Tag: simple machines

Zooming in on Beetles' Knees, Biologists Find Tiny Screws and Nuts

By Valerie Ross | June 30, 2011 4:31 pm

Scanning electron micrograph images of the nut (A,B)
and screw (C, D) in the leg joint of a Papuan weevil

What’s the News: Biologists spend lots of time poring over nature’s nuts and bolts. Now, for the first time, they’ve found a biological screw and nut—previously thought to be an exclusively human invention. The legs of beetles called Papuan weevils, researchers report today in Science, have a joint that screws together much like something you’d find in the hardware store.

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CATEGORIZED UNDER: Living World
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