Just arrived last night in San Francisco...for the scientific meeting to end all scientific meetings. Over 18K attendees are expected at this year's AGU, held at the gigantic Moscone Center. The highlight? An address by Obama science adviser John Holdren on Monday. My personal focus is on the communication and outreach sections...I'll be participating in a "communicating climate science" panel with Richard Somerville and Susan Joy Hassol on Tuesday. And I'll be blogging about everything here and at DeSmogBlog. Stand by.