IN GREEK mythology, Echo was a mountain nymph who lost her voice and was condemned to repeat only the words of others. Now science is poised to silence the sprite completely. A group of physicists, ...

Ancient rock artists were drawn to echo chambers. Members of early farming communities in Europe painted images in rock-shelters where sounds bounced off walls and into the surrounding countryside, ...

Bats navigate chaos in complete darkness by listening to shifting echoes, adjusting speed instantly without tracking every ...

A recent study by researchers from the University of Helsinki unveiled the unique acoustic properties of prehistoric rock art sites in Finland's Lake District. The Finnish research team, led by ...

A REMARK has just occurred to the writer, on turning over the account of cognate phenomena in Rayleigh's “Theory of Sound” (vol. 2, § 270), which seems to be of weight in this subject and may indeed ...