ImPACT sells tests and training to pro teams, colleges, high schools and sports medicine centers, but some question whether the program actually works.
Junior Seau's suicide was a tragic loss. How aggressively the NFL shepherds its former players going forward will decide how many more tragedies occur, writes Peter Keating in ESPN The Magazine.
When the NFL reversed field on concussions, it spawned a medical gold rush that pits scientist against scientist in a quest for cures, treatments and dead men's brains.
National Football League Commissioner Roger Goodell has ordered all 32 NFL teams to send doctors and athletic trainers to a special meeting on concussions, ESPN has learned.
ESPN The Magazine's Peter Keating says the NFL Committee on Mild Traumatic Brain Injury is re-evaluating everything from its membership to the data it has collected.