repter: chaain's brai ll e e eually bf examined by resechs eckingngor c.t.e chronikitramaticicncephalopapay, a degenerativerain disease believedo beaused by bost universitresesech ve ened 307 brainsf mostst male athletesn ju seven were fromomenen nfnfplayerhaveomined t dyscussion over he injuries. chris nowinskiy is founder of the concsion legacy foundatiti, which evenenally study chaain's brain. >> w wh women not plaling foba, don't have a netif eral atesith a lot osurur who are ininhnirir0ss, or s, le wewewiwien. >> open b bs. >> rorstaino lpcoh h asa ara university a is a er advocateor notototowing youth soccerlayers to o ad the b bl til they a a 14.4.. her contrirition to ience will ouast evev the m mt memorable of games. ben tracy, c news, santa clala, califnia. >> pelley: and tt's s e cbs evening news for tonht. for all of us at cbsbkews all ptning spoored by cbs your breaeaea news lead this is kktv 11 ne a a53 th ie anniveveary a trag dd i iour communit united 5858585shsh 25 5 ararago. lo bacwi witnes w w was therehat dadada hello. im don ward heo. im dianne derby arrest has been mad