Insect Boasts 'Mechanical Gears'

If you think humans invented the kind of gears you find in an automobile transmission, think again.

Scientists have discovered that the humble Issus, a plant hopping insect the size of a flea, has “hind-leg joints with curved cog-like strips of opposing ‘teeth’ that intermesh, rotating like mechanical gears to synchronize the animal’s legs when it launches into a jump.”

It’s being called the “first observation of mechanical gearing in a biological structure,” according to scientists at the …

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