Here:
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EvC Forum: Polar ice caps and possible rise in sea level -->
EvC Forum: Polar ice caps and possible rise in sea level
And he does indeed implicitly claim an understanding of physics at PhD level (I'd love to see him try to deal with QM or General Relativity - even at graduate level - on the basis of "common sense" :-)
The particular subject in question seems to be under discussion in the "Existence of Noah's Ark" thread. Even there Riverrat seems to be doing badly.