Americans are increasingly relying more on natural gas and renewable energy for heat, power and transportation. From 2007 to 2012, natural gas use grew from 23.4% to 27.2% while renewable energy consumption rose from 6.4% to 9.4%, according to a report released on Thursday.
http://www.forbes.com/sites/uciliawang/2013/01/31/report-clean-power-i




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