FRANCE-CLIMATE-WARMING-COP21

A picture taken on December 3, 2015 shows "wind trees", a renewable energy innovation constructed in the shape of a tree, where each "leaf" acts as a mini wind-turbine to generate electricity, displayed at the COP21, the United Nations conference on climate at Le Bourget, on the outskirts of Paris. More than 150 world leaders are meeting under heightened security, for the 21st Session of the Conference of the Parties to the United Nations Framework Convention on Climate Change (COP21/CMP11), also known as Paris 2015 from November 30 to December 11. / AFP / LOIC VENANCE (Photo credit should read LOIC VENANCE/AFP via Getty Images)