The debate over America's vast reserves of natural gas usually focuses on the risks and the benefits. In the benefits column: it's a relatively cheap, it's domestic, and it's a cleaner burning than coal. The risks? Well, that's usually when Hydraulic Fracturing — or fracking — comes up. But StateImpact Texas reporter Mose Buchele reports, recent shifts in the price of natural gas are presenting a whole new set of challenges for America's energy future.