Buildings are seen during a moderately polluted day in Nanjing, Jiangsu Province, China, April 19, 2016. REUTERS/Stringer ATTENTION EDITORS – THIS PICTURE WAS PROVIDED BY A THIRD PARTY. CHINA OUT. NO COMMERCIAL OR EDITORIAL SALES IN CHINA.
Buildings are seen during a moderately polluted day in Nanjing, Jiangsu Province, China, April 19, 2016. REUTERS/Stringer ATTENTION EDITORS – THIS PICTURE WAS PROVIDED BY A THIRD PARTY. CHINA OUT. NO COMMERCIAL OR EDITORIAL SALES IN CHINA.