Craig Hutto considers himself part bionic man. In 2005, doctors amputated his leg after a shark attacked him during a fishing trip off the Florida Gulf Coast. "I was 16 years old at the time," recalls ...

Hugh Herr, who is the director of the Biomechatronics group at MIT’s Media Lab and the founder of iWalk. He invents bionic limbs that move like flesh and bone. Herr lost both of his limbs in a tragic ...