Kate. A climate forum seems a good idea. I read the comments re. climate although I don't think I have made any myself. I'm not persuaded one way or t'other yet. Astronomy might be another category. The Asian flu post hasn't attracted much comment lately.

It would be a little unfair to prevent creationists posting comments. Some could surely have a rational outlook on some science subjects. Besides, could you get people to state their religious beliefs before they join? I doubt it.