Sue McNaughton wrote in message ...
In article , Paul Weaver
writes
On Thu, 19 Aug 2004 12:51:49 +0000, Al wrote:

ISTR that global temperature, while at the upper end of its range over the
last however many millions of years, remains in territory already seen in
nature.

Nowhere near the Jurassic era. And besides, I wouldn't like another ice
age, would you?

Thirty years ago, we were being promised one, which should have started
about four years ago.

Promised? That's a bit strong. There was some speculation based on
trends, but no science.

Global warming is based on a strong analysis of trends and a lot of
science. The halting of the Atlantic Conveyor is more speculative, but
certainly a worry.