This 3D-printed robotic arm could be the most advanced and most realistic yet

At just 21 years old, Easton LaChappelle is engineering the next standard of 3D-printed prosthetics. Inspired by a nine-year-old girl named Momo, LaChappelle teamed up with Microsoft to create a realistic robotic arm. He hopes the prototype will help usher in a new era of advanced, affordable prosthetics.