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Rising rates of addiction to heroin and prescription drugs have been making headlines across the country. Find out what the latest science is telling us about the nature of addiction.

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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.