Across the world, the environment is a key determinant of health and well-being. Unimproved water and sanitation, ambient air pollution, indoor pollution from solid fuels, and lead exposure are among the leading contributors to global burden of disease. Although the twentieth century saw public health triumphs in many parts of the “developed” world, these major contributors to disease burden remain critical public health challenges in many countries. In addition, many current and emerging exposures in food, water, soil, the air, and consumer products adversely affect humans in important ways. For example, particulate matter increases cardiovascular and respiratory morbidity and mortality. Other chemicals adversely affect fertility, child development, brain function, thyroid hormones, and the immune system. Global climate change leads to an array of health challenges, ranging from infectious disease to heat stress to natural disasters. The Master of Public Health with a concentration in environmental health equips students with knowledge and skills to work on these public health challenges. The program provides a foundation in environmental health science with an emphasis on public health practice, and faculty bring the real world into the classroom at every opportunity. Multiple classes offer the opportunity for field projects and engagement with communities or policy makers. Students can enhance their learning and gain additional experience by participating in departmental research. Career pathways for graduates include work as directors of public health or environmental health for cities and towns, as program managers in state and federal health agencies, and in many roles in nonprofit agencies. Other alumni hold research positions in public and private health research organizations, work as consultants in private risk assessment companies, or are physicians in occupational and environmental clinics. Each year, SPH alumni enter a wide range of jobs aimed at preventing environmental exposures and protecting public health.