They are talking about AGW, and the point is that the science isn't in doubt
Tom has pointed out many pointless things over and over, that does not make him worth listening to on this topic.
There is a well understood cause and effect here- CO2 increase WILL lead to more solar energy being trapped in the atmosphere- PERIOD.
What is important here is what is happening now... we have greatly increased CO2 and other GH gasses- we ARE seeing warming. AGW is a complex issue, but that much is pretty damn simple and unavoidable.
AGW is real- its simply a fact. The only thing to debate is what, if anything, we are willing or able to do about it.
Denying the scientific fact wont change present reality, and will make the future worse.