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Nations reach climate change deal, but deep divisions persist

After tense talks that stretched into the weekend, nations have reached a plan on climate change.

The deal came Sunday after two weeks at the UN conference in Lima, Peru.

It commits countries to limiting carbon emissions that are at the root of climate change, but scientists say that goals still fall short of what is needed to avert the most serious effects of climate change. And a final sign-off won't come until a follow-up conference in Paris next year.

For more, we're joined by Cara Horowitz, co-executive director of the Emmet Institute on Climate Change and the Environment at UCLA.