This weird, sponge-like stuff is 10 times stronger than steel

When you think of strength, you probably think of something dense and heavy, like steel. Well, MIT engineers have created one of the strongest materials ever, but it's more reminiscent of a foam Nerf toy than a metal beam.

The researchers used flakes of graphene, which is already recognized as the world's strongest two-dimensional material, to create a sponge-like shape that resembles a coral. Structural engineers and materials scientists will recognize it as something else: a holy grail.
 
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