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' May Be a New Form of Tinnitus

(Yurii Yarema/Creatas Video+/Getty Images Plus) For decades, some people around the world have reported hearing a strange, ...
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 ...