Delhi tops list of world’s most polluted cities, Kolkata close 2nd
Delhi and Kolkata are the two most polluted cities in the world in terms of average annual population-weighted PM 2.5 exposure, according to a new report, Air Pollution and Health…
Delhi and Kolkata are the two most polluted cities in the world in terms of average annual population-weighted PM 2.5 exposure, according to a new report, Air Pollution and Health…