Smoke billows from a coal powered steel plant August 26, 2001 in western, PA. - 

America is in a slow transition to cleaner energy, which means carbon-spewing coal power plants are high on the hit list. But we still mine lots of coal in America. Energy reporter Dina Cappiello has been looking into what happens to all that coal we're not burning here.

Click the media player above to hear reporter Dina Cappiello in conversation with Marketplace Morning Report guest host Mark Garrison.

Follow Mark Garrison at @GarrisonMark