Our resident cartoonist Josh writes:
Apparently Michael Mann has a new book out where he describes a whole new slew of climate change ‘D words’, but which sound, as ever, like he is describing himself… “dissembler, deceiver, downplayer, divider, deflector, doomer, delayer, distractor.”

Dotard.
Dunderhead.
If he adds “dumber than a box of rocks” to his list, it will be more accurate.
Explains a lot. At his age he should have got through the whole alphabet by now but still stuck at D. D as in dimwit.