For the first time in history, most of our children are growing without a real connection to nature. Nature-Deficit Disorder was recognized in 2005 in the book, "Last Child in The Woods: Saving our Children from Nature-Deficit Disorder." Nature-Deficit Disorder isn’t a medical diagnosis, but it is a term recognizing an urgent problem. Richard Louv coined the term, and it was recognized by many as a call to action — to save children from losing a connection to nature.