Late last year, the O'Malley administration officials released draft regulations for hydraulic fracturing, concluding that, with proper regulation, fracking for natural gas in Western Maryland could be done safely. But are the risks worth the rewards? Our guests: Paul Roberts, citizen member of the Marcellus Shale Advisory Commission; Terry Engelder, professor of geosciences at Penn State; Robert Oswald, professor of molecular medicine at Cornell and co-author of “The Real Cost of Fracking: How America’s Shale Gas Boom is Threatening Our Families, Pets and Food.”