I have to do some research on the greenhouse effect (the physics of it anyway) I am not to familiar with the topic and am on a tight schedule. If anyone has some interesting links, thoughts please share. I am interested in the role of clouds in GHG (greenhouse gases), how much do we know about this? also any thoughts on Gerlich & Tsceuschnur paper (Falsification Of The Atmospheric CO2 Greenhouse Effects Within The Frame Of Physics) here is a link if anyone is interested http://arxiv.org/pdf/0707.1161v4.pdf In the abstract they say The atmospheric greenhouse effect, an idea that many authors trace back to the traditional works of Fourier (1824), Tyndall (1861), and Arrhenius (1896), and which is still supported in global climatology, essentially describes a fictitious mechanism, in which a planetary atmosphere acts as a heat pump driven by an environment that is radiatively interacting with but radiatively equilibrated to the atmospheric system. Ac- cording to the second law of thermodynamics such a planetary machine can never exist." how true is this? are these guys credible? anymore relevant information on absorption/emission properties of molecules? Line broadening? CO2 line saturation. I'm confused I went from one physics teacher telling me it was a load of garbage because of the clouds and the oceans. Now I have my new physics prof. telling me it's all true and it's very alarming? Im only a student with limit knowledge and it's hard to find information that isn't to abstract but not to "blanket over the earth" analogues. Please any input is greatly appreciated. And please just keep to the physics of it I don't care about the "debate".