"The biggest thing nature did to fight climate change..." ...has always been the absorption of CO2 in the rocks of the Earth's crust. Or hasn't it? Well, this

"The biggest thing nature did to fight climate change..." ...has always been the absorption of CO2 in the rocks of the Earth's crust. Or hasn't it? Well, this process is still working, but it won't be working for long, since there's almost no CO2 to absorb anymore.