National Public Radio: Capping out-of-control oil wells and snuffing gas leaks has been a challenge since humans began tapping underground energy resources. Robots a mile beneath the surface of the Gulf of Mexico positioned a “top hat” device over the main pipe on the leaking BP well Thursday night. But it was unclear how much oil could be captured by this latest attempt. How to stop the oil pouring into the Gulf of Mexico? The Soviets nuked several out-of-control gas wells, according to …