FILE – In this Dec. 16, 2009 file photo steam and smoke is seen over the coal burning power plant in Gelsenkirchen, Germany. At the G-7 summit in Elmau Merkel had pressed for the ambitious commitment to “decarbonize” the world economy. Though the aim is distant, it’s aimed in part at helping generate momentum for a broader conference on how to combat global warming in Paris in December. (AP Photo/Martin Meissner, file)