The Biggest Hurdles Plaguing a Global Climate Accord, Explained

Inside Climate News: It was not with starry-eyed optimism, but with fierce determination that global climate negotiators launched their treaty talks in Lima on Monday. Nobody is suggesting that it will be easy to draft a comprehensive pact to be signed in Paris next year.

Rather, the leaders of the talks are simply asserting that failure is not an option, as they confront the reality that significant global warming is already locked in and this year's record-breaking temperatures are bound to be exceeded again and again.

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