What does Delhi's polluted air do to the human body? Dr Arvind Kumar shows NDTV a chilling comparison between healthy lungs and pollution-damaged lungs, delivering a stark message: you don't need to smoke to suffer lung damage, breathing toxic air may be enough. #DelhiNews #Pollution #LungDamage About NDTV (English news channel): NDTV is India's Most-Trusted News Broadcaster with the latest updates in news, sports, entertainment and much more from within India.