Links:
[1] http://admin.indiaenvironmentportal.org.in/news/rlys-switches-green-track
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/times-india-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/environment
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/eco-sanitation
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/carbon-dioxide
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/biodiesel
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/fuel-efficiency
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/climate-change
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/rail-transport
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/india