Every year, the Tuesday of Earth Science Week is observed as No Child Left Inside Day (NCLI). While the NCLI home page has nice school-oriented directions for organized learning activities, I have to speak up for the virtues of just getting outside and rambling around. It does require some practice and training beforehand, even for the right child. The kid needs enough street smarts to stay away from trouble, enough initiative to get out of trouble, knowledge of local hazards (like dangerous terrain, poisonous plants, typical wildlife...), friends who won't encourage bad choices, and the intellectual gumption to study and learn without adult guidance. Those are all things we need as grownups, so why not learn them as early as possible? That's my thinking. If you have, know, or ARE a child with those attributes, consider the joys of science al fresco.