How can an additional 0.0024% of atmospheric composition do all these incredible things?
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It's interesting to see that the point you seem to most struggle with isn't actually a scientific one, but more of a question of imagination.
I think we can say now that we know that the CO2 released by human acitivity is effecting the climate, and is having a profound effect on glaciers and polar ice - and how it does so is fairly well understood.
Do you also doubt the existance of gravity?
We can also say that the Temperature of today is approaching the temperature of 5000 years ago and about a degree cooler than the temperature of 8000 years ago.
Since what I have written is something that actually happened and can actually be demonstrated by the growth of today's glaciers from points more receded than today from that point in time, why must we assume that Anthropogenic CO2 is the cause of the current warming.
During this interglacial, we have been warmer than we are now and that was thousands of years before the Industrial Revolution.
The cooling of the Little ice Age ended and reversed hundreds of years before the Industrial Revolution.
The mere fact that the climate is changing does nothing to isolate a cause. You need to isolate a cause before you can say, "I think we can say now that we know that the CO2 released by human acitivity is effecting the climate, and is having a profound effect on glaciers and polar ice - and how it does so is fairly well understood."
Correlation is not causation and similar effects to those that you cite absent the cause you cite would seem to prove that you are jumping to an unjustified conclusion.
The only question following that is why are you doing this and the answer will demonstrate why this is a political topic.