If their predictions have not come true by then, let's hang 'em..
Now all we gotta do is get them to sign an agreement to the terms....
No, 'cause they can NEVER lose.
If things get "worse" (and who really defines that?), then their predctions were right and we didn't do enough to stop it.
If things get "better," it's because they warned us in time, thank God.
If things don't change, well, hey, there's still melting ice, bad hurricanes, and whatever, somewhere, all a result of what they predicted, and proof that things are getting worse, or maybe better, or whatever.
Oh, good one. I second that.