Riddell's Newest Helmet – The Concussion Blog
NFL hopes to reduce head injuries with helmet experiment
NFL Football Brain Injuries Helmet Research & Preventing Concussions
Seeking to reduce head contact, NFL mandates use of Guardian Cap helmet for early portion of training camp - ESPN
NFL Concussion Prevention: Could New Helmet Save Football?, News, Scores, Highlights, Stats, and Rumors
NFL Helmet Challenge Raises the Bar for Helmet Technology and Performance, Awards $1.55 Million in Grant Funding to Help New Models Get on Field Faster
New high-tech helmets may protect American football players from debilitating concussions
Teen's woodpecker-inspired system aims to reduce football concussions
New helmets could help doctors 'see' concussions on football