By Angela Dewan, CNN

As podcaster Joe Rogan faces condemnation from medical scientists for spreading misinformation about vaccines and Covid-19, another interview by the controversial host this week has become the subject of mockery — this time among climate scientists.

Canadian clinical psychologist Jordan Peterson appeared on “The Joe Rogan Experience” on Monday, making false and generalized claims that the modeling scientists use to project climate change and its impacts are flawed.

In waffling remarks, Peterson said that “there’s no such thing as climate, right?” He then went on to mock “climate types,” who he said typically suggest that “climate is about everything.”

“But your models aren’t based on everything. Your models are based on a set number of variables. So that means you’ve reduced the variables — which are everything — to that set. But how did you decide which set of variables to include in the equation if it’s about everything?”

Rogan, whose podcast is hosted on Spotify, did little to challenge the unsubstantiated comments.

Peterson’s remarks show a general misunderstanding of how scientific modeling works. Scientists use models, or simulations, to project particular aspects of climate change, such as the rise in global temperatures, changes in rainfall patterns and the likelihood of drought.

Climate scientists are now ridiculing Peterson’s claims.

“Such seemingly-comic nihilism would be funny if it weren’t so dangerous,” Michael E. Mann, a climate...

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