Despite total lack of observational evidence, the cognoscenti on both sides of the "debate" continue to believe in the radiative forcing ability of one gas within another, quite ludicrous, but they won't hear a word against it.
The only "debate" then is about the "degree of warming" caused by carbon dioxide rather than the total lack thereof.
As per Philip's other leaflets
, the only effect that carbon dioxide can have is one of extra efficient cooling, not warming - Hans
Click this link to see Hot Spot
by Peter Foster (note this document is side ways on and you will have to use the "clockwise" adjustment.