Environmental health is associated with recognizing, assessing, understanding and controlling the impacts of people in their environment and the impacts of the environment on the public health. The complexity of the problems requires multidisciplinary approaches. This course will provide an introduction to the principles, methods, and issues related to global environmental health. This course examines health issues, scientific understanding of causes, and possible future approaches to control of the major environmental health problems internationally. Topics include how the body reacts to environmental pollutants; physical, chemical, and biological agents of environmental contamination; vectors for dissemination (air, water, soil); solid and hazardous waste; susceptible populations; bio-markers and risk analysis; the scientific basis for policy decisions; risk communication; and, emerging global environmental health problems.