"The book describes both current and emerging environmental hazards to human and related ecosystem health and discusses policies and their public health foundations. Public health concerns are presented as their nexus with ecosystem concerns. Current hazards described include air pollution, impure water, unsafe food, toxic substances, pesticides, tobacco products, and hazardous waste. Emerging areas of import to potential environmental effects and nascent policies include: climate change, genetically-modified organisms, the built environment, environment-related diseases, endangered species,and energy and transportation. The book is written from a global perspective of environment hazards. "--Provided by publisher.