"Chuck Gould" wrote in message
oups.com...

Jeff Rigby wrote:


We must remember that life evolved in high Carbon dioxide environments
and
we can thrive in levels MUCH higher than exist today.

You mean back when living to 29 was considered an "advanced age"? :-)


It seems to be that real lifespan has not changed much over the years.
Average has gone up, as lots of childhood diseases have been arrested. As
well as accidents do not kill as many. Due to antibiotics. And to have the
ocean turn more acidic, I think there would have to a lot of samples taken
over a huge area. Just the shear quantity of water could absorb a lot of
CO2 before a noticible pH change could be recorded.