The municipal authorities of Tangshan, in the Chinese province of Hebei, have decided to initiate a level II emergency action as of 8am on 3 December, with the aim of reducing pollution. The measure will remain in force until further notice. In the meantime, the cities of Shijiazhuang, Handan, Xingtai, Cangzhou, Baoding, Hengshui, Langfang and […]