Bats use a perceptual system called echolocation that allows them to produce high pitch sounds that bounce off nearby objects and living things. Humans can't normally hear these sounds ...

Ruben Graham-Morris, a blind eight-year-old boy, has mastered echolocation to get around on his own. Ruben was born with Leber's congenital amaurosis, a genetic disease that left him blind from birth.

Mice and rats communicate with each other using ultrasound. These baby rats are ... They use an amazing system called echolocation, which helps them fly around and hunt in the dark.

Ultrasound in Medicine One of the most well ... Whales: Masters of EcholocationWhales rely on ultrasonic sounds for echolocation, a technique that helps them navigate and hunt in the dark, murky ...

Many bats perceive their world mostly through echolocation: they emit a call and listen for the reflected echo, which in turn allows them to "see" what is around them. But if many bats are ...

Many bats perceive their world mostly through echolocation: they emit a call and listen for the reflected echo, which in turn allows them to "see" what is around them. But if many bats are ...

People who are pregnant or have a condition of the reproductive system may need one. A transvaginal ultrasound is similar to an abdominal ultrasound in that they both use high-frequency sound ...