Global temperatures are set to rise more than one degree above pre-industrial levels according to the UK's Met Office. Figures from January to September this year are already 1.02C above the average between 1850 and 1900.
By Lord Hunt & Terry Townshend - We have learnt to expect surprises at UN climate change summits. At Durban, a year ago, there was the unexpected, but welcome, agreement to begin negotiations on a new legally binding instrument involving all major emitters of greenhouse gases, to be finalised by 2015, and to take effect in 2020.
* By Lord Julian Hunt. The main aim of the UN climate summit at Durban, which concluded unsuccessfully on Friday/Saturday morning, was to produce an agreement about targets for emissions by developed countries, and longer term commitments from developing countries.
Climate negotiators agreed a pact that would for the first time force all the biggest polluters to take action on greenhouse gas emissions, but critics said the action plan was not aggressive enough to slow the pace of global warming.
The main aim of the UN climate summit at Durban, which began on November 28 and finishes on December 9, is to produce an agreement about targets for emissions by developed countries, and longer term targets from developing countries.