Protective helmets make sports safer
This Helmet Will Save Football. Actually, Probably Not. - The New York Times
Helmet technology for the football field could help protect soldiers on the battlefield - CBS News
Will the NFL's Blitz for Position-Specific Helmets Pay Off?
How far are we from issuing full face helmets to soldiers? - Quora
Accelerometers Could Finally Fix the NFL's Concussion Crisis
Can Technology Make Football Safer?
First QB helmet designed to help reduce concussions approved
Shockbox Helmet Sensor Warns Of Possible Concussion