Fall is my favorite time of year. It brings back some of my best childhood memories: playing in a big pile of crunchy red and yellow leaves, feeling the crisp air on my skin on nature walks as butterflies led the way, the first smell of my carved pumpkin. I am greatly indebted to my parents, who made sure these outdoor adventures were an integral part of my childhood. My eyes were never as wide and my imagination never as vivid as when I was out in nature. So when I hear that today’s children have had less contact with nature than any generation in human history -- spending half as much time...