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young brains. during my investigation i met a family who lost their son playing this game that he loved, and they made this remarkable decision to donate his brain and what scientists are learning from his brain is stunning. number 44, senior nathan styles is a star running back for the broncos. >> if you would watch him run, he had a flow about him that was just beautiful. i mean, it looked so graceful. >> reporter: nathan is also a starter on the varsity basketball team, a singer. ♪ >> the 2010 homecoming king is nathan stiles. >> he is the toast of spring hill, kansas. the bronc...

this man says it's impossible to trick it. first, as you probably know by now, i've reported a lot on concussions in football, particularly in the nfl. recently i turned my attention to high school players and what can concussion kz do to their young brains. during my investigation i met a family who lost their son playing this game that he loved, and they made this remarkable decision to donate his brain and what scientists are learning from his brain is stunning. number 44, senior nathan styles is a star running back for the broncos. >> if you would watch him run, he had a flow a...