“The proof that CO2
does not drive climate
is shown by previous
glaciations.
The Ordovician-Silurian
( 450 to 420 million years ago )
and Jurassic-Cretaceous
( 151 to 132 million years ago )
glaciations occurred
when the atmospheric
CO2 content
as more than 4,000 ppmv
and about 2,000 ppmv
( ppmv = parts per million by volume )
respectively.
The Carboniferous
-Permian glaciation
( 360 to 260 million years ago )
had a CO2 content
of about 400 ppmv,
at least 15 ppmv higher
than the present figure
(in 2009).
If the popular
catastrophist view
is accepted,
then there should
have been a runaway
greenhouse (warming)
when CO2 was more
than 4,000 ppmv.
Instead there
was glaciation.
Clearly a high
atmospheric CO2
does not drive
global warming
and there is no
correlation between
global temperature
and atmospheric CO2.
This has never
been explained
by those who argue
that human additions
of CO2 to the atmosphere
will produce global warming.”
Professor Ian Plimer
(from page 165 of his 2009 book: “Heaven and Earth”)
Plimer was a two-time winner
of Australia’s highest scientific honor,
the Eureka Prize, and a professor
in the School of Earth and
Environmental Sciences
at the University of Adelaide.