“When the average North American sits down to eat, each ingredient has typically travelled at least 1,500 miles—call it “the SUV diet.” On the first day of spring, 2005, Alisa Smith and James MacKinnon (bios) chose to confront this unsettling statistic with a simple experiment. For one year, they would buy or gather their food and drink from within 100 miles of their apartment in Vancouver, British Columbia.”
http://100milediet.org/ [web site no longer exists]