Another British study discovered that average eight-year-olds were better able to identify characters from the Japanese card trading game Pokemon than native species in the community where they lived: Pikachu, Metapod, and Wigglytuff were names more familiar to them than otter, beetle, and oak tree.

Time in nature is not leisure time; it's an essential investment in our chidlren's health (and also, by the way, in our own).

Green exercise improves psychological health.

If we desire a kinder nation, seeing it through the eyes of children is an eminently sensible endeavor: A city that is pro-child,for example, is also a more humane place for adults.

In a famous Middletown study of Muncie, Indiana, in 1924, mothers were asked to rank the qualities they most desire in their children. At the top of the list were conformity and strict obedience. More than fifty years later, when the Middletown survey was replicated, mothers placed autonomy and independence first. The healthiest parenting probably promotes a balance of these qualities in children.

Today's children are living a childhood of firsts. They are the first daycare generation; the first truly multicultural generation; the first generation to grow up in the electronic bubble, the environment defined by computers and new forms of television; the first post-sexual revolution generation; the first generation for which nature is more abstraction than reality; the first generation to grow up in new kinds of dispersed, deconcentrated cities, not quite urban, rural, or suburban.

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.