Color-changing helmets could warn you about head injuries

Blog sponsored by Engadget.com 17.8.2015 Comments Off on Color-changing helmets could warn you about head injuries

Head injuries can be particularly sinister — unless it’s obvious that you took a bad blow, you might not get the help you need in time to mitigate the damage. University of Pennsylvania scientists may have an easy way to raise the red flag when y…

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