ナショナルジオグラフィックさんのインスタグラム写真 - (ナショナルジオグラフィックInstagram)「Photo by Matthieu Paley @paleyphoto | At a coal refinery near the Mongolian capital of Ulaanbaatar, moisture and some pollutants are removed from coal to make it a "cleaner" and more valuable fuel. A worker sweeping the floor wears a mask to shield him from the fine dust. In Mongolia, at least for now, coal is essential to surviving the brutal winters. But the toll it takes is steep: Ulaanbaatar has some of the world’s most polluted air. From the United States and Germany to India and China, air pollution cuts short an estimated seven million lives globally every year, according to the World Health Organization. This image is part of a story I recently shot for @natgeo. Please visit my profile @paleyphoto for a link to the story. #climatechange #airpollution #mongolia #ulaanbaatar #coal #fossilfuel」4月15日 14時04分