Cage free. Pastured. Organic. Free range. Certified humane. Natural—What does it all mean? When it comes to eggs, it’s anyone’s guess as to where those chickens have roamed and what sorts of tasty vittles they’ve consumed (or not) before they laid the eggs you’re about to purchase. What impact, if any, does this have on the eggs, not to mention the welfare of the chickens themselves? Whether you’re buying at the grocery store or your local health-food store or farmers’ market, how do you know what’s really in that carton, even when you ask?….