It’s been a very long day getting to San Francisco for the Fall meeting of the American Geophysical Union and getting my talk ready. I’m giving a poster presentation (Larry Esposito is lead author, but out of town) tomorrow on the origin of Saturn’s rings, and an oral presentation Wednesday afternoon on self-gravity wakes in Saturn’s B ring (see my earlier posts on this topic if you’re interested in what a self-gravity wake is). So I’m wiped out for today, but I’m looking forward to Al Gore’s presentation on science and policy on Thursday right before I head back to Colorado.