Where have all the climate change jokes gone?

Why can’t anyone tell a good joke about climate change? I don’t mean “Climate Change? That’s a joke in itself”. And I don’t mean jokes in the Leno/O’Brien/Letterman-style: ‘Scientists are warning that if climate change gets any worse even Hilary Clinton will thaw out’. I mean funny ones. Where are they?
The Times wrote about this and the online comments were as miserable, mean-spirited and loopy as usual with this subject. Humour hardly began to get a look-in. The same happened a year or so ago when the Guardian ran a very similar piece.

If anyone has a good joke about climate change I’d love to hear it.