I caught most of Costing the Earth today, in which some of the problems with mainstream climate science were discussed. It featured a bunch of alarmists and ex-alarmists discussing aspects of the science that they had until quite recently decried sceptics for mentioning. Towards the end they wondered whether sceptics shouldn't perhaps be admitted to the debate. I'm not sure that they quite grasped the irony of this position and certainly, when the presenter asked about sceptics being presented as crackpots, nobody deigned to answer.