CHINA-SHANGHAI-PM 2.5 (CN)
(Xinhua News Agency) Updated: 2012-12-27 16:01
SHANGHAI, June 27, 2012 (Xinhua) -- Vehicles run on a steet on a gloomy day in downtown Shanghai, east 皇冠体育app, June 27, 2012. Shanghai began to publish the city's average PM 2.5 concentration from Wednesday. (Xinhua/Chen Fei)
