From hip replacement to total knee reconstruction, bionics‚ the convergence of biology and technology is now a way of life for millions of people. But that's just the tip of the iceberg; today's most advanced bionics now enable people with paralysis to stand up and walk again. Here's an inspiring demonstration of Berkeley Bionics' eLEGS and the insatiable drive of the human spirit. Eythor Bender, Amanda Boxtel and Richard Besser are featured