Some people hear a persistent hum that nobody else notices. Researchers investigated the mystery and found a surprising ...
Daily Mail on MSN
Millions of people hear a constant hum they can't explain - now scientists know why
If you're constantly plagued by a bizarre humming noise, scientists now have an explanation for it.
Do you occasionally hear a low buzzing or humming sound that doesn’t have a clear source? Then you’re among the estimated 2-4 per cent of the world’s ...
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