The call that comes back as a map A bat leaving its roost at dusk emits ultrasound pulses at frequencies between 20 and 200 kilohertz, well above the ceiling of human hearing, which tops out around 20 ...

Many bat species emit echolocation calls and use the returning echoes to find their way, detect the presence of fluttering ...

It may sound like a scene from "Nosferatu," but research from the University of East Anglia shows that humans can use bat-like echolocation skills to judge the distance of objects. The new study ...