Joint program with the Faculty of Science
Environmental Science explores the impact of human activities on our planet through the study of biology, chemistry, physics and physical geography. You will gain a scientific foundation in the biological and physical sciences needed to address urgent environmental and urban challenges and generate and communicate solutions.
The Environmental Science program offers two streams of study, and you select your stream in Year 2 of the program:
- In the Environmental Dynamics stream, you will specialize in physical geography, studying the interactions between land, air, water, and biological organisms to understand how the natural environment responds to stressors.
- In the Biodiversity and Conservation stream, you will specialize in environmental biology to understand how organisms and ecological communities are impacted by environmental stressors and learn to apply this knowledge to protect species and biodiversity.
In your studies, you will get practical experience in data collection, research, and scientific analysis in the field and in the laboratory. You will learn to work collaboratively and develop effective communication, analytic and critical thinking skills while better understanding climate, ecological and biophysical systems. Our graduates are prepared to make transformative environmental change in careers within the private and public sector.
Students will explore these critical issues:
- Climate change impacts and adaptation
- Biodiversity and conservation of species and habitats
- Water security and water quality
- Pollution
- Erosion
Our environmental science students gain a scientific foundation in the biological and physical sciences needed to address urgent environmental and urban challenges – and generate and communicate solutions.

At a Glance
4 years of study
Bachelor of Science (BSc)
Offered full time and some part time
Accepts applications for Fall (September), Winter (January), & Summer (May) Entry
Application Process
Hands-on Learning and Field Studies
Learning in the field is a key component in our program. Your courses will take you on location with field trips to various places in Toronto, across the Ontario and in the work place.

York University Co-op Program provides students in environmental science with an opportunity to integrate their classroom learning with hands-on, paid, work experiences.
Students measure and analyze environmental samples in multiple field course options with the same equipment and techniques used in professional settings.
In field study courses, such as Hydrosphere in second year, students measure water and energy flows on York’s campus. Whereas in another course, Water Quality and Stream Ecosystems, students conduct sampling of Black Creek following the standardized protocols outlined in the Ontario Stream Assessment Protocol and the Ontario Benthos Biomonitoring Network.sional settings.


The Aquatic Biogeochemistry Lab provides hands-on training on lab analytical equipment under the supervision of a senior technician. Students routinely use the facility to conduct independent projects and for course work.
In our Flume lab students use a research-grade hydraulic flume to model river dynamics for course work and career-readiness training.
Career Possibilities
The environmental sector is one of the fastest growing in the world. With The environmental sector is one of the fastest growing in the world. With issues of climate crisis, loss of biodiversity, and equity at the forefront of the public conscious, more organizations and businesses are looking to hire environmental professionals. By developing technical, hands-on scientific experience in research and analysis along with transferrable skills in communication, critical thinking, and leadership, our graduates are working in both the public and private sector in a variety of fields such as science, technology, education, government, business.
To help you succeed, our Experiential Education Coordinator provides a variety of career support services to our students including resume help, interview prep, and career planning workshops, and maintains an exclusive job board just for our students.
Sample Careers
- Aquatic Scientist
- Conservationist
- Environmental Control Specialist
- Laboratory Technician
- Climate Change Scientist
- Hydrologist
- Wildlife Biologist
- Environmental Consultant
Overseas Placements
Going global is optional in this program. You can choose to Study Abroad on an international Exchange program or take courses on our Semester Abroad at the Las Nubes EcoCampus in Costa Rica.
We also offer you the opportunity to complete a Global internship with York International.

