Intergovernmental Panel on Climate Change Chairman Rajendra Pachauri listens to a speaker at the Delhi Sustainable Development Summit in New Delhi, India., in this Feb. 6, 2010, file photo. The Indian leader of the U.N.'s expert panel on climate change has pulled out of a key meeting in Nairobi while pledging to cooperate with New Delhi police investigating allegations of sexual harassment. (AP Photo/Gurinder Osan, file)
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