For seven generations, Sheila Russell's family has farmed the land of Pennsylvania. Now, the rush for shale gas threatens to put an end to it all.
There are thousands of lost oil and gas wells scattered across Pennsylvania, the industrial legacy of a previous era. Now, someone is looking for them.
For decades Youngstown, Ohio, was one of the great centers of U.S. steel manufacturing. Then the industry collapsed and jobs disappeared. Now, shale gas is reviving the city's hopes - and fears.
While shale gas has revived the economy of a Pennsylvania county, it also threatens to undermine traditional farming.