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.
Poland is a test case for shale gas development in Europe, but so far the industry has failed to take off.
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.
Environmental campaigners have shown they can fight the system – but how far can they fix it?