Large Bubble Helmets Are Guardian Caps, NFL's New Safety Measure
Helmets act like a car bumper to protect your brain
In Race to Develop Safer Football Helmets, Many Questions Remain
New Football Helmet Could Save the Sport
New Stanford-Developed High-Tech Helmets Could Protect Football
The Longevity Project: Traumatic brain injury and concussion
This Helmet Will Save Football. Actually, Probably Not. - The New
Kansas City Researcher Says Active Helmet May Prevent Football
NFL: Concussions dropped by more than 50% among players who wore
With concussions at forefront of minds, helmet designs more important
Head Injuries & American Football - Ethics Unwrapped
Football helmets have improved but are far from 'concussion proof
Concussions are a huge issue in football. Outer-padded helmets