Bachelor of Science in Environmental Science


The environmental science major at Saint Joseph’s prepares students to be stewards of the planet through investigation of the environment and the ecological challenges it faces.

The environmental science degrees integrate a range of scientific disciplines, including biology, chemistry, and geology, around the study of the environment. An important focus of Saint Joseph’s environmental program is on aquatic ecosystems such as Sebago Lake and the nearby Gulf of Maine.

At a Glance

  • Ideal location for field exercises and research opportunities. Situated on the shores of Sebago Lake, Saint Joseph’s surrounding region features lakes, mountains, forests, and the Atlantic Ocean.
  • Low student-faculty ratios ensure close interaction with professors.
  • Student involvement in research that prepares students for careers and graduate school.
  • Courses provide broad training needed for a career in science.
  • Numerous specialty courses to pursue individual interests.
  • Opportunity to enroll in the Environmental Science Semester, a semester-long, field-based education experience.
  • Participate in a three-week expeditionary field geology course in Iceland.


The Bachelor of Science in Environmental Science incorporates the principles of biology, chemistry, calculus, ecology, and more. Much of the curriculum is field-based, with opportunities to earn credits through completely off-campus, immersive study. Also available is a Bachelor of Arts in Environmental Studies, which has a similarly science-heavy curriculum, though requires two semesters of foreign language study.

Environmental Science Minor

minor in environmental science is available and requires students to take 20 credits.

Sustainability Studies Minor

minor in Sustainability Studies is available and requires students to take 20 credits of course work.

View Course Catalog
Meet Our Faculty


Mark Green
Mark GreenProfessor, Sciences Dept.
PhD, SUNY at Stony Brook
MS, SUNY at Stony Brook
BS, Allegheny College
Greg Teegarden
Greg TeegardenProfessor
PhD, University of Rhode Island
MS, University of Maine
BA, University of Colorado
Johan Erikson
Johan EriksonAssociate Professor, Chair
PhD, Dartmouth College
MS, Stanford University
AB, Dartmouth College


Haley Batchelder

Haley Batchelder ’19 has been conducting field research on sediment chemistry aboard the Portland Water District’s pontoon boat on Sebago Lake. Watch the video as she talks about the project.

Alana Dougherty

Alana Dougherty ’17, participated in the Environmental Science Semester where she made close connections with her professors. This 24/7 semester immersed her in field work and adaptive techniques.

Nhu Vo

Nhu Vo ’17, a double major in Environmental and Marine Science, starts sustainability values TerraCylcle project on campus. TerraCycle reduce the amount of waste that goes to landfills by collecting things that are not usually recyclable and finds a use for them.


Join Tyler Allen ’18 on his Lake Water Quality Research

“I want to be that guy that goes out and takes water samples. I don’t want to be sitting at a desk all day. I just can’t do that. If I could go out on a boat and take water samples and monitor the lakes, then that would be a dream come true.”


Students who major in environmental science will be qualified for professional careers in government (e.g. EPA, DEP), environmental consulting, and conservation.



Learn more about how you might qualify for a scholarship in science.


Environmental Science Semester (ESS) – students spend the semester immersed in science, traveling from Nova Scotia to the White Mountains to the coast of Maine.

  • Life on the Islands of Maine
    October 15, 2018
    Following our second stay in Wells, we returned to Portland before catching the ferry for a week on Peaks Island in Casco Bay. Once on Peaks, we observed the changes in wave energy affecting the islan[…]

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  • Zonation in the Salt Marsh
    October 4, 2018
    Before heading back to the Wells National Estuarine Research Reserve, the gang stopped at Thompson’s Orchard for some fall festivities – apple picking and donut eating. In Wells, the salt marsh was an[…]

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  • Creatures and Waves at the Rocky Intertidal Zone
    September 26, 2018
    After our first adventure on a research boat studying the Damariscotta River estuary, where we observed how the salinity and mixing state of the estuary affects the diversity of zooplankton and phytop[…]

    Read More »