Food choices have huge social and environmental impacts, and yet they are very difficult to modify due to the strong inertia of habit, culture, and taste, not to mention the tremendous power of food marketing and lobbying. But these choices are malleable, and change in the direction of healthier foods that require fewer resources to produce can lead to profound improvements in overall human well-being. This course will engage students in the theories of behavior design applied to food choices. Students will run experiments to test different approaches, with an emphasis on multiple events during Earth Week in late April. The course is open to all MIIS students with no prerequisites.