Dozens Say They Still Hear Weird ‘Hum’ Over Missouri & Illinois

I heard this strange sound myself just a few days ago while waiting outside of a store in Canton, Missouri. It's best described as a low-frequency hum and there are still dozens of others in both Missouri and Illinois who say they've heard the same.

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What is the "hum"? Wikipedia explains what many of us have heard:

a name often given to widespread reports of a persistent and invasive low-frequency humming, rumbling, or droning noise audible to many but not all people

It was a widely-reported phenomena starting a few years ago and was even featured on a documentary on The History Channel.

Many have tried to debunk the "hum", but there are still dozens of reports in both Missouri and Illinois from The Worldwide Hum website.

Here's one of the reports from a 47-year-old female in Missouri:

An almost imperceptible very low frequency sound/vibration with a steady rhythm...I notice it when I lay down to go to sleep and all else is quiet.

A 46-year-old male in west-central Illinois added his report saying:

Very low hum. Sounds like a diesel engine idling blocks away. (Womwomwomwom)

He added that he first heard the "hum" back in 1990 and still hears it today.

This is just the tip of the iceberg. The Worldwide Hum is an on-going discussion where you can submit your own report and experiences. The skeptics sometimes claim that this phenomena is the result of some people focusing too much on background sounds. For those that still hear it, it's not nearly that simple. Many would love to know what in the world (literally) that low drone-like sound is originating from.