The sudden boom in diesel cars and trucks in Delhi and the National Capital Region (NCR) has escalated the level of ozone gas in the air.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/capital-faces-health-risks-very-high-ozone-levels-and-once-again-cars-are-blame
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/daily-mail-united-kingdom
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-pollution
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/delhi
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/cse
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/ozone
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/nitrogen-dioxide
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-quality-monitoring
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/health-effects
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/india
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/pm-25