It's a mystery that has baffled hundreds across the city for more than three decades.
Over the years, many have claimed it to be nothing more than a myth, but for those who were kept awake at night by the "Bristol Hum", it was very real.
But now scientists believe they may have finally solved the mystery behind the noise which infuriates some but leaves others shrugging their shoulders. French researchers have offered an explanation of what could have been causing the low droning that has plagued some Bristolians for all these years – and it's not wind turbines, power lines, or even UFOs, as suggested over the years.
According to a senior research scientist at Centre National de la Recherche Scientifique, the elusive humming sound, which is now reported much further afield, is actually caused by the pressure of waves vibrating on the ocean floor. . . .
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