14 of Indian cities figure in World's 20 most polluted cities list: WHO

All India Radio Wednesday, 2 May 2018 ()
14 of Indian cities figure in World's 20 most polluted cities list: WHODelhi and Varanasi are among the 14 Indian cities that figure in a list of world's 20 most polluted cities in terms of particulate matter PM2.5 levels in 2016.PM2.5 includes pollutants like sulfate, nitrate and black carbon, which pose the greatest risk to human health.
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