Touch Bionics's new i-Limb Pulse prosthetic hand can carry an astonishing 200-pound load. The aluminum hand, on sale in the U.S. this month, features pulsing motors that, when triggered by the user's forearm, apply constant pressure to an object, rather than simply closing around it. This ability also improves each finger's dexterity for easier shoe tying and belt buckling. "People want to go back to their normal lives," says Touch Bionics co-founder Phil Newman. "This gets them one step closer."