[kj] The Hum

[Neil Perry]

http://www.guardian.co.uk/life/science/story/0,12996,1316162,00.html

Here it is.. The Hum.


Scientists rumble Earth's hum

David Adam, science correspondent
Thursday September 30, 2004
The Guardian

Scientists have solved the mystery of a global hum
which has plagued them since it was discovered in
1998.

The constant drone at low frequencies, well below the
range of human hearing, shows up in seismic
measurements but cannot be explained by events such as
earthquakes.