iRobot's DARPA-funded mechanical hand can take a beating, lift 50 pounds

Most companies might think twice about inflicting blunt force trauma upon their carefully crafted prototypes, but most companies just don't love baseball the way iRobot does. While developing a mechanical hand for DARPA's Autonomous Robotic Manipulation program, iRobot took a metal baseball bat to its three-fingered prototype. No need to cringe, though -- the artificial appendage came away virtually unscathed. The hand's durability comes from its flexible feelers, fingers molded from soft polyme...