When I was five our family moved to a neighborhood in Rockville that would become a Paradise for me. Our new home was on Leverton Road, the southernmost street in Hungerford, a suburban tract development of modest single-family houses. 800 Leverton Rd. Two attributes made my childhood home special: One was that the sprawling neighborhood of a few hundred homes was built all at once and filled with families, like ours, with kids, so I instantly had playmates by the dozen. The second advantage was that within walking distance were my elementary school and a rec center with a ball field; a community pool and a fantastic park that were built a few years later; and, best of all, dense woods on three sides of us and winding, long trails throughout them. We spent as much time outdoors as possible . Nobody I knew stayed inside much unless they were sick or being punished. We found plenty of things to do. We were among the first people to move in, so ther...