This book is a comprehensive guide to the natural history of Canada’s Western Arctic, an area of Canada between the Arctic Circle and the North Pole. It is an expanded version of the Natural History chapter in Canada’s Western Arctic: The Definitive Guide to Canada’s Western Arctic by the Western Arctic Handbook Committee. Topics include history, the Ice Age, climate, permafrost, geology, landforms, rivers, lakes, plants, wildlife, Aurora Borealis, the Beaufort Sea, the Mackenzie Delta, and the Western Queen Elizabeth Islands. This book has the benefit of many contributors, including local residents who shared their knowledge of the area, and academics who have devoted their careers to studying the area. There are daily jet flights between Edmonton International Airport and Inuvik, the largest community in Canada’s Western Arctic, via Yellowknife and Norman Wells, and turbo prop flights three days a week between Alaska and Inuvik, via Whitehorse and Dawson City. There are also air services between Inuvik and other communities in Canada’s Western Arctic.