Webresources for food and marketing in iowa. Links to many resources can be found on this page under these topics: Food miles and food. Webby emphasizing scientific principles and analytical thinking, the program seeks to prepare students to address challenges to agricultural sustainability in iowa and other regions of the world. Webstudents learn agroecological principles, study social relations underlying sustainable farming and food systems, and gain experience with practical techniques of sustainable. Websatisfying the nutritional needs of a growing population whilst limiting environmental repercussions will require sustainable intensification of agriculture.