Pop Warner to coaches on concussions: If in doubt, sit them out

     This weekend and next, pint-sized football players who have risen to the top of their youth leagues are striding heroically onto gridirons across the nation, playing out their own Super Bowl dreams. The scene may look pretty innocent. But growing concern about concussion in youth sports is casting a long shadow across the sidelines.

By Melissa Healy/Los Angeles Times

November 19, 2010