For many who live in Taos, they will do anything to assure you that something is buzzing in the air. It’s a phenomenon known as the Taos Hum.

The search continues for the source of a droning sound that has annoyed Highland Park neighborhood residents for the last year.

Highland Park neighborhood residents have been complaining for months about a low-pitched persistent droning sound. But no one can find the source.

Does the Earth have a hum? Many people claim they hear one, from Taos, N.M. to Bristol, England, and theories have included industrial excess and mind-control experiments. But researchers on the ...