I was standing on a step ladder setting up a weather station in my backyard when Lydia somehow snuck up behind me and asked a question that didn’t register immediately. I turned to look down at her and saw that she was knelt down near the fence, breaking off long pieces of unmowed grass and poking them into her mouth. “Um, what are you doing?” I asked. She squinted one eye and smiled up at me, twirling a stalk of grass between her lips. She held it up to show me and repeated her question, “Do you know why they put this in their mouths? You know like farmers and stuff. Why they do that?” “Oh.” I put my screwdriver down and rubbed at…