Art Unwin wrote:
We can learn about that and past environments by
examining the different layers of ice.

You're right, Art. The last Global Warming cycle
peaked about 8000 years ago and ever since, the
average temperature has been drifting down toward
the next ice age. That is obvious to anyone who can
read a graph.

http://upload.wikimedia.org/wikipedi...core-petit.png

Global Warming is the second biggest hoax ever
perpetuated upon mankind.
--
73, Cecil, IEEE, OOTC, http://www.w5dxp.com