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NEW YORK, NY - NOVEMBER 03: Former Vice President Al Gore, chairman of Generation Investment Management and chairman of The Climate Reality Project, participates in a panel discussion at the New York Times 2015 DealBook Conference at the Whitney Museum of American Art on November 3, 2015 in New York City. (Photo by Neilson Barnard/Getty Images for New York Times)

NEW YORK, NY - NOVEMBER 03:  Former Vice President Al Gore, chairman of Generation Investment Management and chairman of The Climate Reality Project, participates in a panel discussion at the New York Times 2015 DealBook Conference at the Whitney Museum of American Art on November 3, 2015 in New York City.  (Photo by Neilson Barnard/Getty Images for New York Times)