At one time Nebraska was a tropical paradise. In fact, the fossil record suggests that balmy climate was perfect for horses, zebras, elephants, and rhinos to flourish, actually originating in North America not Africa. The mean temperature of the earth over time is high enough that polar ice caps are the exception not the norm. It is only cataclysmic events like a super volcano beneath yellow stone that eliminated life in Nebraska or asteroid hits that fostered in ice ages. You can see evidence of the ice ages a few miles north of Bloomington. The change in topography at Martinsville shows exactly where the glaciers stopped.
The sun's destiny is to one day expand to consume the earth. It is getting closer all the time. Something about Hydrogen fusing into Helium and expanding volume, or so I've been told. Solar activity in the form of flares can change the climate to be warmer for periods of time. Temperatures are actually lower in the last ten year period than the ten prior. It has been suggested that flares play a part. Unfortunately, no mathematical algorithm is in existence that can pinpoint the actual root cause.
Water levels have traditionally been much higher on planet earth than they are today. The fossil record in deserts and caves support this statement. How else do you find a fish in a place as dry as bone. The tendency of things is regression to the mean, warmer temps and higher water levels. Given the expansion of the sun, things will predictably grow hotter over time. Climate change is a forever reality.
Humans can take actions to cool things off. Exploding numerous nuclear weapons is one option. Nuclear winter will ensue and a new ice age will emerge. Satellites can be launched into the Kuiper Belt or asteroid belt and use collision and gravity to direct an asteroid or comet into the earth. Otherwise we are stuck with sitting around and praying that a super volcano can erupt and usher in a new era while pretending that the changes are human caused and nonsense like electric vehicles, windmills, and solar panels will change the inevitable in some way.
If Biden really cared about stopping climate change, he'd fire off all the nukes at his disposal. Being unwilling to do that, it's just talk.
I do believe in climate change (in terms of flat earth, it depends on your perspective. Those familiar with the concept of tanget would say at any given point on the curve, it's flat. However viewed from outside, it's a sphere.)