Guardian Caps - Are the soft-shelled football helmet covers effective at limiting head injuries? - ESPN
Flexible NFL helmet aims to reduce head injuries
Which Helmet for Which Activity? | BrainLine
More padding the issue of concussions and better helmets
Helmets don't eliminate concussions. It's time for the NFL to ditch them | NFL | The Guardian
Football helmets don't protect against concussion — and we're not sure what does
Football Helmet Misconceptions: Q&A | Concussion.org
Modern football helmets no better than 'leatherheads' at protecting against concussions, study finds | MinnPost
How Well Do Football Helmets Protect Players from Concussions? - Neuroscience News
The Role Of Helmets In Protecting The Brain - PT360
It's A Surprise That Football Helmets Don't Actually Protect Against Concussions - Pledge Sports
Do Helmets Prevent Concussions? | Canadian Legal News
NFL Helmet Manufacturer Warned On Concussion Risk | FRONTLINE
Do headgear and helmets prevent concussions? | Axis Sports Med
Jeremy Repanich: Helmets alone won't save football from concussions - Sports Illustrated
High school helmets: Much changed, but how much they protect against concussions is questionable, experts say | Local News | Selma / Kingsburg | hanfordsentinel.com
New tests for helmets proposed in concussion fight | Chattanooga Times Free Press
New helmet design can deal with sports' twists and turns | University of California
Wearing headgear for sport does not protect against concussion, Australian experts warn | Concussion in sport | The Guardian
Football's Concussion Crisis Is Awash With Pseudoscience | WIRED
Sudbury Spartans look to better helmets for protection against concussions | CBC News
This Helmet Will Save Football. Actually, Probably Not. - The New York Times
Football Helmets Do Little to Protect Against Concussions: Study
