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Case Study: Food, Fuel, and Freeways: An Iowa perspective on how far food travels, fuel usage, and greenhouse gas emissionsThis study contains an analysis of the number of miles traveled by food under different marketing/distribution systems, and an estimate of the greenhouse gases that are produced. The study's authors estimated that growing and transporting 10 percent more of the produce for Iowa consumption in a locally based food system would result in an annual reduction of carbon dioxide emissions ranging from 6.7 to 7.9 million pounds, depending on the system and truck type.
The full report can be found and downloaded at http://www.leopold.iastate.edu/pubs/staff/ppp/index.htm
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