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Environmental Science

Bachelor of Science

Top 3%

Online Bachelor's Program in the Nation

- U.S. News & World Report, 2024

Top 25

Public Flagship University

- U.S. News & World Report, 2024

Quick Facts

Credits Required: 120
Cost Per Credit: $525

College of Agriculture, Life & Environmental Sciences

We will prepare you to find innovative and sustainable solutions to today’s critical environmental challenges, including pollution and climate change. Our enthusiastic and knowledgeable faculty will engage you in the process of creating new scientific knowledge that, in turn, will enable you to impact a rapidly changing world.

An online bachelor’s degree in environmental science from the University of Arizona empowers you with a diverse and practical skillset in science, communication, critical thinking and leadership, enabling you to tackle any issue affecting our land, air and water systems.

Our graduates work on the sustainable management of land and water resources; the environmental impact of resource extraction, agriculture and urbanization; and the remediation and restoration of disturbed environments.

*Residents of some U.S. Territories may not be eligible. Please see our Eligibility & State Authorization page for more information.

The curriculum for this degree program include:

ENVS 200 & 201: Introduction to Soil Science & Soil Laboratory 
ENVS 210: Fundamentals of Environmental Science and Sustainability
ENVS 270: Critical Zone Science
ENVS 275: Data Analysis in the Life and Environmental Sciences
ENVS 305: Pollution Science
ENVS 420: Environmental Physics
ENVS 425: Environmental Microbiology
ENVS 462: Environmental Soil and Water Chemistry
ENVS 480: Environmental Assessment for Contaminated Sites
ENVS 195A: Careers in Environmental Science


Earning your Bachelor of Science in Environmental Science will build core skills, including:

  • Biology
  • Chemistry
  • Data analysis
  • Field research
  • Laboratory research
  • Microbiology
  • Molecular biology
  • Natural resource management
  • Research and analytical methods
  • Soil science
  • Technical writing
  • Water quality

Depending on your emphasis, the Environmental Science BS program will prepare you to pursue careers in the following fields:


  • Sustainable Policy
  • Sustainable Research
  • Green Building
  • Environmental Management Systems
  • Environmental Project Management
  • Greenhouse Gas Reduction
  • Environmental Technology
  • Science Education

Areas of Emphasis

scientist looking through microscope


Want to expand your knowledge about our ecosystems? This path in our environmental science program emphasizes strategies to help you solve difficult issues faced by civilization in its stewardship of Earth’s physical resources. Course topics include: environmental chemistry, environmental physics, environmental microbiology, biostatistics, geographic information sciences and professional development for environmental careers.

Graduates work as scientists, technicians, consultants and project managers. Some of these jobs may require an advanced degree or certification, but with a bachelor’s degree in Environmental Science focusing on soil, air and water, you’ll be well on your way to a successful career.

View detailed program information

students in the forest looking at water sample


Learn how to advocate for our environment! This path in our environmental science program teaches you environmental laws, regulations and policies so you can devise policies in response to pollution, waste management, biodiversity, natural resource management and climate change.

Course topics include: fundamentals of environmental science and sustainability, environmental justice, communicating science and environmental ethics.

Graduates work in government, private and public sectors focusing in sustainability, advocacy and policy.

View detailed program information