I just learned about "saturation theory" over at Small Dead Animals (SDA).
The theory is this: C02 occupies a very narrow spectrum affecting blocking of the sun's rays. It's like a flashlight shining on a billiard table. Without any balls (C02) on the table, the light goes straight through to the other side of the table. For every billiard ball added to the table, the probability increases that some light will be reflected.
But. At some point, adding additional billiard balls will have no further effect, because there are sufficient balls already on the table.
Some scientists are saying this point has already been reached with C02, and adding more C02 into the atmosphere will have no further effect.
We need more science, and less catering to anti-western, fear-mongering activists.
And that's the way the (billiard) Ball bounces.