Roger Chapman wrote:

At the basic level it demonstrated that CO2 is a greenhouse gas
(despite what Dennis claims) but then that is not exactly news. The
greenhouse effect has been known about for at least 100 years.

If it was first noticed 100 years ago, it's fairly safe to say that it had
been occuring for centuries before that, so how is it mankind's fault, when
the world population 300 - 400 years ago was a tiny fraction of what it is
now, and virtually none of them used fossil fuels?

--
Phil L
RSRL Tipster Of The Year 2008