How The Hum Works

Stuff You Should Know

• Episode: How The Hum Works
• Website: Stuff You Should Know
• Feed URL: http://www.howstuffworks.com/podcasts/stuff-you-should-know.rss
• Duration: 00:43:23
• Published: 2014-12-09 15:59

There is a mysterious droning sound often described as like a diesel engine idling that is severely impacting the quality of life of 2 percent of people in places around the world. The thing is, no one knows what’s causing it – or if it actually exists.