Foundations & Breadth:

BIO 41 and BIO 43 or 43H or EARTHSYS 5
CHEM 31A & 31B or 31X and CHEM 33
ECON 1A
G&ES 1A, B, or C or EESS 2
MATH 19, 20, 21 or 41, 42
MATH 51
PHYSICS 41 or EARTHSYS 70
Statistics: BIO 174H or ECON 102A or EESS 160 or 161 or STATS 60 or 110 or 116 or 141
EARTHSYS 10
EARTHSYS 111
EARTHSYS 112
EARTHSYS 210A, B, C, or D (Senior Seminar)
EARTHSYS 260 (Internship) or BIO 175H
WIM: EARTHSYS 200 or fulfillment via EARTHSYS 260 iterative paper revisions during Senior Seminar

Track: Choose one course from each sub-category below; total 6 required.  You may not take more than 2 courses from any one sub-category.

Ecology:

BIO 101: Ecology
BIO 136: Evolutionary Paleobiology
BIO 145: Behavioral Ecology
BIO 164: Biosphere-Atmosphere Interactions
BIO 175: Tropical Ecology and Conservation
GES 123: Invertebrate Paleobiology

Biogeochemistry:

BIO 216: Terrestrial Biogeochemistry
EESS 143: Marine Biogeochemistry
EESS 155: Science of Soils

Conservation Biology

BIO 173H: Marine Conservation Biology
HUMBIO 112: Conservation Biology

Ecosystems and Society

ANTHRO 115A: Environmental Crises and State Collapse
ANTHRO 162: Indigenous Peoples and Environmental Problems
ANTHRO 165: Parks and Peoples: The Benefits and Costs of Protected Area Conservation
ANTHRO 166: Political Ecology of Tropical Land Use
HUMBIO 111: Human Dimensions of Global Environmental Change
HUMBIO 114: Environmental Change and Emerging Infectious Diseases
HUMBIO 118: Theory of Ecological and Environmental Anthropology

Electives: TWO additional courses at the 100-level or above are required. Electives allow students to personalize their Earth Systems curriculum by pursuing higher-level courses offered in their focus area, or by incorporating new academic perspectives. Each must be a minimum of 3 units and approved by an advisor.