CO2 problem
The concentration of CO2 was , since the beginning of the earth, always within a small bandwidth. The nature itself takes care for the emission and the binding.
This natural binding is (among others) taking place by the conversion of plants to fossil fuels and Carbonisation (olivine weathering).
The amount of natural binding is appr. 2,5 Billion tons.
By human influence is the CO2 emission increased 10 fold, from 2,5 Billion tons to 25 Billion tons.
The nature can’t handle this extreme increase, so the CO2 content in the atmosphere and the oceans is increasing and the greenhouse effect is increased.