This was a very interesting article that asks we look at not just how many miles an item has traveled to get to us, but the full carbon footprint of that item:
It cites some interesting studies that have found food miles are not the whole story. So, just like I say in my speeches about organics, local food is not the end-all answer, and neither is organic. They are both important components of Sustainability, but unfortunately very few things are all that simple about Sustainability. An important part is to do business with companies that share your vision and values. They will do research about how they can affect Sustainability and conservation. If you do business with companies that share your values in all parts of your life then each one will do their part and you come out looking like a sustainability guru!