Representatives at the talks, which opened on Dec. 1 with hopes for momentum following a climate deal last month between China and the United States, were split over issues including greenhouse gas cuts and new cash to help poor nations cope with a warming world.
"We are almost there," Peruvian Environment Minister Manuel Pulgar-Vidal told delegates. "I am sure we will find solutions." The talks had been due to end on Friday afternoon but were extended to last overnight.
Emerging nations such as China and India want the Lima gathering to stress that the rich will cut greenhouse gas emissions most, and pay for rising climate damage in vulnerable countries. The United States and the European Union want to ensure that poorer nations will also rein in rising emissions.
After Lima, governments are expected to outline national plans for cutting emissions beyond 2020 by an informal deadline of March 31, 2015, to form the building blocks of a global climate deal to be agreed in Paris in December 2015.
But options on the table in Lima range from obliging nations merely to publish a vague outline of their carbon plans on a U.N. website to making all provide detailed projections of emissions that will be reviewed by experts.
"There's the good, the bad and the ugly," said Alden Meyer, of the Union of Concerned Scientists, who said "ugly" would mean only vague action for Paris and "good" would be detailed accounts.
Read more at Lima Climate Talks at Crossroads on Ways to Slow Warming
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