Links:
[1] http://admin.indiaenvironmentportal.org.in/news/new-cars-pollute-more-old-ones-says-study
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/times-india-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-pollution
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/vehicular-pollution
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/carbon-dioxide
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/fuel-efficiency
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/automobiles
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/cse-study
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/india