Iran, India, Pakistan and Mongolia have most polluted cities in the world - The Guardian

The Guardian Iran, India, Pakistan and Mongolia have mos t polluted cities in the world The Guardian Photograph: Vahid Salemi/AP Cities in Iran, India, Pakistan and Mongolia rank among the worst on the planet for air pollution, while those in the US and Canada are among the best, according to the first global survey. The Iranian city of Ahvaz had the ... WHO: Iran, South Asia worst for city air pollutionThe Associated Press Canada's air among the world's best: WHO reportCTV.ca all 172 news articles »