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
March 14
Q: In a recent survey, 66% of adults ages 18-27 were unable to identify this car part… A: The battery
March 13
Q: We may consider this a relatively recent trend, but the first time this happened was in the mid-1800’s… A: A selfie
March 12
Q: People who remember their dreams are more likely to do this activity… A: Daydream