Our Team

  • Matthew Eisenson joined the Sabin Center in May 2022, where his work is focused on leading and expanding the Renewable Energy Legal Defense Initiative (RELDI), which uses legal research and engagement to support siting utility- and community-scale renewable energy facilities and associated transmission and storage equipment.

    Before joining the Sabin Center, Matthew served for four years as an Assistant Attorney General in the Environmental Protection Bureau of the New York State Attorney General’s Office. He also previously worked as a litigation associate at Cleary Gottlieb Steen & Hamilton LLP and as a law clerk for Senior U.S. District Judge Berle M. Schiller of the Eastern District of Pennsylvania. Before law school, he served as a special assistant to the President and Executive Director of the Natural Resources Defense Council.

    Matthew received a J.D. from Yale Law School in 2015 and a B.A. in History, magna cum laude, Phi Beta Kappa, with distinction in the major, from Yale College in 2009.

  • Martin Lockman joined the Sabin Center in 2022 as the 2022-2024 Climate Law Fellow. Prior to joining the Sabin Center, Martin specialized in renewable energy and infrastructure finance at Milbank LLP’s New York office. From 2021-2022, Martin clerked for the Honorable Cynthia M. Rufe on the United States District Court for the Eastern District of Pennsylvania.

    Martin graduated from Columbia Law School in 2019, where he was a James Kent Scholar (2017-2019) and a Harlan Fiske Stone Scholar (2016-2017). At Columbia, Martin served as Articles Editor for the Columbia Human Rights Law Review, worked as a Research Assistant at the Columbia Center on Sustainable Investment, and spent a semester in the Law and Finance MLS program at Oxford University through Columbia’s Global Alliance Program. Before law school, Martin worked as a community organizer in the coalfields of southern West Virginia. He received his Bachelor of Arts from Washington University in St. Louis in 2014.

    Martin’s recent publications include Fencing the Wind: Property Rights in Renewable Energy, 125 W.V. L. Rev. (forthcoming 2022) and Lenders as Monitors of Risk Devolution, 48–49 Finance & the Common Good (2021).

  • Prior to joining CSLDF, Lauren was a litigation associate at the international law firm Dechert LLP. At Dechert, she represented commercial and individual clients on a variety of multi-billion and multi-million dollar commercial disputes as well as litigation over Freedom of Information Act (FOIA) requests, document discovery claims, and defamation claims.

    She has also held legal and policy positions at the U.S. Environmental Protection Agency. Lauren graduated from the University of Pennsylvania Law School.

  • L. Margaret Barry is the Environmental Law Writer at Arnold & Porter Kaye Scholer LLP. She maintains the U.S. Climate Change Litigation Database, a collaboration between Arnold & Porter and the Sabin Center, and is the managing editor of the Environmental Law in New York newsletter. She formerly practiced in the environmental client service group at another law firm. Margaret received her J.D. from New York University School of Law, where she was the editor-in-chief of the New York University Environmental Law Journal. She is currently a co-chair of the Environmental Law Committee of the New York City Bar Association.

  • Ilmi Granoff is a Senior Fellow at the Sabin Center for Climate Change Law and Adjunct Research Scholar at Columbia Law School. He is an attorney and climate and sustainable finance expert with over two decades of experience—spanning public, private, and third-sector institutions—working on the policy and financing of the transition to a net-zero greenhouse gas, sustainable economy. He serves as a trusted advisor, manager, and fiduciary for philanthropies, governments, financial institutions, and companies on sustainable finance and policy matters in the US, Europe, Latin America, and Africa, and an accomplished speaker, researcher, and author. 

    Ilmi is also a member of the Climate-related Financial Risk Advisory Committee (CFRAC) of the Financial Stability Oversight Council at the US Department of the Treasury, and a Visiting Senior Fellow at the Grantham Research Institute at the London School of Economics. llmi is a principal at the strategic advisory firm Climate Technology Group and at the private investment firm Adventure Capital and a Senior Advisor to the ClimateWorks Foundation, where he recently served as a Senior Director and established and led their Finance Program. Previously, Ilmi headed the Green Growth Business Unit at the Overseas Development Institute, served as the Special Counsel for Climate and Environment at the African Development Bank, practiced law in the global energy and infrastructure group at Freshfields, and worked at the United Nations Development Program. He holds a J.D. from New York University School of Law, master's degrees in international relations and environmental science from Yale University, and a B.A. (High Honors) from Swarthmore College.

