re: #63 mkelly

You leave off one other possibility. Someone who denies CO2 caused AGW because the premise is false.

That is left out because the premise is not false.

You know CO2 really does trap IR. The sun puts out a lot of IR. Energy is conserved.

All that?

Really do try to pass physics 1, and I do mean physics 1 before saying such silly things.

And just to head you off, don’t even start with the carbon lags BS. In some cycles - those caused by orbital variations, CO2 can be a feedback.

IN this case it is a forcing.