 cut off point
Carbon Retirement urges small and medium emitters to become "carbon-neutral" and boost voluntary offset market
Figueres urges Japan to re-engage with negotiations on future of Kyoto Protocol, warning carbon market could suffer as a result of current stand-off
Denise Hamú welcomes efforts to engage business, but fears impact of biodiversity compensation schemes
PwC report claims fraud protection measures around green projects remain "relatively weak" and must be addressed
Wildlife Works nets 1.45 million offsets for safeguarding forest in the Kasigau corridor
Officials say plan will boost jobs, but green groups warn scheme will lead to increased air pollution