Seems we are not the only ones discussing this.
This thread contains contributions from all over the World - and it seems that people are putting together several theories : from stressful living - depression to ELECTRONIC INTERFERENCE ( as I have done )
www.abovetopsecret.com/forum/thread533575/pg1
I am convinced that things are not right. It could be digital transmissions effecting us all - who knows......maybe our brains actually receive digital signals in some way that has not yet been discovered.......or maybe the Governments know this already and are using it......
The HUMMING thing has been on TV - some places in the UK where people here a deep hum or rumble at night.......never been proved what it is despite TV and Newspapers investigating.