Impatient over congressional inaction, President Barack Obama has unveiled a plan to battle global warming that takes aim at a big source of heat-trapping gases: America's coal-fired power plants. ... more 
Impatient over congressional inaction, President Barack Obama has unveiled a plan to battle global warming that takes aim at a big source of heat-trapping gases: America's coal-fired power plants. (June 25) less 
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Tue, Jun 25, 2013 6:14 PM EDT