So many food labels proclaim their eco-virtues these days — organic. Pasture-raised. Cage-free. Non-GMO. What do they actually mean? Here are six ways to make sense of it all.- "Natural" or "sustainable" labels have no legal standard.- "Organic" means it's better for the planet, but may not be better for you.- Non-GMO is not organic. The food was still grown with pesticides.- Labels like "Animal Welfare Approved" mean the animals got to live outdoors.- "Fair Trade" products deliver a little extra money to small farmers in cooperatives.- Don't let labels stress you out. When it comes to solving the world's problems, your shopping decisions aren't nearly as important as your political decisions.