NFL hopes to reduce head injuries with helmet experiment
Helmet sensors may help detect concussions in young football players
Magnets in helmets might make football safer
Puffy, spongy Guardian Caps could help curb NFL head injuries
More padding the issue of concussions and better helmets
Wearing headgear for sport does not protect against concussion
New Helmet Liner May Reduce Football Concussions
Football helmet with liquid padding may prevent concussions
Football's Concussion Crisis Is Awash With Pseudoscience
Flexible football helmet absorbs hits like a car bumper, could put an
Football helmet with liquid padding may prevent concussions
Football helmets don't provide much protection from concussions
Guardian Cap - Soft-Shell Protective Helmet Cover
Football helmets don't prevent concussions. What can?