Food Systems Miles and Emissions Case Study

Food miles are the popular measure and a poor one. Production method usually matters more than distance, and a locally grown thing produced badly can beat an imported one.

The sheet says this plainly, which makes it more useful than most classroom treatments of the topic.

The page has the comparison framework, emissions factors, a worked example and a case study to complete. It also has a section on what is not counted, which includes labour conditions and water use, and the argument that a single number can never carry everything that matters about a food choice.