Close-Up of the First Mechanical Gear Ever Found in Nature
The biological form of a mechanical gear was observed in nature for the first time in juvenile planthoppers (Genus: Issus), a common insect that can be found in gardens across Europe.
The insect 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. The finding demonstrates that gear mechanisms previously thought to be solely man-made have an evolutionary precedent.
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