Monday 16 March 2026
Environmental Systems Science prepares you to understand and solve the critical challenges facing our planet: climate change, water scarcity, soil degradation, and the loss of biological diversity. These aren't abstract problems—they're unfolding right here in California, right now.
Our program connects biology, chemistry, physics, and earth science so you see the big picture. You'll learn in the field, in the lab, and in the classroom. You'll work on real research with faculty who are leaders in their fields. And you'll graduate with skills that matter; not just knowledge that can be memorized, but the ability to ask new questions, design experiments, and adapt when things don't go as planned.
Earth and Climate Science Focus on the physical processes that shape our planet—atmospheric science, hydrology, geology, and climate systems.
Ecosystem Science Focus on living systems—ecology, microbiology, soil science, and the interactions between organisms and their environments.
Education Focus on teaching, curriculum design, environmental literacy, and experiential learning to translate environmental science into meaningful learning experiences.
All paths share a common foundation and lead to the same degree. Choose based on your interests.
ESS graduates are prepared for:
ESS Academic Advisors - Have questions? Reach out to one of the ESS Academic Advisors below.
Chelsea Flannery (cflannery@ucmerced.edu) - students with last names A-G
Cynthia Granados (cgranados10@ucmerced.edu) - students with last names H-O
Maricela Melendrez (mmelendrez2@ucmerced.edu) - students with last names P-Z
ESS Program Chair
Rebecca Ryals, Associate Professor (rryals@ucmerced.edu)
Mailing Address
Environmental Systems Science Program School of Natural Sciences University of California, Merced 5200 North Lake Road Merced, CA 95343