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Photo by: DONALD STAMPFLI

** FILE ** In this Feb. 19, 2001, file photo, Briton Robert Watson, right, then-chairman of the Intergovernmental Panel on Climate Change (IPCC) accompanied by James J. McCarthy, USA, IPCC's co-chairman, gestures during a news conference in Geneva, Switzerland. Some climate scientists are calling for drastic changes in how future United Nations climate reports are done. (AP Photo/Donald Stampfli)

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