Historians and Nature considers five cutting-edge questions facing environmental historians today. How can we historicise nature? Is nature a historical actor? How have human beings interacted with nature and what patterns have emerged? How do we understand the ecology of urban spaces? What is the history of environmental diplomacy? Focusing on the United States and Germany, the book takes a comparative approach in examining environmental history. The authors draw on a range of interdisciplinary perspectives, including history, cultural studies, human geography, biology and ecology. Case studies include Native Americans and their relationship to the environment, the California Gold Rush and the Coal Fields of the Ruhr Basin in the nineteenth century, the controversial building of dikes in seventeenth-century Germany, cleaning up modern cities, and the Greenpeace movement and the development of international environmental activism in the 1970s.