[Mrs. Don-o]

To stump a climate warmist in public, ask him when the Holocene Epoch is going to end.

Ask him what is the "ideal" average surface temperature and average air temperature.

Ask him whether a longer growing season would be beneficial or detrimental to agricultural production in latitudes north of 40^o N (where most of the world's landmass is).

Ask him what caused the climate around 1000AD to be sufficiently warm for the north of Newfoundland to support the growing of wine grapes in the Viking colony known as "Vinland."

[DuncanWaring]

Ask him “If you were Emperor of the World, able to issue and enforce imperial edicts to end climate change, what would you look for as evidence that your plans were working?”.

[Starboard]

Ask him what is the “ideal” average surface temperature and average air temperature.

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That’s much like asking a liberal what the top tax rate should be for Americans. They will never answer this directly.