Author: Admin - 16/12/2015 Share Twitter Facebook New Delhi: Air pollution reduces visibility in New Delhi. The world observes World Environment Day on 5th June every year to raise global awareness. (Photo: Sunil Majumdar/IANS) ← Previous Next → New Delhi: Air pollution reduces visibility in New Delhi. The world observes World Environment Day on 5th June every year to raise global awareness. (Photo: Sunil Majumdar/IANS) New Delhi: Air pollution reduces visibility in New Delhi. The world observes World Environment Day on 5th June every year to raise global awareness. (Photo: Sunil Majumdar/IANS)