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While the new Will Smith movie has received mixed reviews from critics, Peggy Mason, a professor of neurobiology at the University of Chicago, is more concerned with the science behind the story than whether it's an Oscar contender. She joins us to discuss her thoughts on the film and to shed light on the dangers associated with concussions.

Building a Safer Helmet

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Could a better helmet hold the key to reducing the epidemic of sports-related brain injuries? Ash-har Quraishi talks with a team of university researchers who say it’s time for a new design. We revisit the story.

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Joel Weisman and his panel of journalists continue the conversation about concussion concerns. Each panelist weighs in on their own sports background, and whether they would allow their own children to play football.