In this May 22, 2014, photo, train cars containing coal are seen past power lines as they are pushed up an incline before being unloaded at Norfolk Southern's Lamberts Point coal terminal in Norfolk, Va. As the Obama administration weans the U.S. off dirty fuels blamed for global warming, energy companies have been sending more of America's unwanted energy leftovers to other parts of the world where they could create even more pollution. (AP Photo/Patrick Semansky)
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