The acclaimed author of Founding Gardeners reveals the forgotten life of Alexander von Humboldt, the visionary German naturalist whose ideas changed the way we see the natural world—and in the process created modern environmentalism.NATIONAL BEST SELLEROne of the New York Times 10 Best Books of the YearWinner of the Los Angeles Times Book Prize, The James Wright Award for Nature Writing, the Costa Biography Award, the Royal Geographic Society's Ness Award, the Sigurd F. Olson