Another
mystery hum is driving people nuts, and this time it's in New
Zealand—and, yet again, the locals have no idea that this is a
worldwide phenomenon.Massey University researchers are investigating an unexplained hum that hundreds of people are reporting, but other people cannot hear. As usual with these hums, some people are actually being made ill by the incessant tone.
When you can't get a song out of your head, US researchers call it an ear worm. But there's no such term for a hum that won't go away, despite the fact that many major US cities have been affected by such noise.