Researchers: 96% of ex-NFL players had brain disease

Researchers say 96% of former NFL players who donated their brains to science after death tested positive for a brain disease linked to concussions. CNN’s Sanjay Gupta explains.

Question of the Day

April 25

Q: About 1/3rd of pet owners say they have purchased at least one of these for their pet… A: Sports jersey

April 24

Q: Nearly half of all dog owners admit their dogs do this… A: Snore

April 23

Q: We buy close to 800-million dollars a year of this product, which we usually have a breakfast… A: English Muffins