Acoustic frequency combs organize sound or mechanical vibrations into a series of evenly spaced frequencies, much like the teeth on a comb. They are the acoustic counterparts of optical frequency ...

Tobacco hornworm caterpillars have no organs that resemble ears. Yet, scientists were able to figure out how they hear—and it ...

When they detected a mysterious sound, they transferred it to an audograph disc and stored it in their archives because they didn't know what they were hearing at the time.