The blockbuster New York Times bestseller that caused a media firestorm and stayed in the headlines for weeks at last arrives in paperback—with a new afterword about the Barry Bonds perjury investigation. This is the complete insid...

"PROFESSIONAL FOOTBALL PLAYERS DO NOT SUSTAIN FREQUENT REPETITIVE BLOWS TO THE BRAIN ON A REGULAR BASIS."So concluded the National Football League in a December 2005 scientific paper on concussions in America's most popular ...