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EASYS-BS - Earth Systems (BS)

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Earth SystemsUndergraduate MatriculatedBS - Bachelor of Science

Program Overview

The Earth Systems Program is an interdisciplinary environmental science major. Students learn about and independently investigate complex environmental problems caused by human activities in conjunction with natural changes in the Earth system. Earth Systems majors become skilled in those areas of science, economics, and policy needed to tackle the world’s most pressing social-environmental problems, becoming part of a generation of scientists, professionals, and citizens who approach and solve problems systematically and interdisciplinary.

For students to effectively contribute to solutions for such problems, their training and understanding must be broad and deep. To this end, Earth Systems students take fundamental courses in ecology, calculus, chemistry, geology, physics, economics, policy, and statistics. After completing breadth training, they concentrate on advanced work in one of six focus areas: biology, energy, environmental economics and policy, land systems, sustainable food and agriculture, or oceanography and climate. Subplans are designed to support focus and rigor but include flexibility for specialization. Examples of specialized foci have included but are not limited to environment and human health, sustainable agriculture, energy economics, sustainable development, business and the environment, and marine policy. Along with formal course requirements, Earth Systems students complete a 1-unit (270-hour) internship. The internship provides a hands-on academic experience working on a supervised field, laboratory, government, or private sector project. For courses taken for a letter grade, students must earn a D- or better to have it satisfy a requirement.

Beginning Autumn 2024-2025
-All students must complete EARTHSYS 260- Internship and EARTHSYS 260A-Internship Preparation Workshops.
-An exception for EARTHSYS 260A may be made for students who have already completed their internship prior to Autumn 2024-2025

Minimum Units in the Program

62

Minimum University Units

180
Completion requirement
Complete ALL of the following Courses:

All courses must be taken for a letter grade.

Students may not double count EARTHSYS 115.

EARTHSYS 111 no longer offered.

Creating effective solutions to socio-environmental challenges requires competency in interrogating problems and their potential solutions in light of ethical, justice, and human rights considerations. To support the development of this competency, students are required to take a minimum of one course that provides an opportunity to do at least one of the following:

  • Apply a holistic understanding of frameworks, histories, and theories from environmental justice, environmental human rights, or environmental ethics to the problematization of socio-environmental challenges across multiple disciplines. 

  • Develop the capacity to support and integrate frameworks from environmental justice, environmental human rights, or environmental ethics within institutions, organizations, and places of employment as part of one’s career.

  • Translate and communicate environmental justice or environmental human rights knowledge from communities, stakeholders, academia, and others to diverse audiences, including decision-makers. 
    Creating effective solutions to socio-environmental challenges requires competency in interrogating problems and their potential solutions in light of ethical, justice, and human rights considerations.

Complete ANY of the following Courses:

Must be taken for a letter grade.

New Internship Workshop Requirement

Beginning Autumn 2024-2025:

  • All students must complete EARTHSYS 260 and EARTHSYS 260A.

  • An exception for EARTHSYS 260A may be made for students who have already completed their internship prior to the 2024-2025 Academic Year.

Complete ALL of the following Courses:

EARTHSYS 260 and 260A do not need to be taken for a letter grade.

Completion requirement
Complete ANY of the following Courses:

Oceans 182H fulfills WIM requirements for those students pursuing the Oceans, Climate, and Atmosphere subplan.

Another designated WIM course in a related department can also fulfill this requirement but must be approved by an advisor. Your WIM course may not also count toward your subplan or electives if counted as a WIM.                                

Completion requirement

All students must take either EARTHSYS 210A OR EARTHSYS 210B.

Complete ANY of the following Courses:

Fulfill ANY of the following requirements:
Complete ALL of the following Courses:
OR

Honors Program in Earth Systems & Earth Systems Thesis Workshop

Complete ALL of the following Courses:

During the senior year, honors students enroll in 1-9 units of EARTHSYS 199: Honors Program in Earth Systems within the thesis advisor’s section (please contact Earth Systems if your advisor is not listed). These units can be split among quarters, but may not substitute for any other required parts of the Earth Systems Curriculum. Completion of the honors thesis satisfies the program’s senior capstone requirement.


