Mice Sing Love Songs Like a Jet Engine

Ultra-high pitched mouse squeaks have something in common with the roar of a jet engine. New research finds that the rodents make ultrasound bleeps by creating a small air jet in their windpipes, employing a mechanism previously seen only in jet engines and high-speed subsonic flows. Researchers led by biologist Coen Elemans of the University of Southern Denmark used high-speed camera scopes to capture images of the larynxes, or voice boxes, of mice as the animals made their vocalizations.