Some species make these calls by contracting their larynx or clicking their tongues. Other bats can make these calls through their nostrils, using special noses that function as megaphones to amplify ...

Does high-frequency ultrasonic sound have the potential to transform indoor navigation and make secure authentication frictionless? Sonarax claims it does. We interviewed the CEO to find out more ...

Other bats can make these calls through their nostrils, using special noses that function as megaphones to amplify and direct sound, but they look like they smashed their face into a wall.