Pictures: Ten Biggest Energy Stories of 2013
The U.S. fracked its way to the top, Asia's smog woes mounted, Arctic exploration heated up, and other not-to-be-missed trends appear in our roundup of the year's biggest energy stories.
The U.S. fracked its way to the top, Asia's smog woes mounted, Arctic exploration heated up, and other not-to-be-missed trends appear in our roundup of the year's biggest energy stories.
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