Dr. Lawrence Mysak is a fellow of the Royal Society of Canada and Canadian Steamship Lines Professor of Meteorology at McGill University, Canada. He earned a Ph.D. in applied mathematics from Harvard University in 1967. Dr. Mysak is also a Fellow of the Canadian Meteorological and Oceanographic Society, the American Meteorological Society, and the American Geophysical Union. His research focuses on Arctic sea ice and climate during the Little Ice Age; sea ice rheology (viscous-plastic vs. purely plastic models); modeling the freshwater budget of the Arctic Ocean and exchanges with the North Atlantic Ocean (present and past); response of the ocean carbon cycle to Milankovitch forcing in a low-order atmosphere-ocean-sea ice model; and reconstruction of climate change in Europe during the past millennium from an analysis of church architecture, comparing the Medieval Warm Period with the Little Ice Age.