Michael Mann claim: "As to the quality of Happer’s climate science, well that’s hard to speak to because he doesn’t actually do any climate science, and never has."
Climate Depot response: Mann is massively incorrect on this key point. Claiming Dr. Happer "doesn’t actually do any climate science, and never has" is an outrageous distortion of science and Mann should retract this claim. Former Harvard Physicist Dr. Lubos Motl responds to such charges about Dr. Will Happer: "When it comes to the main physical effect that is supposed to drive "climate change", he's not only an expert. He's one of the world's leading experts."
Mann: "The science doesn't support this the best carbon cycle scientists who have studied this problem say 'yeah there's a certain amount of methane that we it could be mobilized and it will add to the warming, but it's a small contribution compared to the warming we are causing by the burning of fossil fuels.'"