Back to basics

Empirical evidence that humans are causing global warming

While my position is to concentrate on ocean acidification as sufficient reason to urgently seek a reduction in CO2, I have been complaining for some time that the popular skeptical pundits against global warming seem to show no interest at all in applying any degree of skepticism to the arguments that they think bolster their position.

So it's worthwhile going back to basics, and the always readable Skeptical Science blog has an excellent post (see above) on why it is known that CO2 is causing warming.