Dr. Glen MacPherson doesn't remember the first time he heard the sound. It may have started at the beginning of 2012, a dull, steady droning like that of a diesel engine idling down the street from his house in the Sunshine Coast of British Columbia. A lecturer at the University of British Columbia and high school teacher of physics, mathematics and biology, months passed before MacPherson realized that the noise, which he'd previously dismissed as some background nuisance like car traffic or an airplane passing overhead, was something abnormal.
"Once I realized that this wasn't simply the ambient noise of living in my little corner of the world, I went through the typical stages and steps to try to isolate the sources," MacPherson told Mic. "I assumed it may be an electrical problem, so I shut off the mains to the entire house. It got louder. I went driving around my neighborhood looking for the source, and I noticed it was louder at night."
Exasperated, MacPherson turned his focus to scientific literature and pored over reports of the mysterious noise before coming across an article by University of Oklahoma geophysicist David Deming in the Journal of Scientific Exploration, a peer-reviewed academic journal devoted to exploring topics outside of mainstream science. "I almost dropped my laptop," says MacPherson. "I was sure that I was hearing the Hum."
"The Hum" refers to a mysterious sound heard in places around the world by a small fraction of a local population. It's characterized by a persistent and invasive low-frequency rumbling or droning noise often accompanied by vibrations. While reports of "unidentified humming sounds" pop up in scientific literature dating back to the 1830s, modern manifestations of the contemporary hum have been widely reported by national media in the United Kingdom, the United States and Australia since the early 1970s.
For the rest of the story: http://mic.com/articles/91091/a-mysterious-sound-is-driving-people-insane-and-nobody-knows-what-s-causing-it