As the nature deficit grows, another emerging body of scientific evidence indicates that direct exposure to nature is essential for physical and emotional health. For example, new studies suggest that exposure to nature may reduce the symptoms of Attention Deficit Hyperactivity Disorder (ADHD), and that it can improve all children's cognitive abilities and resistance to negative stresses and depression.
Richard LouvEach of us-adult or child-must earn nature's gift by knowing nature directly, however difficult it may be to glean that knowledge in an urban environment.
Richard Louv