Climate talks 'on brink' of deal

Tougher climate target unveiled
Ed Miliband commits the UK government to cutting carbon emissions by 80% - up from a 60% target - by 2050.

MPs blast government over CO2
The government has made "very poor progress" on reaching its own carbon emissions-cutting targets, MPs say.

Climate concerns halt coal plant
The US state of Georgia blocks construction of a new coal power plant based on concerns over carbon emissions.

Natural lab shows sea's acid path
Natural CO2 vents on the sea floor show scientists how life will be affected as carbon emissions acidify the oceans.

US climate change bill is blocked
A US law that would have introduced a cap on carbon emissions is blocked by senators.