Cooling towers emit vapor into the night sky at a nuclear power plant operated by EON SE in Grohnde, Germany, on Wednesday, Aug. 07, 2013. Germany’s air pollution is set to worsen for a second year, the first back-to-back increase since at least the 1980s, after Chancellor Angela Merkel’s decision to shut nuclear plants led utilities to burn more coal. Photographer: Krisztian Bocsi/Bloomberg via Getty Images
