What's with padded helmet caps teams are wearing
Helmet manufacturers, coaches try to protect players with advanced
NFL studying helmet face guard that works like surgical mask
New Helmet Technology Aimed to Make Football and Other Sports Safer
Behind the scenes as Michigan's equipment staff keeps football
We Can Make Football Safer - Scientific American
Can a Better Football Helmet Save Your Kid's Brain? - Washingtonian
Study: Newer Football Helmets Could Slash Concussion Risks