Anderson Cooper speaks with Dr. Sanjay Gupta about the devastating brain injuries caused by hard hits on the field. Watch his documentary "Big Hits, Broken Dreams" on Sunday, January 29 at 8 p.m. and 11 p.m. ET.
Anderson Cooper goes beyond the headlines to tell stories from many points of view, so you can make up your own mind about the news. Tune in weeknights at 8 and 10 ET on CNN.
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