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Environmental Science

The Environmental Science concentration at Occidental explores the intersection of human systems and the natural world. In and around Los Angeles, you’ll study earth processes and ecosystems while building the scientific skills needed to address today’s environmental challenges.

Earn Your Environmental Science Concentration at Occidental

The Occidental College Environmental Science program is housed within the biology and geology departments and offers an interdisciplinary approach to understanding environmental systems. You’ll study how physical, biological, and human processes interact, drawing from coursework in biology, geology, economics, and related fields. This structure allows you to build a strong scientific foundation while tailoring your studies through either a biology or geology major.

Research and fieldwork are central to the Occidental Environmental Science undergraduate program. Located near the Pacific Ocean, the San Gabriel Mountains, and the Mojave Desert, studying on the Occidental campus offers direct access to diverse ecosystems and geological formations. You’ll conduct hands-on research with faculty mentors, collecting and analyzing your own data rather than relying solely on existing datasets. Graduates pursue careers or graduate study in environmental science, ecology, geology, conservation, policy, and consulting.

What You’ll Learn as an Environmental Science Concentration at Occidental

Occidental College students taking measurements by a stream

Science Across Systems

You’ll examine earth processes, ecosystems, and environmental change through biological and geological perspectives. Coursework emphasizes data collection, field methods, and interdisciplinary analysis, preparing you to address real-world environmental issues. Subject areas include climate change, computational biology, urban ecology, biogeochemical cycling, life history on Earth, and conservation.

Build a strong scientific core through biology and geology. You’ll learn to analyze environmental systems from molecular and ecosystem scales while understanding the human dimensions of environmental change.

Conduct hands-on research in coastal, desert, and mountain environments near the Occidental campus in LA. You’ll design field research projects, collect original data, and work closely with faculty on field- and lab-based research.

San Gabriel Peak Mountain View with Yucca Plants and Deep Canyon

Learning Environmental Science in LA

Getting an Environmental Science Concentration at Occidental places you in one of the most diverse natural laboratories in the country. Los Angeles offers access to coastal systems, mountain watersheds, and desert landscapes, along with research partnerships in conservation, climate science, and environmental policy.

What Our Graduates Are Doing

Entomology Intern, Natural History Museum of LA County

Hannah Hayes
2018

Ph.D. program, ecology & evolutionary biology, UCLA

Marvin Browne
2017

Field Team Leader, Elements Wilderness Program

Riley Wall
2017

Pathology Research Associate, HistoTox Labs

Fiona Gowen-Huang
2010

Compliance and GIS Geologist, Red 5 Limited

Stephanie Kay
2010

FAQs

It’s an interdisciplinary concentration within the biology or geology majors focused on environmental systems, research, and fieldwork.

Yes. Students complete faculty-mentored research and often present original field-based projects.

Yes. Coursework emphasizes hands-on research in Southern California ecosystems.

Students graduate with a B.A. in biology or geology with an environmental science concentration.

Graduates work in environmental science, conservation, consulting, policy, education, and graduate research programs.

Environmental Science Core Courses

First-level courses

Earth: Our Environment (Geo 105)
Introductory Biology (Bio 105 or 110)

Second-level courses

Biostatistics (Bio 268)
Earth: A Field Perspective (Geo 225)
Earth's Climate: Past and Future (Geo 245)
Biodiversity and Organization of Marine and Terrestrial Ecosystems (Bio 260) or Ecology (Bio 270)
Upper Division courses like Global Change Biology and Microbial Symbiosis
 

Additional courses within major concentration

Biology

Introduction to Cellular & Molecular Biology (Bio 130)

Vertebrate Physiology (Bio 240), Plant Form & Function (Bio 250), or Flora Of Southern California (Bio 275)

Evolutionary Biology (Bio 280)

Three 300-level courses (e.g., Avian Biology, Biological Oceanography)

Chemistry 120 and Chemistry 220

Mathematics through Calculus I

Geology

Introduction to Field Methods (Geo 225)

Global Tectonics and Geophysics (Geo 235)

Earth Materials (Geo 305)

Structural Geology/Adv Mapping (Geo 325)

Geomorphology (Geo 342) or Sedimentary Geology

Senior Seminar (Geo 490)

Mathematics through Math 120 (or equivalent) or Math 110 and approved statistics course

Recommended:
Chemistry 120, Physics 110 or 115, 120 or 125 for students planning to attend graduate school or pursue a professional career in Geology or Environmental Science

 

Contact Environmental Science
Bioscience Building