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Bill wrote:

> Perhaps a dumb a_s question implying a non-existent
> correlation, but could a growing temperate region also be
> known construed as global warming in the arctic region?  We
> hear about that in the news, but nothing about Antarctica.

I do not think that the slow secular change in the obliquity of the ecliptic
has much to do with the current shrinking of the polar ice caps or tropical
vegetation.

The current warming up of the earth is caused by other processes, most of
which appear to be the result of our wasteful spending of natural resources.

On longer timescales, the variation in the obliquity of the ecliptic may
have climatical consequences and several theories have been proposed in past
linking these variations (and others in the earth's orbit) with the Ice
Ages. See the discussion in

http://en.wikipedia.org/wiki/Milankovitch_cycles

* Robert H. van Gent
* E-mail: r.h.vangent@astro.uu.nl
* Homepage: http://www.phys.uu.nl/~vgent/

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