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Home > Study: Arts & Science > TRINITY ONE > Butterfield Environment & Sustainability Stream

Butterfield Environment & Sustainability Stream

The Butterfield Environment & Sustainability stream welcomed its first cohort of students for the 2018-2019 academic year. Created in close consultation with the University of Toronto’s School of the Environment, this stream will examine the most challenging issues surrounding Human beings, the planet and our future together. The Butterfield Environment & Sustainability stream will use an interdisciplinary approach that combines both the sciences and the arts. Students will learn how to think about the complexities of environmental sustainability from both theoretical and practical perspectives.

This stream is open to all incoming Faculty of Arts & Science students, however we recommend at least one senior-level high school science course as preparation.

The Butterfield Environment & Sustainability Stream was established thanks to the generous donation of George and Martha Butterfield and is funded by sustainable investments.


Students in the  Butterfield Environment & Sustainability stream must enroll in two Trinity One seminars in their first year: TRN140Y1: Ethics, Humans, and Nature and TRN141Y1: Environmental Science & Pathways to Sustainability. Each course amounts to 1.0 FCE and will continue throughout the fall and winter semesters. These credits will account for 2.0 credits of the typical 5.0 credit load in the first year. To learn more about each course, click below!


The Butterfield Environment & Sustainability stream provides an excellent foundation for many of the programs offered by the School of the Environment. In addition to the School’s core Environmental Science and Environmental Studies majors, students should consider the collaborative programs offered, including Environmental Ethics and Environment and Health. Students may also be interested in a directed minor, intended for students looking to acquire environmental knowledge in a specific discipline, or one of the environmental programs offered by other University of Toronto departments such as Environmental Biology or Environmental Chemistry.

The Butterfield Environment & Sustainability stream’s interdisciplinary emphasis also helps students prepare for a variety of Humanities and Social Science programs. Students may be interested in pursuing studies in Philosophy, Political Science, International Relations, or Public Policy 


Your stream mentors will support you throughout the academic year by hosting workshops and activities to assist you with course assessments and to facilitate community building. They will be your first point of contact should you have any academic concerns or questions about student life! Meet your stream mentors below!

Madeleine Frechette stands in front of trees Madeleine Frechette

Program(s) of Study: Environmental Studies (Major), Criminology & Sociolegal Studies (Major), Indigenous Studies (Minor), Certificate in Sustainability
Hometown: Pickering, ON
College: Trinity College

Madeleine was born and raised in Pickering, a small city in the Greater Toronto Area. In her first year at Trinity College, she participated in the Trinity One program as a student in the Butterfield Environment & Sustainability stream. Madeleine has been a mentor for the Trinity One program for the past two years, and loves connecting with new and prospective students from her former stream. Over the 2022 summer, she was the recipient of the University of Toronto SSHRC Excellence Award, which supported her research on environmental justice with the Feeding City lab. Madeleine also works as a Rewilding Communities program assistant for the David Suzuki Foundation. Outside of research, she enjoys adding to her ever-growing record collection and exploring provincial parks with friends! Madeleine would like to welcome all incoming students to the Trinity One program and looks forward to meeting them this year!

Yang Jing (Aimie) Zheng

Program(s) of Study: Neuroscience (Major), Environmental Science (Minor), Buddhism, Psychology, & Mental Health (Minor)
Hometown: Brooklyn, New York
College: Trinity College

Aimie expressed immense gratitude for her experience with the Environment & Sustainability Stream, through which she expanded her worldview and explored her interests in environmental science. TrinOne was undoubtedly a fortifying experience for Aimie. She felt that the program encouraged her to step out of her comfort zone and further cultivate her abilities to express her perspectives. Outside of school, Aimie enjoys painting, visiting nature spots, reading books, and trying new foods. One personal/fun goal she has before graduating is to visit all cafes in Toronto! If you ever want any cafe recommendations, she would be happy to share. On most weekends, you can find her tucked in bed reading a book or watching a movie. Aimie is also involved in various activist and nonprofit organizations outside of UofT. During the summer of 2022, she is volunteering for the Trinity Sustainable Food System Research Group and aims to pursue urban agriculture and food sustainability research in the following years.

As a mentor, Aimie wishes to support students in their journey throughout TrinOne and university. She found mentorships to be a tremendous blessing for her throughout her first year and hopes to give back to the community that guided her through challenges. She would be happy to help and further encourages students to reach out if they have any questions or would like to chat!



Hear from graduates of the Trinity One program – Environment & Sustainability stream!

Rajvansh Rungta | 2020

“The Trinity One program has proven to be an enriching first-year experience for me. The two courses have played a quintessential role in my self-development over the last five months as they have enabled me to voice my opinions fearlessly and have taught me how to learn from constructive criticism.”

Olivia Rodrigo | 2020

“As ENV is a new addition to Trin One and not as widely known, I want to represent my class and share the incredible work we are doing. It is a stream that encompasses all interests and interdisciplinary backgrounds which I believe students should be aware of.”

Environmentalism, politics, humanitarian crises and climate change are all wrapped up in one!

I love how the Butterfield Environment & Sustainability stream will not shy away from teaching the complex, interwoven nature of environment and social justice issues.  

- Nathan Postma, 4th Year Environmental Studies Major

Nathan Postma on Rooftop Garden IMG_5091
Contact Us:

Susan He
Program Coordinator, Margaret MacMillan Trinity One


Have a question? Ask a mentor!