Don't miss
"Big Hits, Broken Dreams" -- As the Super Bowl approaches, Dr. Sanjay Gupta explores the growing concern over football-related concussions and brain injuries in this revealing documentary. Gupta, a practicing neurosurgeon, spent the 2011 season with a Greenville, N.C., high school team still shaken by the 2008 death of a star running back who had suffered repeated concussion injuries. The program explores what happens to the brain under concussive conditions, and what parents, coaches and athletes need to know in order to protect themselves. 9 p.m. today, CNN.









