From: "Rich Gauszka" 


"Geo"  wrote in message
news:445ffe8b$1{at}w3.nls.net...
> "Robert Comer"  wrote in message
> news:445fde98$1{at}w3.nls.net...
>
>
>> possibility.  We've had 95% mass extinctions just because the temperature
>> went up 10F.
>
> It seems to me we've had mass extinctions because of abrupt change due to
> meteor strikes or because if ice ages but not because the temperature went
> up. When the temperature goes up, life flourishes.
>
> Geo.
>
>

The raising of temperature and the release of  frozen methane hydrates from
the ocean  may have caused the worst mass extinction in history. It's still
subject to debate whether the release was due to global warming, meteor
strike or volcanic activity or a combination

http://www.abc.net.au/science/news/stories/s938770.htm

The situation would have been much worse in the Permian era, he said.
Ryskin calculated that prehistoric oceans could easily have contained
enough methane to liberate an energy about 10,000 times greater than the
world's entire nuclear weapons stockpile going off at once.

--- BBBS/NT v4.01 Flag-5