From: "Robert Comer" 

> 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.

The 95% one wasn't because of that, it was a rather long running volcano
line that raised the CO2 levels enough to raise the temp 5 degrees, then
with that 5 degrees, all the methane hydrate in the oceans melted and that
cause a raise in temp of another 5 degrees.  Just replace that volcano
effect with the sun and our own effect and the possibility is there.
(Permian-Triassic extinction )

>When the temperature goes up, life flourishes.

Not with that much of a raise.

--
Bob Comer


"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.
>
>

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