Tuesday's health and safety news from the world of football:
- Jim Harbaugh, who stars in a Visa commercial about the San Francisco 49ers leader coaching a youth team, made the ad come to life when he led a youth clinic in Santa Clara, Calif., the San Francisco Chronicle reported.
- Buccaneers.com featured Derrick Brooks' public service announcement, which is part of the United Way's 40th Anniversary contest for the best NFL PSA.
- The New York Times' Well blog wrote about overcoming the culture of playing through concussions in high school football.
- U-T San Diego reported on the tackling issues and how California officials are monitoring unnecessary roughness and violent hits.
- The Toronto Globe and Mail reported that the Canadian government is launching a multimillion-dollar national initiative to study the impact of concussion on the developing brain in response to growing concerns about children's safety in sports.
-- Bill Bradley, contributing editor