The Master of Environmental Studies (MES) program at the University of Pennsylvania helps you translate your passion for the environment into a fulfilling career. Our program offers you a rigorous academic grounding in environmental science and exceptional opportunities to conduct research in the field. In addition, you gain the professional networks and individualized professional development you need to excel in your work, whether as a researcher, policy advocate, teacher or business executive. The Master of Environmental Studies program (MES) is designed for individuals with a wide variety of backgrounds and levels of experience. Successful students in the program have come from many different undergraduate educational backgrounds such as economics, political science and English.