Photo by: Mandel Ngan
US Secretary of State John Kerry, right, gestures as he speaks, flanked by Mashable science editor Andrew Freedman, at the Mashable/UN Foundation "Earth to Paris" summit at Le Petit Palais in Paris, France, on the sidelines of the COP21, the UN climate change conference, Monday, Dec. 7, 2015. (Mandel Ngan/Pool Photo via AP)