The singer spoke at a Super Bowl press conference.
Let’s not politicize the health of youth athletes and the human brain.
The Hall of Famer covered the field in a chat with HuffPost.
The troubled former New England Patriots player died of an apparent suicide earlier this year.
"That's not OK right there," CBS' Tony Romo says during replay.
Being able to diagnose CTE in living people could be a game changer.
The positions that suffer the most brain injuries are also the ones played by more blacks, Kevin Blackistone says.
"That's just hard to watch," Fox announcer Joe Buck said.
The league's $30 million deal with the National Institutes of Health to study CTE is dissolving in acrimony.