A student works on her robot gladiator. Courtesy of National Tooling and Machining Association hide caption

itoggle caption Courtesy of National Tooling and Machining Association

The SawStop senses an electrical current in the hot dog. Courtesy of SawStop hide caption

itoggle caption Courtesy of SawStop

Pumps at a gas station in Laconia, N.H., show higher prices for fuel on Monday. Jim Cole/AP hide caption

itoggle caption Jim Cole/AP

Cybex President Art Hicks says business is up strongly amid demand from overseas. The Medway, Mass., company makes exercise equipment for health clubs. Chris Arnold/NPR hide caption

itoggle caption Chris Arnold/NPR

A woman walks past a Wells Fargo Home Mortgage office in La Habra, Calif. Many mortgage brokers say the Federal Reserve's new rules favor big banks. Jae C. Hong/AP hide caption

itoggle caption Jae C. Hong/AP

A foreclosed house for sale in the Detroit suburb of Southfield, Mich. Carlos Osorio/AP hide caption

itoggle caption Carlos Osorio/AP

The cooling towers of Three Mile Island's Unit 1 plant pour steam into the sky in Middletown, Pa. In 1979, Three Mile Island's Unit 2 nuclear power plant was the scene of the nation's worst commercial nuclear accident. Carolyn Kaster/AP hide caption

itoggle caption Carolyn Kaster/AP