Richard Black, the BBC's online environment correspondent, attracted attention when he noticed that almost all climate sceptics are men. Instead, he might have chosen to comment that many of them were social scientists with leanings towards economics. Coincidentally, economics is populated by males. It is only this year that the first woman won the subject's Nobel prize, and her work would not be regarded as part of the subject by many academic purists. Sceptics Nigel Lawson, Steven Levitt, Bjørn Lomborg, and others all think about the world as economists. That's probably more important than that they are male.