  • Dyan is a postdoctoral research scholar at Columbia Law School and a fellow at the Sabin Center for Climate Change Law. Her work with the Initiative on Climate Risk & Resilience Law focuses on the intersection between climate risk and resilience law and policy, financial regulation, and energy regulation.

    Dyan previously worked as a Research Assistant at the Georgetown Climate Center, where she conducted research on opportunities for low-income and disadvantaged communities to capitalize on funding under the Biden-Harris Justice40 Initiative and other federal transportation grants, and on the U.S. healthcare industry's emissions reduction strategies. She practiced corporate and commercial law at Quisumbing Torres in the Philippines, a member firm of Baker McKenzie, for almost three years.

    Dyan received her LL.M. in Environmental and Energy Law, with distinction, from the Georgetown University Law Center in 2022, and her J.D., second honors, from Ateneo de Manila University (Philippines) in 2016. She also holds a B.A. in Management Economics from Ateneo de Manila University (Philippines).

  • Dr. Maria Antonia joined the Sabin Center in September 2021 as the Global Climate Litigation Fellow. Prior to the Sabin Center, she was a senior attorney at the Environment Program of the Cyrus R. Vance Center for International Justice, where she provided pro bono legal services to NGOs across the globe, especially in issues related to protected areas and the interface between human rights and the environment. Maria Antonia was previously a fellow at the World Resources Institute. The fellowship followed several years working in private practice in Rio de Janeiro, Brazil.

    Maria Antonia serves as the Deputy Director of the Global Network for Human Rights and the Environment (GNHRE), where she works with scholars and practitioners in the region to study the interface between human rights and the environment. In addition, Maria Antonia is a member of the IUCN World Commission on Environmental Law. 

    Maria Antonia is the author of several publications on regional and international environmental law. She specifically focuses on issues concerning environmental rights, the reshaping of the existing framework of international environmental law, and climate litigation. Originally from Brazil, she also researches the environmental protection of the Amazon ecosystem, emphasizing regional cooperation. She is a TEDx speaker and a frequent speaker at conferences and symposiums.

    Maria Antonia completed her Doctorate in Juridical Studies (S.JD. ) at the Elisabeth Haub School of Law at Pace University in 2022.  She received a dual LL.M., magna cum laude, with certificates in environmental law and comparative legal studies, from the Elisabeth Haub School of Law at Pace University, in 2013. She received her LL.B. from the Pontifícia Universidade Católica of Rio de Janeiro, Brazil.

  • Cynthia Hanawalt is a Senior Fellow at the Sabin Center for Climate Change Law. An accomplished securities lawyer, Ms. Hanawalt leads the Sabin Center’s work in support of ambitious, durable financial regulation on climate-related risk at the federal and state level. She is affiliated with Columbia Law School and the Initiative for Climate Risk & Resilience Law, a coalition of scholars driving legal innovation in government and the private sector to address the consequences of climate change. She collaborates with a range of investor networks and environmental groups, and writes regularly on issues of financial regulation and policy. She has been quoted in numerous media outlets, including The New York Times.

    Prior to joining the Sabin Center, Ms. Hanawalt served as Chief of the Investor Protection Bureau for the New York State Office of the Attorney General, where she led the team charged with enforcing the state’s securities laws. Under her leadership, the Bureau recovered over $850M on behalf of New York investors, and achieved groundbreaking results in electronic trading and cryptocurrency matters. Previously, Ms. Hanawalt was a Partner at the securities law firm Bleichmar Fonti & Auld LLP.

    Cynthia also serves as a Trustee and Chair of the Audit Committee of Wave Hill, a public garden and cultural center in the Bronx. She is a graduate of Columbia Law School, where she was a Harlan Fiske Stone Scholar, and Duke University, where she received the William J. Griffith University Service Award.

