[uecker]

That CO2 emissions will cause warming was predicted first by Arrhenius Svante in 1896. While accurate modelling of all effects may be difficult, the basic effect follows from fundamental physics. There is really no excuse for doubting this.

[vel0city]

The basic ideas go back even further than that. Eunice Newton Foote's "Circumstances Affecting the Heat of the Sun's Rays" was published in 1856.

https://en.wikipedia.org/wiki/Eunice_Newton_Foote