In addition, all senior honors students enroll in EARTHSYS 199A: Earth Systems Honors Workshop in Fall Quarter. EARTHSYS 199A comprises four workshop sessions (2 in fall, 1 each in winter and spring quarters)

OR

Additional elective coursework is required to complete the Notation in Science Communication; see NSC Overview for more details. NSC courses, both required and elective, may not be counted towards the breadth or depth requirements if used to fulfill the Earth Systems Capstone requirement.

Complete ALL of the following Courses:

All students must also pick one of the following options to complete the capstone requirement:
EARTHSYS 210P
EARTHSYS 199 (HONORS)
NOTATION IN SCIENCE COMMUNICATION (NSC)

Completion requirement
Complete ALL of the following Courses:

Students pursuing Honors in Earth Systems will not be required to complete Earthsys 210P. Instead, they will need to enroll in a minimum of two units of Earthsys 199.

Completion requirement
  • Foundational courses do not need to be taken for a letter grade.

  • All other courses must be taken for a letter grade.

Complete ALL of the following Courses:


Complete ALL of the following Courses:

Chemistry requirement may be fulfilled by program-approved CHEM course, such as 31A & 31B, CHEM 31E, or CHEM AP Exam score of 5. CHEM 31E was formerly CHEM 31M. AP Chart

Complete ANY of the following Courses:
Complete ANY of the following Courses:

*please note the pre-requisites for these courses listed on explore courses. Students may test out or petition to have AP credit satisfy the course above. AP Chart

Complete ALL of the following Courses:
Complete ALL of the following Courses:
Complete ANY of the following Courses:
Complete ANY of the following Courses:
Complete ANY of the following Courses:

6 total subcategory courses are required. All must be taken for a letter grade (3-5 units each), unless a letter grade is not an option.

Fulfill ALL of the following requirements:
Complete at least 2 of the following Courses:

EARTHSYS 105A and EARTHSYS105B count as 1 subcategory course.

AND
Complete ANY of the following Courses:
AND
Complete ANY of the following Courses:
AND
Complete ALL of the following Courses:

EARTHSYS 144 is required.

AND
Complete ANY of the following Courses:
Completion requirement
  • Foundational courses do not need to be taken for a letter grade.

  • All other courses must be taken for a letter grade.

Complete ALL of the following Courses:
Complete ALL of the following Courses:

*please note the pre-requisites for these courses listed on explore courses. Students may test out or petition to have AP credit satisfy the course above. AP CHART

Complete ALL of the following Courses:

Please note Math 21 is a pre-requisite for CME 100 and Math 51.

Complete ANY of the following Courses:
Complete ANY of the following Courses:
Complete ANY of the following Courses:
Complete ANY of the following Courses:

*Chemistry requirement may be fulfilled by program-approved CHEM course, such as 31A & 31B, CHEM 31E, or CHEM AP Exam score of 5. CHEM 31E was formerly CHEM 31M. AP Chart

Complete ANY of the following Courses:

Must take 7 courses total, 3-5 units each.

Must be taken for a letter grade, unless a letter grade is not an option.

You may not double count courses if they appear in more than one subcategory.

Fulfill ALL of the following requirements:
Complete ALL of the following Courses:
AND
Complete ANY of the following Courses:
AND
Complete ANY of the following Courses:

Must take 4 additional courses from the sub-categories below (at least one from each of Energy Resource and Technology, Energy Policy Economics and Entrepreneurship, and Sustainable Energy and Development. Methods subcategory is optional).

Courses taken to fulfill ‘Energy Fundamentals, Engineering, or Energy Sources’ may not double-count for subcategories below.

Fulfill ALL of the following requirements:
Complete at least 1 of the following Courses:
AND
Complete at least 1 of the following Courses:
AND
Complete at least 1 of the following Courses:
AND
Complete ANY of the following Courses:
Completion requirement
  • Foundational courses do not need to be taken for a letter grade.

  • All other courses must be taken for a letter grade.

Complete ALL of the following Courses:
Complete ALL of the following Courses:
  • Foundational courses do not need to be taken for a letter grade.

  • All other courses must be taken for a letter grade.

Complete ANY of the following Courses:
Complete ANY of the following Courses:

*Chemistry requirement may be fulfilled by program-approved CHEM course, such as 31A & 31B, CHEM 31E, or CHEM AP Exam score of 5. CHEM 31E was formerly CHEM 31M. AP Chart

Complete ALL of the following Courses:

Please note Math 21 is a pre-requisite for CME 100 and Math 51.

