Cop20

About 190 nations faced a crossroads on Friday on how boldly to fight global warming as United Nations talks in Lima went into overtime amid concerns that watered-down goals could undermine a UN climate summit in Paris next year.

Developing nations must cut carbon emissions even if they feel it is unfair, US Secretary of State John Kerry said on Thursday, warning of climate "tragedy" if quarrelling derails a global pact.

Thousands of people marched in central Lima against the abuse of Earth's resources Wednesday, urging ministers haggling over a world climate deal to ensure a global switch to 100-percent clean energy by 2050.

Rich countries had by Tuesday pledged more than $10 billion in climate aid for poor economies in a major milestone for UN global warming talks in Lima, according to a tally compiled by AFP.

About 190 nations faced a crossroads on Friday on how boldly to fight global warming as United Nations talks in Lima went into overtime amid concerns that watered-down goals could undermine a UN climate summit in Paris next year.

Developing nations must cut carbon emissions even if they feel it is unfair, US Secretary of State John Kerry said on Thursday, warning of climate "tragedy" if quarrelling derails a global pact.

Thousands of people marched in central Lima against the abuse of Earth's resources Wednesday, urging ministers haggling over a world climate deal to ensure a global switch to 100-percent clean energy by 2050.

Rich countries had by Tuesday pledged more than $10 billion in climate aid for poor economies in a major milestone for UN global warming talks in Lima, according to a tally compiled by AFP.