Study: Electric Cars Not So Green Unless Powered by Renewables
<a href="http://dc.streetsblog.org/2012/12/05/study-electric-cars-not-so-green-unless-powered-by-renewables/">http://dc.streetsblog.org/2012/12/05/study-electric-cars-not-so-green-unless-powered-by-renewables/</a>
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