August 19, 2011 8:04 am Cheerleading Second Only to Football in Rate of Concussions Cheerleading is second only to football in number of concussions suffered. US & World Videos 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 1:10 Bay Area app monitors problems for people living with Parkinson's