CAS: Earth & Environmental Sciences

Sample Pathway

Below is an example of a four-year plan of a College of General Studies student pursuing a degree in earth & environmental sciences. Students will work with their CGS academic advisors and the earth and environment department to plan their own pathway to an earth & environmental sciences degree.

Gap Semester Recommended external course: Calculus I (equivalent to CAS MA 123). Note: Prior approval must be granted for all external coursework.
  Semester I Semester II
Freshman Year CGS RH 103
CGS SS 103
CAS EE 107
CAS MA 124
CGS Required Courses (London or Boston-New England semester)
Sophomore Year CGS HU 201
CGS NS 201
CAS CH 171 or CH 101 or CH 109 or CH 111
CAS EE 100
CGS HU 202
CGS SS 202
CAS EE 270*
CAS BI 108**
Summer Term Environmental Internship
Junior Year CAS PY 251 or CAS PY 211
Principal Elective Course
Principal Elective Course
Second Language (if needed)
Principal Elective Course
Principal Elective Course
Elective***
Second Language (if needed) 
Summer Term Environmental Internship
Senior Year Principal Elective Course
Different Track Elective
Elective***
Second Language (if needed)
Different Track Elective
Elective***
Elective***
Second Language (if needed) 

Note: Earth & environment majors may petition to have MA115, MA213 or EC203 count for EE270. Please consult with Sayaka Yamaki in the earth and environment department.

*Please contact Sayaka Yamaki to request permission to add the class.

**One of: CAS BI 108; CH 102 or 110 or 112 or 172; or PY 212 or 252

***Choose your non-major electives carefully to fulfill any remaining BU Hub requirements. You will find a list of all of the courses that carry Hub units on the University’s BU Hub website. External courses are not eligible for Hub general education credit.

Earth & environment courses by HUB Unit can be found on the Earth & Environment Department webpage

College of General Studies Program Requirements

  • Two rhetoric courses: CGS RH 103 and CGS RH 104
    • CGS RH 104 is taken during the London semester
  • Two natural science courses: CGS NS 201 and CGS NS 202
  • Three social science courses:
    • CGS SS 104 is required and is taken during the London semester
    • Students select at least two additional SS courses and will work with their academic advisor to determine course selection
  • Three humanities courses:
    • CGS HU 104 is required and is taken during the London semester
    • Students select at least two additional HU courses and will work with their academic advisor to determine course selection

Note: Students who are exempt from CGS NS 202 must enroll in at least one CGS course in semester II of sophomore year.

Major Requirements

The major in earth & environmental sciences requires a total of 16 courses, all completed with a grade of ‘C’ or higher. Those 16 courses comprise three required core introductory courses; six required related mathematics and science courses; and seven approved principal electives, five of which must come from a single group (Ecosystems, Earth & Climate, or Earth Observations), and the remaining two of which must be chosen from outside that group. For required courses, please see the CAS Bulletin.

Please consult with Sayaka Yamaki in the earth and environment department for course planning and advice. For more information about the major, please see the Earth & Environment Department webpage.

If you have Advanced Placement (AP), International Baccalaureate (IB) or other external credit, please see the Advanced Credit Guide.

Continuation Requirements

  • Completion of the CGS required courses and appropriate electives
  • Cumulative GPA greater than or equal to 2.00

Graduation Requirements

Boston University students completing a degree in CAS must also complete the following requirements. 

  • BU Hub requirements
    • Students who take the specific CGS courses noted on the pathway above will fulfill all BU Hub requirements except the units listed below. These remaining Hub units will be fulfilled through the following courses:
    • Quantitative Reasoning II (1 unit) fulfilled by CAS MA 124
    • Teamwork/Collaboration (2 units) fulfilled by CAS BI 108 and CAS PY 251/211
    • You will fulfill the remaining Hub units – Creativity/Innovation (1 unit), Global Citizenship and Intercultural Literacy (1 unit), and Writing-Intensive Course (1 unit) – through the courses you take for your CAS major and/or other electives
  • CAS requirements:
  • Earth & environmental sciences major requirements
  • CAS requires a minimum of 128 credits, excluding PDP, ROTC, and CAS FY and SY courses.

This is a sample pathway to be used in consultation with your CGS Academic Advisor.

It is subject to change according to course availability and individual circumstances.

Last revised: 04/04/2024