Warming, cooling, "climate change"... so what? The global climate has changed many times in the past. Sometimes no ice caps, sometimes everything but the the equatorial and some parts of the temperate zones covered in ice.
The big hype is to allow your rulers to increase control of you. Now, if they used that control to address the cause of problems resulting from climate change, that would be a good thing. But even your rulers are not brave enough to address the real problem -- massive overpopulation.
Even with populations orders of magnitude less than that today, even minor climate changes have cause huge turmoil -- wars and mass migrations.
The climate will change, warmer, colder, whatever. Sea levels will rise and flood all the coastal cities, then retreat again. And since billions of people live less than a few dozen feet above present sea level -- let the games begin. Where are they going to go? What crops will they be able to grow underwater? (Forget the fish, they are going due to overfishing.)
Call it nature's birth control, since human culture and religions have allowed the job to be done.
I could go on, but why bother?