I actually agree with Uwil and paulaplumpbottom. In particular, paulaplumpbottom makes the point about scaremongering. my fear is that if we shout too long and too hard too soon, people will have stopped listening when it gets reall yimportant.
My dh has a geography degree and had a particular interest in climatology (and glacial geomorphology). He is still not convinced about the evidence - purely because the earth works on such long cycles, we still don't full understand the mechanisms that make it heat up and warm down.
I can still remember about 20 years ago the scaremongers telling us all that we were doomed as we were about to enter another Ice Age. Apparently, some of the same people who argued that are now arguing the case for global warming. Such inconcisitency allows those with vested interests to choose not to listen to them.
The report that was issued with such a fanfare last week was a summary of a draft report by a working group (the first of three) which has not even been issued yet! . Changes are now only allowed to that report will now be written to "fit" with what the summary says. That is just bad science.
From IPCC procedures in section 4:
"Changes (other than grammatical or minor editorial changes) made after acceptance by the Working Group or the Panel shall be those necessary to ensure consistency with the Summary for Policymakers or the Overview Chapter. "
So the purpose of the three-month delay between the publication of the Summary for Policy-Makers and the release of the actual WG1 is to enable them to make any necessary adjustments to the technical report to match the policy summary. Unbelievable. Go read for yourselves.
And before anyoone asks, no I haven't read the summary myself - but my dh has - and has also read an embargoed version the second draft of the report (which was much more equivocal).
FWIW, I happen to agree that Man probably is having an impact and that we should do what we can do minimise that.
But if governemnts really were serious about it, they would
a) tax aviation fuel (at present untaxed in the UK - not sure about elsewhere), which gives flying an unfair advantage
b) be more suportive about nuclear power ( - but at least it doens't emit CO2)
c) be serious about public transport: trains in this country are exptritionate, whereas in France the public rail system is cheap and easy to use (we are flying to Paris from Glasgow and then getting the train to the Alps: to do it all by train would have been extortionate). Peak time train fare between Glasgow and Edinburgh is just crazy.