A Mysterious Hum Has Plagued the Earth for 50 Years. Scientists May Have Finally Found Its Source.

Since the 1970s, people across the world have reported hearing an inexplicable low-frequency droning. Scientists now think ...
ScienceAlert on MSN

Mysterious Global 'Hum' Has Tormented People For 50 Years – Scientists Think They May Have Found a Cause

(Jun/Getty Images Plus) For decades, some people around the world have reported hearing a strange, sonorous background tone that others could not. Named 'The Hum', the phenomenon regularly appears on ...
The Daily Galaxy on MSN

Scientists may have finally found the source of the mysterious hum heard for 50 years

For more than half a century, people across the world have reported a strange low-frequency sound often described as a ...