This is a groundbreaking analysis of agricultural development and transitions toward more sustainable management in one region. An invaluable resource for researchers, policymakers, and students alike, it examines new approaches to make agricultural landscapes healthier for both the environment and people. The Yaqui Valley is one of the most intensive agricultural regions of the world. It also faces resource limitations, threats to human health, and rapidly changing economic conditions. Pamela Matson and colleagues from leading institutions in the United States and Mexico spent fifteen years addressing this challenge.