
, Subscribe Give a Gift Archives Customer Service SEARCH Health Medicine Mind Brain Technology Space Human Origins Living World Environment Physics Math Video Photos Podcast RSS Grudge-Holding Crows Pass on Their Anger to Family and Friends Zooming in on Beetles’ Knees , Biologists Find Tiny Screws and Nuts 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 How the