AGAGE co-leader (and ALE and GAGE leader) Ronald Prinn, a professor of Earth, Atmospheric and Planetary Sciences at MIT; keynote speaker Jack Kaye, Associate Director for Research at NASA’s Earth Science Division; and invited speakers Noelle Selin (MIT), Arlene Fiore (MIT) and Steve Wofsy (Harvard). Susan Solomon (MIT) was also an invited speaker. (Photo by Kathy Thompson)