Scientists Say: Kevlar
This super-strong plastic is in many household objects
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These helmets are made with 19 layers of Kevlar, a super-strong plastic that is lighter — and far tougher —than steel.
weaponeer/Flickr/ (CC BY-NC 2.0)
This super-strong plastic is in many household objects
These helmets are made with 19 layers of Kevlar, a super-strong plastic that is lighter — and far tougher —than steel.
weaponeer/Flickr/ (CC BY-NC 2.0)