Do concussions on the football field cause brain damage? Have coaches, team doctors and players themselves been in denial? We hear about growing evidence and some new signals of seriousness from the National Football League. Also, Afghanistan and Copenhagen on the President's agenda, and why eager volunteers to feed the hungry on Thanksgiving Day may be turned away.
Banner image: Former NFL player Brent Boyd (C) rubs his head while sitting next to NFL Commissioner Roger Goodell (L) during a hearing of the House Judiciary Committee about football brain injuries on Captiol Hill. Boyd suffers from headaches, depression, fatigue and dizziness caused by what his doctors diagnosed as post-concussion syndrome. Photo: Chip Somodevilla/Getty Images