The expression nature-deficit disorder was coined in 2005 by American author Richard Louv. The term originates from his bestselling book on the same topic entitled Last Child in the Woods – Saving Our Children from Nature-Deficit Disorder (Algonquin Books, 2005). Since its first publication five years ago, the book has stimulated more widespread discussion about the disconnection between children and nature, and inspired the formation of the international Children and Nature Network, a movement which campaigns to reconnect young people with the natural environment.