It's the beginning of the season when we all spend more time in roaring traffic, deafening airports and loud restaurants, wondering what on earth the person next to you just said. Don't even mention ...

S1 is the first heart sound that doctors can hear using a stethoscope. The vibrations that occur when the mitral and tricuspid valves in the heart close produce the S1 sound. There are two common ...

We used a professional sound meter to measure the din of daily life and talked to scientists about the health risks it can pose. A looping video of a suburban neighborhood curbside on a cloudy day.

From a blackbird’s song to the rumble of a passing train, sounds are produced by vibrations moving through the air, ground, or water in invisible waves. When those soundwaves enter your ear, they make ...