TORONTO, ON - SEPTEMBER 09: Professor of Atmospheric Science at Penn State Michael Mann, Marine Ecologist Jeremy Jackson, and moderator Thom Hartman attend the "Before The Flood" premiere during the 2016 Toronto International Film Festival at Princess of Wales Theatre on September 9, 2016 in Toronto, Canada. (Photo by Alberto E. Rodriguez/Getty Images)

TORONTO, ON - SEPTEMBER 09: Professor of Atmospheric Science at Penn State Michael Mann, Marine Ecologist Jeremy Jackson, and moderator Thom Hartman attend the "Before The Flood" premiere during the 2016 Toronto International Film Festival at Princess of Wales Theatre on September 9, 2016 in Toronto, Canada. (Photo by Alberto E. Rodriguez/Getty Images)

TORONTO, ON - SEPTEMBER 09: Professor of Atmospheric Science at Penn State Michael Mann, Marine Ecologist Jeremy Jackson, and moderator Thom Hartman attend the "Before The Flood" premiere during the 2016 Toronto International Film Festival at Princess of Wales Theatre on September 9, 2016 in Toronto, Canada. (Photo by Alberto E. Rodriguez/Getty Images)

A self-driving car by Google is displayed at the Viva Technology event in Paris, France, June 30, 2016. REUTERS/Benoit Tessier

Republican presidential nominee Donald Trump speaks at the Cleveland Arts and Social Sciences Academy in Cleveland, Ohio, U.S., September 8, 2016. REUTERS/Mike Segar

Republican presidential nominee Donald Trump reads off a teleprompter as he speaks at the Cleveland Arts and Social Sciences Academy in Cleveland, Ohio, U.S., September 8, 2016. REUTERS/Mike Segar

A Moroccan man looks at a computer screen displaying a picture of King Mohammed VI of Morocco on September 8, 2016 in Rabat. Smiling and relaxed, Morocco's King Mohammed VI wears a psychedelic T-shirt and jeans as he poses with an admirer in Paris. It's a far cry from the traditional pomp of Morocco's royal court, but pictures of the king casually posing with his subjects are doing the rounds on social media in the kingdom. / AFP PHOTO / FADEL SENNAFADEL SENNA/AFP/Getty Images

A Moroccan man looks at a computer screen displaying pictures of King Mohammed VI of Morocco on September 9, 2016 in Rabat. Smiling and relaxed, Morocco's King Mohammed VI wears a psychedelic T-shirt and jeans as he poses with an admirer in Paris. It's a far cry from the traditional pomp of Morocco's royal court, but pictures of the king casually posing with his subjects are doing the rounds on social media in the kingdom. / AFP PHOTO / FADEL SENNAFADEL SENNA/AFP/Getty Images