Beijing, neighboring cities see heavy pollution

A man wearing a mask walks past Guomao Bridge in Beijing, capital of China, March 16, 2016. As temperatures rise, dispersal of foul air becomes more difficult. Beijing and its nearby Tianjin and Hebei Province have been smogbound since the start of this week. A yellow alert for air pollution is issued Wednesday afternoon in Beijing. (Xinhua/Luo Xiaoguang)