As long as players are celebrated for “crushing tackles” and fans cast votes for “best hit ever” — no amount of helmet technology can protect against head injuries.

Despite greater awareness about the risks of concussions and other brain injuries – football remains as popular as ever. But as the 2012 NFL season gets underway this week, commentator Bill Littlefield explores the consequences of our national obsession.

Bill Littlefield says the harsh NCAA sanctions against Penn State University football have inspired emotional debate about what’s “fair.”