Last Child in the Woods: Saving Our Children From Nature-Deficit Disorder is a 2005 book by author Richard Louv that documents decreased exposure of children to nature in American society and how this "nature-deficit disorder" harms children and society. The book examines research and concludes that direct exposure to nature is essential for healthy childhood development and for the physical and emotional health of children and adults. The author also suggests solutions to the problems he describes. A revised and expanded edition was published in 2008.
The book was on the New York Times best seller list for best paper nonfiction. The author received the Audubon Medal “for sounding the alarm about the health and societal costs of children's isolation from the natural world—and for sparking a growing movement to remedy the problem”.