Master of Science in Environmental Science (MSES)

Earn an MSES degree and shape the future of environmental science

With a Master of Science in Environmental Science (MSES) degree from the O’Neill School, you’ll become an environmental professional—mastering the science, along with the analytical and policy skills needed to apply scientific knowledge and lead the way toward solving environmental issues facing our global society.

Our MSES program is one of the oldest—and largest—in the nation.

Add an MPA to your MSES degree

Get more education in less time with a dual degree—combine your MSES with an MPA and earn two master's degrees in less time than it would take to earn each degree separately and become sought after by environmental agencies also seeking policy expertise.

Learn more about the MPA-MSES


Learn from the best

Our faculty members are top research scientists, serious scholars, and dedicated educators, advisors, and mentors.

They earn accolades—from National Science Foundation awards to Fulbright fellowships to the Nobel Prize. As a student at O’Neill, you’ll benefit from their expertise and work alongside them in a collaborative environment.

Learn more about faculty research

Take the first step toward changing the world through environmental science

O’Neill’s interdisciplinary nature prepares MSES students for environmental careers by combining environmental policy with a broad base of scientific knowledge and technical skills.

—Joe Morgan, MSES’14
Researchers in a marsh