One of my students told me that every time she learns the name of a plant, she feels as if she is meeting someone new. Giving a name to something is a way of knowing it.

When you're sitting in front of a screen, you're not using all of your senses at the same time. Nowhere than in nature do kids use their senses in such a stimulated way.

Nature-the sublime, the harsh, and the beautiful-offers something that the street or gated community or computer game cannot. Nature presents the young with something so much greater than they are; it offers an environment where they can easily contemplate infinity and eternity.

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.

It takes time--loose, unstructured dreamtime-- to experience nature in a meaningful way. Unless parents are vigilant, such time becomes a scarce resource, not because we intend it to shrink, but because time is consumed by multiple, invisible forces; because our culture currently places so little value on natural play.

Prize the natural spaces and shorelines most of all, because once they're gone, with rare exceptions they're gone forever. In our bones we need the natural curves of hills, the scent of chapparal, the whisper of pines, the possibility of wildness. We require these patches of nature for our mental health and our spiritual resilience.

Nature has been taken over by thugs who care absolutely nothing about it. We need to take nature back.