Hugh Herr has lived a fascinating life. He started out as a mountain climbing prodigy from a Mennonite family in Lancaster, Pennsylvania, but when a horrific case of frostbite robbed him of his legs, he devoted his life to developing better, smarter prosthetics.  

His incredible invention, the Biom, is the first true bionic prosthetic, and has helped rebuild the bodies of everyone from wounded war heroes to a ballroom dancer who lost a leg in the Boston Marathon bombing.