The Catholic point of view is to leave science to scientists. Science being defined as the study of physical existance. Because of that, I've had the better of these arguments using science articles. The global warming types always attempt to portray any argument against them as anti-science so using a specifically theological source is counter productive (unless the source is a scientist who is also clergy).
Heres one Researcher: Basic Greenhouse Equations "Totally Wrong"
The basic idea is to inform that this isn't settled science and there is no scientific concensus. That makes the celebration of Earth Day and it's viewpoint just another political stance.
Well yes, but I don't intend to use the parish newsletter to pit one person's atmospheric gases against another's! That's exactly why we can't do a proper "critique" of CO
2-based AGW vs. somebody else's solar-cycle model.
I'd like to stick with just the Genesis-based moral obligation to protect God's Creation (in general) and if I have to mention "Climate" at all, just note that all these hypotheses are controversial, even dubious.