http://inhabitat.com/coal-accounts-for-less-than-40-of-u-s-electricity-production-in-2011-lowest-level-in-over-30-years/coal-power-produced-less-than-40-percent-of-electric-for-2011/ Green design & eco innovation for a better world Thu, 23 May 2013 21:03:05 +0000 hourly 1 http://wordpress.org/?v=abc