OK,let's say that tha article Peace linked to is right- it sounds knowledgeable, although I don't like its occasional grammatical lapses such as using "lay" for lie and "it's" for you know what - it is high time that we started adapting to the changes. I see no reason for anyone to deny that on a local level events are deteriorating dramatically and I think it is entirely possible that there is a tipping point at which conditions become unsustainable very quickly.

So how do we adapt? Do we let nature take its course, do we give up on and abandon arid continents and lands and their populations? Do we let large animals like polar bears die?