I believe that most weather predictions are accurate for a warming
period. There is little that man did and can do to prevent it. I would
like to breath clean air however. I would like to see a reduction in
acid rain. These and other events/issues are man made.
john
Moontanman_at_aol.com wrote:
>In a message dated 8/25/02 2:12:01 PM Eastern Daylight Time,
>tcmajorr_at_westol.com writes:
>
><< This is the case with many properties in western PA including my own-
> which I have watched transform over the course my short time on Earth.
> >>
>Most climate models main flaw is the fact that humans are so short lived. The
>Earths natural state is much warmer than it is now, to us it's seems warm
>compared to the most recent ice age but go back just few million years and
>the earth was a much warmer place with very little in the way of ice caps and
>much higher sea level. Mostly short cold periods are separated by long
>periods of very warm conditions. Even during the so called reign of the
>dinosaurs there were short glacial periods every few million years. The most
>believable theory is ocean currents, continental drift, and calm periods of
>volcanism are the main reason for ice ages. As the sun ages it also gets
>warmer. The Earth is doomed to get warmer eventually ending up much like
>Venus, hopefully many million years from now, the last estimate I have seen
>was at least one billion before the oceans boils away. Many factors control
>the earths climate most are positive or negative feed back type effects that
>will keep the earth cool enough for life for a long time. the last time these
>effects failed was about 700 million years ago when it is thought the entire
>earth was covered by ice. Oddly that was when animal life as we know it first
>appeared so we may owe our very existence to the earth almost becoming locked
>in a permanent frozen state. It is thought that a huge upswing in volcanic
>activity was what saved the earth from being a glistening white snow ball
>forever. So much heat was reflected back into space that without a tremendous
>build up a greenhouse gasses the earth would still be a snow ball to this
>day. Not long after the snow ball earth the polar caps disappeared completely
>coming and going again after a few dozen million years but never covering the
>oceans again.
>
>Moon
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