Seeing is believing, but what about hearing? Since the 1970s, a small percentage of people all over the world have detected a mysterious sound just on the edge of their auditory range. Some folks ...

In 1994, researchers at the University of New Mexico sent out a survey to 8,000 residents near Taos, N.M., to ask them about a mysterious low-frequency hum that had been bothering people there for at ...

Residents of a tiny English village have been kept awake for the past two months by a persistent low hum, which arrives every night at midnight and goes until 4 a.m., and nobody knows what causes it.