Director of the Sun-Climate Research Center, NASA GSFC Dr. Robert Cahalan has been doing scientific research for more than 40 years. He is Director of the Sun-Climate Research Center at NASA’s Goddard Space Flight Center, and recently retired as Chief of Goddard’s Climate and Radiation Laboratory. He is President Emeritus of the International Radiation Commission. He contributed to several Assessment Reports of the United Nations Intergovernmental Panel on Climate Change (IPCC), including the Fourth Assessment Report (AR4) that garnered the 2007 Nobel Prize. Dr. Cahalan is a Fellow of the American Meteorological Society as well as the recipient of numerous awards for scientific research, including the United States Outstanding Leadership and Service Medal.