  • Dr. Carolina Arlota is currently an Associate Research Scholar at Columbia Law School under the Sabin Center for Climate Change Law. Her work explores international and domestic (U.S.) laws governing the cross-border transport of carbon dioxide (CO2) for sequestration, and how such transportation fits into broader climate and environmental protection regimes, including the Paris Agreement on Climate Change, carbon markets and emissions trading. This line of investigation builds on her previous research on the Paris Agreement and related climate policies. Carolina’s research interests are further detailed at her SSRN webpage.

    Carolina is the co-editor of the book Carbon Capture and Storage in International Policyand Law: Perspectives on Sustainable Development, Climate Change, and Energy Transition (Elsevier, Oct. 2021). She publishes in law journals as well as in renowned peer-reviewed journals, such as the Review of Law & Economics, and the European Business Law. Her academic credentials also include being a referee for International Review of Law and EconomicsEnergy Policy, and the Journal of Law and Courts. In addition, she is an invited reviewer for Routledge Publishers.

    Carolina holds an LL.M. and a J.S.D. from the University of Illinois at Urbana-Champaign, College of Law. Her doctoral thesis investigates the Brazilian federalism vis-à-vis the U.S. federal system discussing how federalism choices adopted by the Brazilian Constitution of 1988 have impacted judicial review since then. In Illinois, Carolina was awarded the Lemann Graduate Fellowship. At the time, she was also a recipient of coveted fellowships granted by the TINKER Foundation to conduct field studies in Brazil and by the Fondation pour le Droit Continental (Université Paris II, Pantheon Assas, located in Paris, France).

    Prior to joining the Sabin Center, Carolina was a Visiting Assistant Professor at the University of Oklahoma, College of Law, where she has taught several courses on international law, including International Commercial and Investment Arbitration, International Business Transactions, Comparative Law, European Union Law, and International Energy Law. Before moving to the United States, Carolina held prestigious clerkships in Brazil and worked as an attorney for Petroleo Brasileiro S.A—PETROBRAS, the Brazilian state-controlled oil company. During her tenure at PETROBRAS, then among the top ten largest oil companies, her practice focused on International Commercial Arbitration and International Business Transactions. Carolina is a member in good standing of the New York Bar as well as of the Brazilian National Bar Association. She currently co-chairs the American Branch of the International Law Association—ABILA’s committee on International Environmental and Energy Law.


  • Andrea Nishi joined the Sabin Center in September 2022 as a Climate Justice Fellow. Andrea graduated from Columbia Law School in 2020. While there, she served as the Executive Essays & Reviews Editor for the Columbia Law Review.

  • Amy Turner joined the Sabin Center in 2019 as a Senior Fellow for the Cities Climate Law Initiative, where her work focuses on the laws and legal tools cities use to achieve their climate mitigation commitments. In addition to legal academic research on municipal carbon mitigation law and policy, Amy consults directly with city attorneys and sustainability professionals on legal questions relating to carbon mitigation in the buildings, transportation, waste and energy sectors. She is particularly interested in the intersection of environmental and municipal law and in identifying legal pathways for cities to enact policies consistent with their ambitious greenhouse gas emissions reduction targets.

    Prior to her work with the Sabin Center, Amy was the executive director and a co-founder of the NYC Climate Action Alliance, and she continues to serve on the organization’s board of directors. She practiced environmental and transactional law for ten years at Davis Polk & Wardwell LLP, Milbank, Tweed, Hadley & McCloy LLP and in solo practice. Amy graduated from Middlebury College, magna cum laude, and from Harvard Law School, where she was an articles and technical editor for the Harvard Environmental Law Review. She currently serves as co-chair for the New York City Bar Association’s Committee on Environmental Law and as secretary of the board of directors for the Brooklyn Greenway Initiative.



Profiles, showing -

    For a list of former fellows, please click here. (If you are a former fellow and would like to be included in this list, please contact Tiffany Challe – tc2868@columbia.edu)

    For a list of former affiliates, please click here. (If you are a former affiliate and would like to be included in this list, please contact Tiffany Challe – tc2868@columbia.edu)