Complete ANY of the following Courses:
Complete ANY of the following Courses:
Complete ALL of the following Courses:
Complete ALL of the following Courses:

Must take 6 courses total, 3-5 units each.

Must be taken for a letter grade, unless a letter grade is not an option.

Fulfill ALL of the following requirements:
Complete at least 2 of the following Courses:
AND
Complete at least 2 of the following Courses:
AND
Complete at least 2 of the following Courses:
Completion requirement
  • Foundational courses do not need to be taken for a letter grade.

  • All other courses must be taken for a letter grade.

Complete ALL of the following Courses:
Complete ALL of the following Courses:

*may test out or petition to have AP Computer Science A credit satisfy the courses listed above. View the AP Chart for more information.

Complete ALL of the following Courses:
Complete ANY of the following Courses:
Complete ANY of the following Courses:
Complete ANY of the following Courses:

Choose at least 1 course in each of the three subcategories, a total of 5 is required, for 15-22 units.

2 of the required 5 subcategory courses must be a skills/methods courses. Please see note below each section for skills/methods courses.

All courses must be a minimum of 3 units and taken for a letter grade, unless a letter grade is not an option.

Fulfill ALL of the following requirements:
Complete at least 1 of the following Courses:

Skills/Methods:
ESS 268

2 of the required 5 subcategory courses must be a skills/methods courses.

AND
Complete at least 1 of the following Courses:

Students must take EARTHSYS 195 for 3 units.

AND
Complete at least 1 of the following Courses:

Skills/Methods:
CS 106B
EARTHSYS 141
EARTHSYS 142
EARTHSYS 144
EARTHSYS 145
EARTHSYS 153
ESS 268

2 of the required 5 subcategory courses must be a skills/methods courses.

Completion requirement
  • Foundational courses do not need to be taken for a letter grade.

  • All other courses must be taken for a letter grade.

Complete ANY of the following Courses:
Complete ALL of the following Courses:
Complete ANY of the following Courses:
Complete ALL of the following Courses:
Complete ANY of the following Courses:
Complete ANY of the following Courses:

*Please note the pre-requisites for Physics 41, 41E, and 45 listed on Navigator. Students may test out or petition to have AP credit satisfy the requirement. View the AP Chart for additional information.

Complete ALL of the following Courses:

*The Chemistry requirement may be fulfilled by program-approved CHEM course, such as 31A & 31B, CHEM 31E, or CHEM AP Exam score of 5. CHEM 31E was formerly CHEM 31M. View the AP Chart for additional information.

Complete ANY of the following Courses:

Must take 6 courses total, at least one course from each subcategory, 3-5 units each.

Must be taken for a letter grade, unless a letter grade is not an option.

You may not double count courses if they appear in more than one subcategory.

Recommended courses listed below each subcategory.

Fulfill ALL of the following requirements:
Complete at least 1 of the following Courses:

EARTHSYS 105A AND EARTHSYS 105B count as 1 course.

Recommended courses:
EARTHSYS 155
EARTHSYS 180

AND
Complete at least 1 of the following Courses:

Recommended Course(s):
EARTHSYS 104

AND
Complete at least 1 of the following Courses:

Students must take EARTHSYS 195 for 3 units.

AND
Complete ALL of the following Courses:
AND
Complete ANY of the following Courses:
Completion requirement
  • Foundational courses do not need to be taken for a letter grade.

  • All other courses must be taken for a letter grade.

Complete ALL of the following Courses:
Complete ANY of the following Courses:
Complete ANY of the following Courses:

*The Chemistry requirement may be fulfilled by program-approved CHEM course, such as 31A & 31B, CHEM 31E, or CHEM AP Exam score of 5. CHEM 31E was formerly CHEM 31M. View the AP Chart for additional information.

Complete ANY of the following Courses:
Complete ALL of the following Courses:

*Please note the pre-requisites for Physics 41, 41E, and 45 listed on Navigator. Students may test out or petition to have AP credit satisfy the requirement. View the AP Chart for additional information.

Complete ANY of the following Courses:
Complete ALL of the following Courses:
Complete ALL of the following Courses:
Complete ANY of the following Courses:

Students must take EARTHSYS 195 for 3 units.

Choose 1 subcategory below and complete all courses within that subcategory.

