In the town of Taos, New Mexico a strange phenomenon affects the population. It is called the Taos Hum — a strange humming noise like one that would come from an idle diesel engine left running. Investigation into this low humming noise has not lead to any tangible proof of where this noise might be coming from. Another strange thing about the mysterious humming sounds is that more men can hear it than women. Also some people cannot hear it at all.
The whole thing gets weirder as people who hear it cannot get rid of the irritating persistent hum even by putting on earplugs! The noise is louder inside the house or contained environment than outside. Some people hear it all the time and some hear it at intervals. For some its gets so disturbing that it keeps them up at night.
It is said that the humming sound began in 20 years ago but the exact time varies. However, when the reason or location of the noise could not be found, it gained so much importance that the people suffering from it contacted the United States Congress in 1993 and asked for help. A serious investigation of the mystery began in 1997 with several science and science institutions getting involved to get to the root cause of the noise. They interviewed people who were affected by the sound and were surprised to find that the effects of the mysterious humming resulted in nosebleeds, feeling dizzy, vibrations, irritability and, of course, sleep disorders.
The noise has also been reported in other places in the world giving these “Hums” their local titles, like the “Bristol Hum” and the “Bondi Hum”. Interestingly, the Massey University in Auckland, New Zealand, tried to record the hum and reported that its power spectral density has a frequency peak of 56 hertz. And last but not least, like all eerie stuff that goes ‘bump’ in the night, the Hum too increases as darkness falls.