This Helmet Will Save Football. Actually, Probably Not. - The New York Times
More padding the issue of concussions and better helmets
The Future of Football Helmets
How football helmets fail to protect against some of the most dangerous hits in the game - The Verge
Can high-tech helmets solve football's thorniest problem?
Why NFL Helmets Will Never Be Concussion-Proof
Safety and style meet in football helmets - Waynesburg University Athletics
Vikings set to unveil new helmet for 2019 season and here's what it looks like
Experts: Helmet improvement not perfect solution to concussions
New Smart Helmet Could Spot Concussions in Real Time
Football helmets don't provide much protection from concussions, study suggests - CBS News
Armor on the Field: The NFL's Headlong Race to Build the Unbreakable Linebacker