The human hand is amazingly complex. With 34 muscles, more than 30 tendons, and 27 bones, hands can grasp objects, express emotion, create works of art, and accomplish many of the tasks that drive ...

In his office in Northwestern's Silverman Hall overlooking Lake Michigan, Igal Szleifer uses his left hand to fasten a black cloth harness across his blue polo shirt, then clips a robotic device ...