Cop 21: 'Good' climate deal on table - Stern

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Lord Stern said he is optimistic a "good" deal will come out of the Paris climate change summit. The president of the Royal Academy and chair of Grantham Research Institute on Climate Change and Environment, who used to advise the British government on climate change, said he hoped the current draft agreement would stand. "But in the famous words of Yogi Berra: 'it ain't over till it's over'", he added