Healthier Planet! Over 50% of the global population currently resides in urban areas, and that proportion continues to grow rapidly. In the World, 3 out of five people currently live in cities. The urbanization of human society has important implications for health and well-being. On one hand, dense urban populations may have more access to health care and amenities that promote healthy lifestyles. On the other hand, urban environments cultivate a variety of environmental (e.g., pollution, sanitation concerns) and social (e.g., segregation, socioeconomic disparities) stressors that make them more susceptible to health problems. Understanding, quantifying, and managing the variables that influence all aspects of human welfare has become a major challenge in the movement to build sustainable, healthy cities. To achieve this goal, city planners and managers must determine how to efficiently and effectively monitor and manage health outcomes. Historically, standards have been based ...