PENNSYLVANIA has played a big role in the history of American energy. Coal has been mined there since the 1760s (Pennsylvania is sometimes called “the coal state”).
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/half-death
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/economist-london
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/nuclear-power
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/greenhouse-gases
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/united-states-america-us
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/japan
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/nuclear-accidents
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/china
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/europe
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/electricity
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/global-warming
[12] http://admin.indiaenvironmentportal.org.in/category/thesaurus/carbon-dioxide