Climate scientists are shaking their heads in disbelief over a press release from the UK's University of Leicester about a "new theory to explain global warming." According to a Russian researcher, rising global temperatures are the result not - as is now nearly universally accepted among climate experts - of increased carbon dioxide levels but of a meteor that crashed in Siberia at the turn of the century.

Imagine it: You're sitting on an airplane about to take off on a long flight, or you're at the holiday dinner table with your in-laws, and the person next to you

Ever wonder what climate change experts talk about when they get together? The blog Daily Kos gives you a chance to find out – well, at least to “listen” in on a virtual roundtable discussion with three renowned climate scientists. Daily Kos sat down for an online chat with Dr. Michael E. Mann, director of Penn State’s Earth System Science Center; Dr. Gavin Schmidt, a climate modeler with NASA’s Goddard Institute for Space Studies in New York; and Dr. Stefan Rahmstorf, an oceanographer with the Potsdam Institute for Climate Impact Research.