See More Hear More Watch More Hear More Get on iTunes
Stuff Should Know stuffshouldknow

How the Hum Works

There is a mysterious droning sound often described like a diesel engine idling that is severely impacting the quality of life of 2% of people in places around the world. No one knows what’s causing it – or if it actually exists. http://goo.gl/yUuCqm

UP NEXT

More from