Talks at the UN climate summit in Bali have continued past their scheduled end despite optimism that a compromise could be reached between the EU and US.
The EU has been pressing for the final text to include a specific commitment that industrialised nations should cut their emissions by 25-40% by 2020.
The US and Canada oppose firm cuts and neither side shows signs of giving way.
UN Secretary General Ban Ki-moon said he was returning to the talks from East Timor to assist negotiators.
"I will go back to Bali tomorrow [Saturday] morning again to meet with the delegations... and engage myself in continuing further negotiations," he told a press briefing in the capital, Dili. 
Everybody is working hard towards a result, and nobody wants to be the country that makes it fail 
The Indonesian hosts of the climate summit have been trying to bridge the gulf between the two sides with a text that reportedly excluded firm numerical targets for 2020, but did contain acceptances that greenhouse gas emissions need to be stabilised by the end of the next decade and that rich nations should play the major part in the effort.
Neither the EU nor the US has formally accepted the compromise wording. Read More
