Lord John Browne, former CEO of BP and author of "Seven Elements That Changed the World," discusses fracking's potential and why there will always be risks associated with energy exploration.... more 
Lord John Browne, former CEO of BP and author of "Seven Elements That Changed the World," discusses fracking's potential and why there will always be risks associated with energy exploration. less 
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Fri, Mar 7, 2014 3:38 PM EST