Inventor Dean Kamen previews the prosthetic arm he’s developing at the request of the US Department of Defense. His quiet commitment to using technology to solve problems while honoring the human spirit has never been more clear. Dean Kamen is an innovator, but not just of things. He hopes to revolutionize attitudes, quality of life, awareness. While an undergraduate, he developed the first portable infusion device, which delivers drug treatments that once required round-the-clock hospital care. And, through his DEKA Research and Development, which he cofounded in 1982, he developed a portable dialysis machine, a vascular stent, and the iBOT -- a motorized wheelchair that climbs stairs (Stephen Colbert took one for a spin). Yes, he's a college dropout, but he's a huge believer in education, and in 1989 established the nonprofit FIRST (For Inspiration and Recognition of Science and Technology) to inspire teenagers to pursue careers in science. FIRST sponsors lively annual competitions, where students form teams to create the best robot.