alumni profiles
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Alumni Spotlight: How Columbia Prepared Me for Work at the Nature Conservancy
Alison Miller, a senior leader at the Nature Conservancy, reflects on her time in Columbia’s MPA-ESP program and how it helped shape her career path.
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Alumni Spotlight: Bridging Science, Policy and Strategy for Climate Action
Tiffany Wu, a graduate of the MPA-ESP program, now works on climate and sustainability projects spanning carbon markets, corporate greenhouse gas accounting and clean energy.
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Alumni Spotlight: Advancing Ocean Governance Through Research, Policy and Diplomacy
Since graduating from the MPA-ESP program, Jeremy Raguain’s work has focused on ocean conservation and marine biodiversity.
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Alumni Spotlight: A Journey From Climate Conservation to Corporate Consulting
Alicia Kurnia Liono talks about her background in wildlife conservation and biology, and why she chose to pursue sustainable finance and consulting.
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Women in ESG: Working at the Intersection of Business and Sustainability
Karina Alejos, a graduate of Columbia’s Undergraduate Program in Sustainable Development, shares her path to becoming an environmental, social and governance consultant.
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Alumni Spotlight: Becoming the Bridge Between Environmental Science and Policy
MPA-ESP graduate Patrick Iler reflects on his time in the program and how it helped him hone a career path in conservation and sustainable development.
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Alumni Spotlight: When the Student Becomes the Teacher
A recent graduate of the Master of Science in Sustainability Science program, Reuben Goh hopes to convey his enthusiasm for the environment to future students.
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Alumni Spotlight: Centering Humans in Asia’s Energy Transition
MPA-ESP graduate Srishti Mahajan discusses how the program helped advance not only her career but her understanding of human dynamics.
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Alumni Spotlight: What It’s Like to Work at SpaceX
Daryush Nourbaha says a master’s degree in sustainability science prepared him well for his role at one of the world’s most high-profile companies. Plus he got to watch a rocket launch.

AGU25, the premier Earth and space science conference, takes place December 15-19, 2025 in New Orleans, Louisiana. This year’s theme—Where Science Connects Us—puts in focus how science depends on connection, from the lab to the field to the ballot box. Once again, Lamont-Doherty Earth Observatory and Columbia Climate School scientists, experts, students, and educators are playing an active role, sharing our research and helping shape the future of our planet. #AGU25 Learn More
