Talking about the shielding effect of the carbon dioxide portion of the atmosphere, in keeping radiant heat from escaping from the globe into space.
I understand what he is saying.
My point is this, what is “normal shielding”?
Is there such thing as “partial” shielding or is it like being “just a little bit pregnant”?
The atmosphere either shields or it doesn’t, if it does, we’re fine, if it don’t we’re so screwed.