A mysterious throb deep in your bed
I get that too, but it stops if I don't put quarters in it...
We think we know so much. For every answer and breakthrough, a hundred more questions unpeel and spin off into the ether, beckoning us to follow. Maybe the Hum is just the Earth itself, doing what it's always done, vibrating low and deep, singing its timeless tune, occasionally reaching a pitch baffled bipeds can barely hear. Maybe it's the shift of the planet itself, the poles calmly realigning for the giant 2012 metaconscious whoopjamboree. Maybe the great goddess left her vibrator running. Again.
Creepy. Fascinating and entertaining too. Enjoy.