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.

It was around 2005 that Simon Payne started hearing it. A strange, low, rumbling sound that travels through walls and floors and seems to come from everywhere. At first, he was convinced the noise was ...

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 ...