Football helmets are practically useless when it comes to the only thing we really want them to do:  protect our brains.  This may sound like a bold claim, but it is backed by a number of studies, including this one where old-timey leather-head helmets actually outperformed modern football helmets.  Riddell, the official helmet manufacturer for the NFL, recently lost a lawsuit for making the unfounded claim that their "Revolution" helmet (allegedly) reduced concussion...