A new report by the WHO on urban air quality has said that Zabol in Iran is the most polluted city in the world, followed by Gwalior and Allahabad. Delhi which topped the list last time, is on 11th position.<br /><br />Subscribe to OneIndia News Channel for latest updates on movies and related videos.<br /><br />https://www.youtube.com/channel/UCqTa3sNT6SfiQ2DQK_kuWlA<br /><br />Follow us on Twitter : https://twitter.com/Oneindia<br /><br />Like us on Facebook : https://www.facebook.com/oneindianews/<br /><br />Join our circle in Google Plus : https://plus.google.com/u/0/b/112448479869362930381/+oneindia
