The Plan to Save the Rhino With a Cervix-Navigating Robot
The duck is famous for two things: really liking bread (even though they\u2019re not supposed to be eating it), and wielding insanely complicated reproductive bits. More specifically, male ducks have corkscrew-shaped penises, while females\u2019 reproductive tracts corkscrew in the opposite direction. It\u2019s a disturbing consequence of an evolutionary arms race, the females\u2019 countermeasure to notoriously aggressive males.