NPR's Terry Gross had this interesting segment today. She interviewed Michael Specter, a New Yorker science writer, on the subject of the carbon footprint of food. They discussed the complexity of determining the footprint, which is based on a variety of factors such as how far the food is transported, the manner in which it's transported, what chemicals and fertilizers are used to help the food grow, whether artificial heating is needed for it to grow, etc.

Would you like to see a measure of your food's carbon footprint along with its calorie count before you make a purchases?