Some facts, and some conclusions about climate change:
1. CO2 levels are rising from about 280 ppm preindustrial to about 410 ppm today. Fact.
2. CO2 is a known green house gas. (Without it, our climate would be considerably cooler.)
3. More CO2 should contribute to a warming climate, how much and when is debatable.
4. Glacial and arctic ice has been retreating for decades now, Antarctic ice is a more complex story apparently.
5. Various MODELS predict overall warming of our climate over the next 80 years or so by up to 7°C if nothing is done. The goals are to try and keep this under 2°C. 6. Apparently we already have warmed about 1°C.
I don't think anyone argues with any of that, you can certainly say the models are wrong (they certainly are). All models are wrong, some are useful.