Wednesday, April 23, 2008

Earth's quiet symphony

Came across this story on the LiveScience website:

Earth gives off a relentless hum of countless notes completely imperceptible to the human ear, like a giant, exceptionally quiet symphony, but the origin of this sound remains a mystery.
Now unexpected powerful tunes have been discovered in this hum.

Fascinating to think about, yes?

Here's a link to the column by Mark Morford (of the SF Chronicle) that brought me to the original story.

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