They should read some geology.
Over the past million years, the Sahara desert had river beds, the Mediterranean Sea pretty much dried up, the Great Lakes were formed by giant glaciers and the Native Americans walked here when Eur-Asia was connected to North America and warm enough for hunter-gatherers to get it done.
This “OMG!!! CLIMATE CHANGE!!!” started in the late 60’s.
Add in Acid Rain!!! and the Holes in the Ozone!!! We should have been annihilated 20 times by now.
Crap on steroids.
Create fear for control.