The M.S. in Sustainability Science has now graduated its second cohort, expanding a formidable network of sustainability professionals. Meet some of our graduates below!

Madeleine Siegel

February 2021


Santa Monica, California

What drew you to the SUSCI program? 

I was drawn to the program because of its mission to apply science for the good of the environment and society.

Professional experience 

I have worked in a few different fields related to environmental science and policy, ranging from local to international levels. During graduate school, I conducted research for the New York Attorney General’s Office to support the Office’s cases and investigations to protect the people and environment of New York. Additionally, I worked at Columbia Law School’s Sabin Center for Climate Change Law, which gave me the opportunity to research the impact of the Trump Administration’s environmental deregulation, from the exacerbation of climate change to attempts to block scientific publications and education.


Favorite Professor

I feel very lucky to have had Professor Radley Horton as my advisor while pursuing my master’s degree. He supported me in thinking creatively about how to structure my program curriculum and more broadly, in seeing the interconnectivity among environmental and social systems.

Career Aspirations

I hope to work at the intersection of environmental science and policy to build toward a more just society and protect all people and the planet.

Tyler Ellis

February 2021


Reno, Nevada

What drew you to the SUSCI program? 

The ability to work on a master's degree while continuing to work full time, while also taking courses from LDEO researchers who are experts in their fields and broadening my expertise in sustainability topics.

Professional experience 

I have 7 years experience as Lab Manager & ICPMS Research Analyst in an aqueous geochemistry lab at LDEO along with 13+ years in research and commercial environmental chemistry labs.


Favorite Course

Environmental Sustainability Indicators: Construction and Use, with Professor Alex de Sherbinin, introduced a topic that is fairly ubiquitous (we use indicators to understand much about the world, from social science to climate change), but the amount of work and rigor that goes into developing useful indicators is a complex subject which he taught very well.

Career Aspirations

For now, I hope to keep contributing to the important work we do here at LDEO related to arsenic and lead exposure from water and soil. Further down the road, I hope to bring my knowledge of sustainability to regulatory agencies in an effort to drive sustainable change through government.

Seyena Simpson

February 2021


Kingston, Jamaica

What drew you to the SUSCI program? 

I am interested in human-environment interactions, how we as human beings are affecting the planet, and how we can build a sustainable future using science. The Sustainability Science program is designed to address such issues and so seemed like a good fit for me. I was also looking for a professional master’s program that would prepare me for a career in this field.

Undergraduate Background

My undergraduate degrees were BSc in Environmental Science and Policy and BSc in Geology.


Favorite Course

My favorite course was Environmental Investigation and Remediation, where we looked at the major steps involved in the investigation, assessment, and remediation of contaminated sites. 

Career Aspirations

I am interested in environmental consulting. In the future, I would also love to work with organizations doing environmental projects in developing countries. 


Jeffrey Fralick

May 2020

Convinced that science should be the basis for major decision and policy making, Jeffrey Fralick spends his time researching how to better address climate challenges.

Before joining the Sustainability Science program, Fralick graduated from Cornell University. In the past, he has conducted research on water quality of streams and rivers across the Delaware-River Watershed, helped to organize a state-wide environmental lobby day at the Pennsylvania capital, and served as a research assistant for Steven Cohen, director of the Earth Institute’s Research Program on Sustainability Policy and Management. 


Isabela Brown

May 2020

Isabela Brown has a background in mathematics and environmental modeling. She spent the past few years building a national ship emissions model for the U.S. Environmental Protection Agency. Isabela is interested in the way in which model construction itself determines who has agency to make sustainable change. She sought out a graduate program that would assist her in intentionally integrating social, political, and scientific frameworks into environmental models and consultations.

Kevin Webb.png

Kevin Webb

May 2020

Kevin Webb comes from a career of more than 8 years in early-stage venture capital and is now an alumnus of the Sustainability Science Program. He moved to New York with his dog Chewie, having lived in San Francisco and the broader Bay Area most of his life. Kevin is the founder of Sustainability Science’s student organization, RESCUE. 



Notice on Campus Visits

In light of the evolving Covid-19 situation and the University’s guidelines for on-campus activity, Columbia University SPS Admissions has suspended all in-person campus visits for the Fall 2020 semester. We invite prospective students to drop by our virtual walk-in hours with general admissions questions.


Weekly virtual walk-in hours 

Tuesdays (10:00 AM to 12:00 PM EDT)

Thursdays (12:00 PM to 2:00 PM EDT)


Admissions Counselors can connect you directly to students, alumni, faculty, and facilitate virtual class visits. You can also register for an information session. Our virtual events allow you to interact with our admissions staff and learn more about the Columbia SPS community.  If you have any questions, please contact our office at or 212-854-9666. 


If you would like to receive more information about the M.S. in Sustainability Management program, please contact Samantha Ostrowski, Associate Director, at

Campus Visits, Graduate School Fairs & Company Presentations

We are eager to host you on the Columbia University campus or to meet you at one of our information sessions.


Our program offers a part-time option for working professionals. If your company would like to host an information session, please contact us. For more information about the graduate school fairs that we attend throughout the United States, please contact Chandler Precht, Program Manager at


Program Contacts

Samantha Ostrowski

Associate Director

Mariví Perdomo Caba

Senior Program Manager


Office of Admissions
School of Professional Studies
203 Lewisohn Hall




Fall 2021: May 15, 2021

Spring 2022: November 1, 2021


For more information about the HBCU Fellowship,

please visit this website or contact

If you would like to receive more information about the M.S. in Sustainability Science program, please submit your contact information below.

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