Image: Buildings are seen during a moderately polluted day in Nanjing, Jiangsu Province, China, April 19, 2016. REUTERS/Stringer BEIJING (Reuters) – Air quality in China’s largest cities continued to improve during the first six months of 2016, the country’s environment ministry said on Sunday. China’s largest 338 cities enjoyed more clean … Continue reading China’s urban air quality improves in first half: ministry