"cjcampbell" wrote in message
oups.com...

Bob Fry wrote:
"RR" == Ross Richardson writes:
RR What this program stated and I had read it elsewhere, is the
RR magnetic core within the earth had flipped every 200K to 700K
RR years. Geologist know how to figure this out from core
RR samples.

A core sample does not come from the earth's core. It is a sample
obtained by core drilling. You can get a core sample from glaciers, or
even your own skin.

I did that with a pitot tube once; took a core sample of my forehead.

Guess what they found?