SIAM Announcement Figure 1. Ken Golden taking a sea ice core in Antarctica, with the icebreaker Aurora Australis in the background. Photo by Adam Gully during the Sea Ice Physics and Ecosystem eXperiment (SIPEX), 2007. Once again, several of the SIAM activities at the 2009 American Mathematical Society (AMS)/ Mathematical Association of America (MAA) Joint Mathematics Meetings[4] have a Climate and Sustainability theme. The SIAM Invited Address will be delivered by Ken Golden, on Mathematics of sea ice to help predict climate change. Golden, Professor of Mathematics at the University of Utah, regularly travels to the Arctic and Antarctic to collect data on the fluid and electrical transport properties of sea ice, and his talks combine math and science with polar beauty and a sense of adventure [5-6]. He will also run a minisymposium on Polar Climate Modeling in collaboration with David Holland, and Deborah Sulsky. There will be a minisymposium on Mathematical Modeling of Natural Resources, organized by Catherine A. Roberts, and two minisymposia on energy: Mathematical and Computational Challenges in Global Climate and Energy Processes, organized by Margot Gerritsen, Chair of the SIAG on Geosciences, and The Mathematics of Energy Conversion, organized by Keith Promislow. For more information, see [7]. In addition to the SIAM activities at the 2009 Joint Mathematics Meeting, Tom Pfaff will be running an MAA Minicourse on Educating about the state of the planet and sustainability while enhancing calculus [7], and there will be an MAA session and discussion on Environmental Mathematics: Getting it in the curriculum organized by Karen Bolinger and Ben Fusaro. These events are particularly well timed in view of the upcoming 2009 Math Awareness Month (see below).