China's Environmental Protection Ministry blamed the problem on vehicle exhaust, coal burning for winter heating and a warmer than usual winter that has left the air much more humid than normal, state-run news agency Xinhua reported Saturday.
Weather forecasters said there is no cold front expected in the near to help alleviate the situation. That means the provinces of Hebei, Shandong, Henan, Jiangsu, Anhui, Sichuan, as well as the cities of Beijing and Tianjin will remain shrouded in the dirty air. In some places, visibility is as low as 1/3 of a mile due to the smog.
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