Climate change is there as a reminder that we can get richer and safer societies that are also consuming more and more to the point where the stability of Earth's systems is being challenged at potentially catastrophic levels. I don't think we can stop that. Just the very same worries I have about prediction on the positive progressive side - I mean, predictions that say we'll be great, we'll be fine - also apply to predictions that are too catastrophic. I'm not sure we get those predictions right either.