Book excerpt: Economics of the Food System provides a comprehensive overview of the food system, beginning with the physical and geographical context of United States agriculture. Concepts and tools of applied economics are then used to analyze the structure and economic characteristics of each component of the food system. Over the course of the text, students learn about agricultural supply, demand, and prices, market elasticities and derived demand, food processing, wholesaling, retailing and food service, and the international food market. They also study the role of transportation, the law of one price, risk management, storage, and emerging issues and challenges for the food system. Throughout the text, the focus is on how markets function to ensure that people have the food they want to eat, when and where they want to eat it. As they read, students will have constant opportunities to consider the key forces that shape the food system's ongoing evolution. With its comprehensive coverage of all aspects of food system economics and its attention to practical economic applications, Economics of the Food System is ideal for courses in agricultural economics or agribusiness Biographies David Blandford, who holds a Ph.D. in agricultural economics from the University of Manchester, is a professor emeritus of agricultural and environmental economics at Pennsylvania State University. His teaching and research interests include agricultural and food policy, and international trade. Alan Webb holds a Ph.D. in agricultural economics from Oklahoma State University and served 14 years as trade economist with USDA before joining Winrock International as a consultant on agricultural development. He held teaching and research positions at the University Putra Malaysia and National Cheng Kung University in Taiwan. James Dunn, who holds a Ph.D. in agricultural economics from Oklahoma State University, is a professor emeritus of agricultural economics at Pennsylvania State University, where his teaching and research focused on agricultural policy and food industry economics.