James Hansen’s Unexplained About-Face

NASA’s James Hansen has called those who are skeptical of his alarmist predictions about global warming “court jesters.”

But he himself apparently used to believe not only that global warming wasn’t happening, but also that the world was headed for another Ice Age, making carbon dioxide emissions and global warming nothing to worry about.

Given his apparent about-face, is it any wonder that his dire claims continue to be greeted with skepticism?