Have you ever stepped outside on a frigid, quiet morning and heard sounds emanating from somewhere far away? It's not your imagination—cold air really does carry sound farther. Sound begins with ...

If you have ever watched a space film packed with roaring explosions and dramatic engine noise, here is the truth: space is silent. Completely. Not because it is calm, but because sound cannot travel ...

At the start of my career, I used to do acoustic testing in an anechoic chamber where sound is not reflected as it gets absorbed. But the quietness of these chambers always got me thinking of how ...