July 1, 2013 7:36 pm AlterG Bionic Leg Boosts Rehab New technology made in Silicon Valley helps patients regain mobility. Scott Budman reports. US & World Videos 1:16 National recognition for a Bay Area teen fighting big tobacco 1:11 Total body nuclear medicine PET scan continues to evolve 1:02 Google productivity expert authors guide to boost wellness 2:23 Watch: Feeling and showing the impact of organ donation 1:07 Watch: Autism specialist discusses rise in children on the spectrum