French President Hollande and Prime Minister Valls listen to French photographer and film director Arthus-Bertrand...
French President Francois Hollande (C) and Prime Minister Manuel Valls (R) listen to French photographer and film director Yann Arthus-Bertrand (L) as they visit the exhibition "60 solutions against climate change" before the opening of the event "France is committed to climate. Go COP21 !" at the Elysee Palace in Paris, France, September 10, 2015. Paris will host the World Climate Summit, called the COP21, from November 30 to December 11, 2015. REUTERS/Charles Platiau