For centuries, poets & philosophers extolled the benefits of a walk in the woods: Beethoven drew inspiration from rocks & trees; Wordsworth composed while walking over the heath; Nikola Tesla conceived the electric motor while visiting a park. From forest paths in Korea to islands in Finland to eucalyptus groves in California, Florence Williams investigates the science at the confluence of environment, mood, health & creativity. Delving into new research, she uncovers the powers of the natural world to improve health, promote reflection & innovation, & strengthen our relationships. As our lives shift indoors, these ideas-and the answers they yield-are more urgent than ever.