In 1997, the Bloop was heard on hydrophones across the Pacific. It was a loud, ultra-low frequency sound that was heard at listening stations underwater over 5,000km apart, and one of many mysterious ...

As Ireland's Dara Ó Briain once joked on YouTube, "Science knows it doesn't know everything, otherwise it'd stop." The world is full of mysteries to solve and curious subjects to study, and no part of ...

IN THE summer of 1997, an array of underwater microphones, or hydrophones, owned by the US government picked up a strange sound. For a minute, it rose rapidly in frequency; then it disappeared. The ...

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