I want to recommend this book: I grew up on the land. I had a childhood spent playing, exploring and just "being" in Nature. Unlike my own rural childhood, my sons have been raised in the city. That means that instead of living right in a completely natural setting, we have to leave our man made environment and travel (luckily for us it's walk or bike ride away in proximity) to the woods. It is something we have done throughout their childhood and continue to do, as we feel it is important our boys have time and place to roam and explore the natural world.
"Unlike television, nature does not steal time; it amplifies it. Nature offers healing for a child living in a destructive family or neighborhood. It serves as a blank slate upon which a child draws and reinterprets the culture's fantasies. Nature inspires creativity in a child by demanding visualization and the full use of the senses. Given a chance, a child will bring the confusion of the world to the woods, wash it in the creek, turn it over to see what lives on the unseen side of that confusion... In nature, a child finds freedom, fantasy, and privacy: a place distant from the adult world, a separate place."
I found this book to be insightful. It also carries a warning. If we keep on as we have been over the past decades, in the way we have treated and viewed the natural world, we will not only be losing our environment. We will lose our future - our children. We all need the natural world.