LONDON: Air pollution has emerged as the world's single largest environmental health risk, having caused seven million deaths in 2012 — 80% of which were from heart attacks and stroke.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/air-pollution-biggest-health-risk-says-who
[2] http://admin.indiaenvironmentportal.org.in/category/author/kounteya-sinha
[3] http://admin.indiaenvironmentportal.org.in/category/newspaper/times-india-new-delhi
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-pollution
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/who
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/carcinogenicity
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/cancer
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/respiratory-diseases
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/indoor-air-pollution