CNN tells the story of a new medical breakthrough for Keven Walgamott, who 17 years ago lost one hand and part of his forearm in an electrical accident.Created by DEKA R&D (founded by Segway inventor Dean Kamen), the LUKE arm "was in development for 15 years and is composed of metal motors with a clear silicon overlay that mimics skin," the article points out.While it currently draws power from an external battery (and is wired to a computer), they're working on creating a wireless version.