Some people hear a persistent hum that nobody else notices. Researchers investigated the mystery and found a surprising possible cause.

Experts aren't positive why some people hear a humming noise that never ceases. However, new research may offer an ...

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 ...

Theories about the cause of the phenomenon The Hum abound, from acoustic pollution originating from human sources, to sounds that nature itself makes. Or that the ear itself produces the humming sound ...