The Great Lakes have been central to the development of eastern North America. In this beautifully designed, comprehensive gem of a guide to the ecosystem at the heart of Canada (The Tyee), award-winning science and nature writer Wayne Grady makes scientific concepts accessible as he reveals how human impact has changed this life-giving region.The Great Lakes: A Natural History of a Changing Region is the most authoritative, complete and accessible book to date about the biology and ecology of this vital, ever-changing terrain. Written by one of Canada's best-known science and nature writers, it is intended not only for those who live in the Great Lakes region, but for anyone captivated by the splendor of the natural world and sensitive to the challenges of its preservation. It is both a first-hand tribute and an essential guide to a fascinating ecosystem in eternal flux.