Yesterday I posted an item about an obvious hoax study that claimed to find a completely natural cause for global warming.

Well, I thought it was obvious – too good to be true – and my colleagues and I sussed it after a couple of minute’s fact-checking. Sadly, I am informed that Rush Limbaugh has fallen for it – my contact says “he’s going on and on about it now.”

This will leave a mark. How can I put it? Skepticism requires skepticism.