Smog plan goes after polluters

Areas around Beijing would see cleaner air by the end of this year

China unveiled an environmental plan on Wednesday to curb air pollution in its northern region, which constantly suffers smog in the winter.

Twenty-eight cities in and around the Beijing-Tianjin-Hebei region are being put under tighter restrictions on processing and production in the coal, cement, steel and other industries that cause high levels of air pollution, according to an action plan.