particularly in the nfl. i turn my attention to high school players and what concussions can do to their young brains. i met a family who lost their son playing a game he loved. they made the remarkable decision to donate his brain. what scientists are learning from his brain is stunning. number 44, senior nathan styles is a spring hill broncos star runningback. if you watch him run, he had a flow about him that was just beautiful. i mean it looked so graceful. he s a starter on the varsity basketball team, a singer. the 2010 homecoming king is nathan styles. the broncos lost that game. the next day, nathan had headaches. no big deal until five days later when his mom receive add phone call. i got a call from the trainer at school sayi ining nathan is telling me he is still having headaches. you need to take him to the emergency room. i did. had a cat scan, nothing. he was out of play for a week. when he was ready to return, his mom was worried. he said mom, a