It's no secret that rain sounds offer troubled sleepers comfort. "Rain is predictable, calming, stable, and non-threatening," says Dr. Shelby Harris, a behavioral sleep-medicine specialist. According ...

Pink noise is different. Instead of equal energy at each frequency, the energy halves with every doubling of frequency (so ...

You may have heard of white noise and might assume it's the best noise for sleep. But did you know there's a whole range of "colored noises" that can help you drift off to sleep each night? From gray ...