An additional two courses are required from either the "Electives" subcategory or another subcategory of your choice.

Subcategory courses must be a minimum of 3 units and taken for a letter grade, unless a letter grade option is not available.

Fulfill ANY of the following requirements:
Complete ALL of the following Courses:
OR
Complete ALL of the following Courses:
OR
Complete ALL of the following Courses:
OR
Complete at least 2 of the following Courses:
Complete ANY of the following Courses:

BOSP Australia- OSPAUSTL 10, 28, 32, 40, 50 (12 units):
Fulfills: Biology foundation (4), Human Dimensions (4), and one elective, for Marine Biology and Conservation and Oceanography subcategories.

Stanford at Sea - Earthsys 323/OCEANS 182H/ BIOHOPK 182H (16 units):
Fulfills: Biology foundation (4), WIM (4), Human Dimensions (4), and one elective, for Marine Biology and Conservation and Oceanography subcategories.

Wrigley Field Program in Hawaii- SUSTAIN 116, 117 and 118 (12 units):
Fulfills: Biology Foundation (4), Geology Foundation (4), and Human Dimensions (4) for all subcategories.

*BOSP and off-campus course offerings may change. Please see Earth Systems Student Services staff if you have questions about a course not listed.

Completion requirement
  • Foundational courses do not need to be taken for a letter grade.

  • All other courses must be taken for a letter grade.

Complete ANY of the following Courses:
Complete ANY of the following Courses:
Complete ALL of the following Courses:
Complete ALL of the following Courses:

*The Chemistry requirement may be fulfilled by program-approved CHEM course, such as 31A & 31B, CHEM 31E, or CHEM AP Exam score of 5. CHEM 31E was formerly CHEM 31M. View the AP Chart for additional information.

Complete ANY of the following Courses:
Complete ANY of the following Courses:

*Please note the pre-requisites for Physics 41 and 41E listed on Navigator. Students may test out or petition to have AP credit satisfy the requirement. View the AP Chart for additional information.

Complete ALL of the following Courses:
Complete ANY of the following Courses:
Complete ANY of the following Courses:

6 total subcategory courses are required. Subcategory courses must be a minimum of 3 units and taken for a letter grade, unless a letter grade option is not available.

Fulfill ALL of the following requirements:
Complete ALL of the following Courses:
AND

Must complete 2 Biogeophysical Dimensions courses. EARTHSYS 155 is required and counts as 1 of 2 required courses.

Fulfill ALL of the following requirements:
Complete ALL of the following Courses:
AND
Complete at least 1 of the following Courses:
AND
Complete ANY of the following Courses:
AND
Complete ANY of the following Courses:
Completion requirement
  • Foundational courses do not need to be taken for a letter grade.

  • All other courses must be taken for a letter grade.

Complete ALL of the following Courses:
Complete ALL of the following Courses:

*may test out or petition to have AP Computer Science A credit satisfy the course listed above.

Complete ALL of the following Courses:

See Math Placement webpage for more information

Complete at least 1 of the following Courses:
Complete at least 1 of the following Courses:
Complete at least 1 of the following Courses:

Choose a second Planetary Science course or Environmental Science course from above OR choose one from this list of Additional Science courses.

Complete at least 1 of the following Courses:
Complete at least 1 of the following Courses:

Choose 3 courses, for 9-12 units. 1 course must focus on qualitative methods (*):

Complete at least 3 of the following Courses:

1 of the 3 required courses must focus on Qualitative Methods.

Qualitative Methods courses:
ANTHRO 91
CHPR 247
CSRE 146A
HUMBIO 82A
PEDS 202C
SOC 180A
URBANST 123B

Take 5 courses, at least 3 units in each subcategory, and a minimum of 15 units total across all subcategories.

Fulfill ALL of the following requirements:

Must complete a minimum of 3 units in each subcategory.

You may not double count courses that appear in more than one category/section.

Complete at least 1 of the following Courses:
AND

Must complete a minimum of 3 units in each subcategory.

You may not double count courses that appear in more than one category/section.

Complete at least 1 of the following Courses:
AND

Must complete a minimum of 3 units in each subcategory.

You may not double count courses that appear in more than one category/section.

Complete at least 1 of the following Courses:

Students must take EARTHSYS 195 for 3 units.

Subcategory courses must be taken for a letter grade, unless a letter grade option is not available.