Examining America's "Quest" for Energy

NPR and WXXI's Innovation Trail look at the battle over fracking and where it fits into the quest for energy development in this country.

Fracking is one of the many subjects energy expert Daniel Yergin covers in his new book, "The Quest."

Yergin tells NPR's David Greene that the type of natural gas you get through fracking, the gas found in shale, only recently became a serious energy source for the U.S.

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