BT may scrap plans to build its own wind farm amid fears that regulation would undermine financial viability
Chair of House Energy and Environmental Subcommittee says he wants to see legislation drafted by the summer
AIG withdraws from US Climate Action Partnership after congressman questions whether taxpayers' money should be used to fund lobbying for cap-and-trade scheme
Experts predict €10 EUAs could represent good deal for long-term investors
Experts claim willingness to reward executives for cutting carbon emissions provides "litmus test" for firms' seriousness about climate change
Government kite mark for voluntary offset schemes ignores more innovative schemes
Royal Society reports warns personal carbon allowances will be needed to meet emission targets
Legal challenge to argue Regional Greenhouse Gas Initiative trading scheme is putting New York utility at an unfair disadvantage
Permits awarded to renewables projects worth less on carbon market after huge sell-off prompted by recession
British government fought to have CCS – carbon capture and storage – included in Clean Development Mechanism