Adding noise to your sleep routine may sound counterintuitive, but many people swear by wrapping themselves in a blanket of sound to get a better night of rest. You’ve probably heard of white noise.

“Noise” is a fuzzy word—a noisy one, in the statistical sense. Its meanings run the gamut from the negative to the positive, from the overpowering to the mysterious, from anarchy to sublimity. The ...

A persistent, low-frequency hum has invaded the city of West Haven, Connecticut, according to many residents, leaving some shaken by an occurrence they're calling everything from mysterious to ...