[ILLUSTRATION OMITTED] THERE HE was, gnomically staring out from the cover of the March 29, 2009, New York Times magazine. The accompanying article proclaimed Freeman Dyson as a global warming heretic. Was he actually allying himself with the know-nothing, business-as-usual conservatives who viewed the climate-change scare as a great mistake or, worse, a hoax? The article provoked letters to the editor and a squall of pelting blog entries, some calling Dyson a fool, others extolling him as a heroic defender of scientific freedom.