Climate change stuff

* Skeptical Science has a good post explaining Hansen's recent paper that details why they expect rapid warming in the near future.

* At Real Climate, a post on the study of tree rings, showing they don't well reflect cooling caused by volcanic activity. The end result is that this may have led to some underestimates of climate sensitivity.

* Nature reports that some measurements of the amount of leaking methane from at least one natural gas field indicate that gas may not be much better than coal for the warming atmosphere. There seems to be uncertainty as to how representative this is of other gas production areas, but it is still a bit of bad news.