See the movie "Concussion." But first read the classic book from the acclaimed concussion doctor who's changing how America thinks about safety in youth sports.

This is an important, cutting-edge work by the premier specialist in his field. If you watch sports, or if you have a young athlete in your family, you need to read this book. Dan Shaughnessy, author of The Curse of the Bambino

From Washington to Quebec, from offices at the NFL to the New York Times, from the NHL players union to the soccer fields of Anytown, U.S.A., people are talking about concussions....