Dr. Ming-ko (Hok) Woo studied Geography and Geology at the University of Hong Kong, and obtained his doctoral degree from the University of British Columbia. He is a Professional Hydrologist of the American Institute of Hydrology, a Fellow of the Arctic Institute of North America; and a Fellow of the Royal Canadian Geographical Society. Dr. Woo has conducted field investigations in the far North for four decades, working in a range of environments, from the polar desert of the High Arctic, subapline woodlands in the subarctic, to the extensive wetlands of Hudson Bay Lowlands. He has also studied drought problems in the semi-arid Sahel of northern Nigeria and the Canadian Prairies, soil erosion in subtropical south China, climate variability and hydrology of large-basins in northwestern Canada. He was recognized with the Award for Scholarly Distinction from the Canadian Association of Geographers and with the prestigious Tuzo Wilson Medal from the Canadian Geophysical Union; the latter organization also has established in his honour the Woo Lectures in Hydrology, delivered annually by invited speakers. He was conferred an honorary degree of Doctor of Environmental Studies from the University of Waterloo for his outstanding and pioneering work in the fields of cold-regions hydrology, wetland ecosystems, and hydrological modelling. He takes pride in his former students and research associates who have successfully trained and mentored generations of practitioners and instructors in the fields of Hydrology and Environmental Science.