In this April 27, 2017 file photo smoke billows out of the chimneys of the Neurath lignite power plant in Neurath. Germany. World leaders affirmed their commitment Thursday, June 1, 2017 to combating climate change ahead of U.S. President Donald Trump’s announcement on whether he would pull out of the Paris climate accord. Trump is expected to announce his decision on Thursday afternoon. (Photo by Federico Gambarini/DPA via AP Photo)
