College sports take another step in trying to change the attitude towards concussions.

FOX's Chris Hoenig reports:

The NCAA is stripping coaches of power to return players to the field after a concussion.

The major sports conferences passing a new rule that gives doctors and trainers the final call on clearing a player after a head injury.

(Krabak) We know that the skelty immature brain up until college years is really sensitive to having concussions. There's not a specific age, I mean at any age you can get a concussion. Really the key is to recognize it and stop and sit out."

Doctor Brian Krabak is a concussion expert...

The new policy is designed to set both authority and responsibility between coaches and medical professionals in treating concussions.

Chris Hoenig, FOX News.