Links:
[1] http://admin.indiaenvironmentportal.org.in/news/clean-option-chuck-dirty-coal
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/financial-express-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/energy
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/natural-gas
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/liquefied-natural-gas-lng