[snip] ....What's going on? "The desire to disbelieve deepens as the scale of the threat grows," concludes economist-ethicist Clive Hamilton. He and others who track what they call "denialism" find that its nature is changing in America, last redoubt of climate naysayers. It has taken on a more partisan, ideological tone. Polls find a widening Republican-Democrat gap on climate. Republican presidential candidate Rick Perry even accuses climate scientists of lying for money. Global warming looms as a debatable question in yet another U.S. election campaign. From his big-windowed office overlooking the wooded campus of the Lamont-Doherty Earth Observatory in Palisades,...