Ah come on, the ability of CO2 to absorb parts of the electromagnetic spectrum in the range of infrared radiation (heat radiation) isn't something new and is scientifically provable.
With that scientifical fact as cause you have your causality.
And if tyrants take me, And throw me in prison, My thoughts will burst free, Like blossoms in season.
Foundations will crumble, The structure will tumble, And free men will cry:
Thoughts are free!