While relaxing on a friend’s back porch over a spicy vegetarian stew and homemade bread, the conversation turned, naturally, to food. Everyone around the table expressed concern over how much junk food kids eat and how little time children spend outdoors. Our host said that she watches every afternoon as a group of elementary schoolchildren head to the corner market to purchase their after-school snack. Each child comes out with a supersized soda and a bag of potato chips. Not a small bag — the family size, for each child, every day.