Watch: Fracking Hell - The Untold Story

Click above to watch "Fracking Hell? - Poland's Dash for Gas," a segment from a three-hour "Earth Focus" special that digs deep into the issues of hydraulic fracturing, or "fracking."

A look at the risks of natural gas development in the Marcellus Shale: from toxic chemicals in drinking water to unregulated interstate dumping of potentially radioactive waste, are the health consequences worth the economic gains?