India hosts 7 out of top 10 most polluted cities globally: data

People row a boat in smog in Kolkata, India, March 6, 2019. India has received the dreadful distinction of having seven of its cities in the list of top 10 most polluted cities in the world, according to data compiled in the IQAir AirVisual 2018 World Air Quality Report on Tuesday. (Xinhua/ Tumpa Mondal)