Hundreds of readers responded to an article about the phenomenon, with many claiming to have experienced it themselves
Some of you first heard it in the 70s. One of you heard it on a hot summer’s day on Hampstead Heath, in London. And one of you even wrote a poem about it.
On Wednesday Philip Jaekl reported on a mysterious phenomenon known as the Hum. Up to 4% of people around the world are thought to hear the strange, low-pitched noise. Its actual source is unknown, though many hearers are in urban areas, suggesting it could be some form of noise pollution.
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