How mountaintop mining affects life and landscape

Miles O’Brien reports on how the Appalachian landscape is being irrevocably changed. More

Deep layers of underground coal are all but gone in West Virginia after 200 years of relentless mining, leaving thinner seams of coal on top of the state's beautiful mountains. But surface mining carries a huge cost: nothing less than mountains themselves. Science correspondent Miles O’Brien reports on how the Appalachian landscape is being fundamentally and irrevocably changed.

AIR DATE 5/3/17