rationalskepticism.org

I've been battling with my father over the concept of AGW and CO2's role in it. He's a smart man, worked as an electrical engineer for Hughes Aircraft company and knows a lot about the absorption wavelengths of CO2 and keeps arguing that the light that is absorbed is absorbed to extinction before hitting the surface of the earth and therefore adding more CO2 will not increase absorption.

Thanks to my favorite YouTube channel I now have a better explaination for him.