Are aliens trying to contact us?

Taos Hum

It is a constant, annoying and mysterious low frequency humming sound that is faintly heard in Taos, New Mexico. 

No matter how many scientific attempts have been made, the source of the hum remains to be undetected. 

The sound was first officially reported by the residents of Taos in 1993.
Some describe it as a constant annoying humming sound, some describe it as a whir or a buzz as well.
Even visitors to the city of Taos have reported hearing the hum.
Many people claim that they have been hearing faint beats between the perceived tones.
There are many side effects of the Taos hum reported by locals, such as sleep disturbances, headaches and dizziness, increased pressure on ears, abrupt nosebleeds, and loss of libido.
A theory suggests that the hum is an outcome ultra low frequency RF signals that are getting emitted by the molten core of earth.
Some suspect the US Navy ELF (Extremely low frequency) stations that are based out of the Michigan Peninsula and Wisconsin are the possible sources of the hum.