China to name and shame top ten worst-polluting cities each month . ' Air quality control is ecological red line , ' says Chinese vice-premier . Beijing , Tianjin , cities in northern provinces have signed plan to speed up air pollution control . Comment:
China to name and shame top ten worst-polluting cities each month . 'Air quality control is ecological red line , ' says Chinese vice-premier . Beijing , Tianjin , cities in northern provinces have signed plan to speed up air pollution control . Seven of world 's top ten most air-polluted cities in China , says ADB report .