Who will be affected, how much will ticket prices rise, and will emissions be cut - BusinessGreen answers the key questions
Yoghurt manufacturer to launch multi-million Euro mutual fund to support socially responsible tree planting schemes
State-wide cap-and-trade scheme will not come into full effect until start of 2013
Think tank warns chancellor George Osborne's UK-only carbon floor price would simply shift emissions to other parts of the EU
CER market continues recent volatility with dip below €10 mark before strong recovery
Neither side backs down in Oslo talks, with EU insistent aviation will be part of its emissions trading scheme from next year
Russia could join China and the US in speaking out against aviation emissions being included in EU's cap and trade system
European Commission estimates energy-intensive sector will have accumulated allowances worth €7-12bn by the end of 2012
European trade body dismisses "myths" that it opposed entry into emission trading scheme, reiterates call for global mechanism
SSE and Dong lead group calling for changes to EU emissions trading scheme that take account of promised energy efficiency savings