What is environmental history? It is a kind of history that seeks understanding of human beings as they have lived, worked, and thought in relationship to the rest of nature through the changes brought by time. In this new edition of his seminal student textbook, J. Donald Hughes provides a masterful overview of the thinkers, topics, and perspectives that have come to constitute the exciting discipline that is environmental history. He does so on a global scale, drawing together disparate trends from a rich variety of countries into a unified whole, illuminating trends and key themes in the process. Those already familiar with the discipline will find themselves invited to think about the subject in a new way. This new edition has been updated to reflect recent developments, trends, and new work in environmental history, as well as a brand new note on its possible future. Students and scholars new to environmental history will find the book both an indispensable guide and a rich source of inspiration for future work.