Well, one thing we do know, it's getting warmer and the weather patterns are changing. I know that sounds like two things but I think it's really one....actually part of one.
The things they keep coming up with, the previously unknown relationships in nature are fascinating. But yes, everyone (I'll bet including the scientists) wants to know how far it can/will go. Considering we can't get an accurate weather forecast, a climate forecast is asking a lot.
If we knew that, it would be possible to figure out what it's going to take to cope with the changes. At least a hell of a lot easier to figure out than actually getting it done, anyway.
Of course we can't worry about the Supervolcanos because there's nothing much we can do about them. If they erupt, millions, maybe billions, dead. Forget politics, Christmas and athlete's foot.....definately a whole new ball game.
Oh....bluesdave, if you figure it all out....you will give UT an exclusive, won't ya?