Have you ever stepped outside on a frigid, quiet morning and heard sounds emanating from somewhere far away? It's not your ...

The speed of sound, which is the speed at which a sound wave moves through the air from its source is about 768 miles per hour at sea level. Until after World War II, no aircraft on earth, ...

Summer is the season of sound in Chicago: from fireworks to car stereos, the jingle of paleta carts to outdoor concerts. But hearing a concert from over four miles away? That’s exactly what happened ...