You cannot squeeze this ‘iron’ beetle. Now, scientists know why.

Devilish ironclad beetles are almost unbreakable – you can smoke them, stomp on them or drive them with a car, and they will go uncontrolled.

Now, scientists know that the cases of the outer wings of these beetles, known as elytra, are much harder – they are easily made up of a series of interlocking puzzle parts; The geometry and internal structure of this “saw” design increase the strength of the Beetle’s armor.

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