After growing concern from parents and schools over sports-related brain injuries, some doctors are working to protect the brain from the inside. Contessa Brewer reports.

What is a concussion? Probably not what you think it is. In this talk from the cutting edge of research, bioengineer (and former football player) David Camarillo shows what really happens during a concussion — and why standard sports helmets don’t prevent it. Here’s what the future of concussion prevention looks like.

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