John Pastor explores the natural history of the North Woods, an immense and complex forest that stretches from the western shore of Lake Superior to the far coast of Newfoundland. From the geological history of the region to the shapes of leaves and the relationship between aspens, caterpillars, and predators, Pastor delves into a fascinating range of topics as diverse as the North Woods themselves. Through his meticulous observations of the natural world, scientists and nonscientists alike learn to ask natural history questions and form their own theories, gaining a greater understanding of and love for the North Woods—and other natural places precious to them.