United Nations (United States) (AFP) - Robert Redford told the United Nations on Monday that negotiations on a global deal to tackle climate change could be the world's "last chance" to save the planet. "This December, the world must unite behind a common goal," said the American actor and producer. "Because look, this is it. This is our only planet, our only life source. "This may be our last chance." World governments will try to forge a new global accord to address climate change at a UN climate conference in Paris in December, with both developed and developing countries committing to cutting greenhouse gas emissions.

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