Running on Empty Series: The dirt behind coal

President Obama's stimulus package seeks to invest in green energy… but what does that mean? The coal industry is asking for stimulus funding to scrub coal plants clean – but critics say that's dirty coal putting on a clean green cover. In our first installment of our energy series, "Running on Empty", Yanmei Xie takes a look at the dirt behind coal.

Click here for the full newscast for Thursday, January 29, 2009