Gunner wrote:


A survey completed last year by Dr. Murray Mitchell of the National
Oceanic and Atmospheric Administration reveals a drop of half a degree
in average ground temperatures in the Northern Hemisphere between 1945
and 1968. According to George Kukla of Columbia University, satellite
photos indicated a sudden, large increase in Northern Hemisphere snow
cover in the winter of 1971-72. And a study released last month by two
NOAA scientists notes that the amount of sunshine reaching the ground in
the continental U.S. diminished by 1.3% between 1964 and 1972.


Global temperatures have been declining for 10's of millions of years.
Then, 3 million years ago, perhaps for the first time ever, both polar
regions became covered with ice. Since then we've been bouncing in and
out of an "ice age", mostly in.

It's been good for humans though, evolutionarily speaking. Homo
sapiens was basically born of the Ice Age. The possible impact of an
ice age on civilization is another question altogether; it would
probably thin out the herd a bit.

Drew