A renewable energy innovation called "Wind Tree," constructed in the shape of the tree, where each "leaf" acts as a mini wind-turbine to generate electricity, as part of the COP21, United Nations Climate Change Conference, in Paris, Thursday, Dec. 3, 2015. "Wind Tree" is presented by Engie, known as GDF Suez prior to April 2015, the French multinational electric utility company. (AP Photo/Francois Mori)