For those that doubt global warming, and the role that well executed global conventions can play in helping address it, I suggest you have a look at the case of the ozone layer.
Via Chris Rowan’s blog,
Paul Newman (no, not that one) of NASA’s Goddard Centre (who have a nice write-up) and his colleagues play a game of climatic what if: what if the discovery that chlorofluorocarbons (CFCs) destroyed stratospheric ozone had been ignored, and were not phased out in the decade following the signing of the Montreal Protocol in 1987?
You can see more on the NASA Goddard Centre site, but here is the simulation via youtube.
Now of course global warming is more complex, but if we are going to leave this planet in a decent shape for those that follow us, sitting on the fence isn’t really an option. Because sitting on the fence is the same as denying it.