I liked RustNeverSleeps' comment on this image, which he found on yet another interesting climate blog, Signs from Earth.
"Why is this so bloody hard to comprehend?"
The only thing we can be sure of about the future is that it will be absolutely fantastic. So if what I say now seems to you to be very reasonable, then I have failed completely. Only if what I tell you appears absolutely unbelievable, have we any chance of visualizing the future as it really will happen.
- Arthur C. Clarke (h/t Brin)