The population-health-environment approach to development recognizes the interconnectedness between people and their environment, and this book examines the issues therein while identifying areas of further research and action. Population growth, size, fertility, mortality, migration, settlement patterns, and resource availability all influence the environment and development; solving the associated complex challenges demands a better understanding of how these aspects of population impact the environment, how environmental changes impact our health and well-being, and what can be done to address these issues. If these aspects can be successfully and effectively integrated, then a range of development goals, from poverty reduction to health security to gender equity, can be achieved. The papers in this volume provide comprehensive analysis by utilizing the most recent data and information.