New film tackles dangers of concussions in the NFL
Clip: 12/23/2015 | 8m 25s
Dr. Bennet Omalu was working in a Pittsburg coroner's office when he was asked to examine the body of a local football hero. What he discovered would bring new attention to the hazards of head injuries. A new film, "Concussion," chronicles the NFL's early efforts to discredit the research. Jeffrey Brown reports.
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