The Official Environmental Science Playlist
Have you ever wondered... which songs represent #YorkUEUC programs the best? Listen to The Official Environmental Science Playlist 🎶
EUC Course Search Tool
The course listing provided here does not necessarily reflect courses that are being offered in any given year. Please check the York Courses Website for updated information on current offerings.
An analysis of the geography of plants and animals emphasizing processes that operate at the population level, the origin and diversity of plants and animals, geographic patterns of diversity, and dynamics of species populations from local to continental scales. Prerequisite: AP/GEOG 2500 3.00 or SC/GEOG 2500 3.00 or SC/BIOL 2050 4.00 or SC/BIOL 2050 3.00
[/show_field_with_limit]This course begins with lectures on field research methodology. The second phase concentrates on defining a field problem, leading to data collection in the field. The final part of the course deals with data analysis, and reviews methodological implications. Includes lectures, seminars and workshops, and a three to four day field trip.Prerequisites: Students must be registered as Honours majors in Geography or Environmental Science and must have successfully completed AP/GEOG 2420 3.00 and one of AP/GEOG 2400 6.00, AP/GEOG 2500 3.00 or AP/GEOG 2600 3.00; or permission of the Instructor. Course credit exclusions: SC/MATH 3330 3.00, AP/GEOG 4540 3.00 (prior to Fall 2012), SC/GEOG 4540 3.00 (prior to Fall 2012).
[/show_field_with_limit]Geographical perspectives on the physical processes behind extreme natural events (volcanoes, tsunami, tornadoes, hurricanes) and their impact on people. Many case studies and the literature will be used to understand how physical geography impacts human activities and settlements. Prerequisite: AP/GEOG 2600 3.00 or SC/GEOG 2600 3.00.
[/show_field_with_limit]This course explores the natural and physical systems of the city, focusing on the climate, water, geomorphology, biogeography of the urban landscape, including its built environment. Course credit exclusions: None. PRIOR TO FALL 2000: Course credit exclusion: AS/GEOG 3900 3.00.
[/show_field_with_limit]Explores the role of biological science in efforts to conserve natural resources, systems and the organisms therein. Prerequisites: SC/BIOL 2050 4.00, SC/BIOL 2060 3.00.
[/show_field_with_limit]We do not know the number of species on Earth, even to the nearest order of magnitude. This course discusses the factors that influence the number of species in an area and the importance of biodiversity to humanity. Note: Completion of 60 credits required, towards a degree in biology or environmental science or environmental studies, or permission of the Instructor.
[/show_field_with_limit]The course focuses on selected aspects of river water quality, including hillslope hydrology and the transport of pollutants, the impacts of human activities on water chemistry, nutrient transformations within stream ecosystems, and the effects of water quality on stream biological communities.Prerequisite: AP/GEOG 1400 6.00 or SC/GEOG 1400 6.00, ES/ENVS 2410 3.00, or SC/BIOL 2050 4.00.
[/show_field_with_limit]A study of the processes of energy and moisture exchanges in polar regions with emphasis on the Canadian north. Topics include atmospheric and oceanic transport of energy, surface microclimate and the sensitivity of high latitude environments to climate change. Normally offered in alternate years.Prerequisites: 54 credits successfully completed, including AP/GEOG 2400 6.00 or SC/GEOG 2400 6.00 or written permission of the Instructor.
[/show_field_with_limit]A study of the relationship between the atmosphere and the hydrosphere with the emphasis on the process of evaporation. The course includes an in-depth review of evaporation models and the instrumentation necessary for data acquisition. Normally offered in alternate years.
Prerequisite: AP/GEOG 2400 6.00 or SC/GEOG 2400 6.00.
[/show_field_with_limit]The field of Ecological Climatology provides an interdisciplinary framework for understanding how terrestrial ecosystems function in relation to climate systems. It examines the physical, chemical and biological processes by which landscapes affect and are affected by climate. The central theme is that ecosystems, through their cycling of energy, water, chemical elements and trace gases are important determinants of climate. The coupling between climate and vegetation is seen at spatial scales from the leaf to biomes and at timescales from seconds to millenia. Both natural vegetation dynamics and human induced land-use changes are mechanisms of climate change. The course combines a theoretical understanding of ecological climatology with applied experimentation to reinforce the principals involved. Prerequisite: AP/SC GEOG 2400 6.00; and either AP/GEOG 2500 3.00 or SC/GEOG 2500 3.00 or SC/BIOL 2050 4.00; and either AP/GEOG 2420 3.00 or SC GEOG 2420 3.00 or SC/BIOL 2060 3.00. Graduate student prerequisites: With permission of the Instructor.
[/show_field_with_limit]Learn more about the degree requirements in Environmental Science
Key Contact Information
| Name | Title | Extension | Office No. | ||
|---|---|---|---|---|---|
| Joshua Thienpont | Assistant Professor | 22002 | HNES 241 | eucenvsci@yorku.ca | |
| Brittany Giglio | Recruitment & Admission Officer | 22671 | HNES 125 | eucapply@yorku.ca | |
| Sharrieffa Sattaur |
|
30397 | HNES 130 | EUAdvise@yorku.ca | |


