Staff Bios

Vicki Arroyo

Vicki Arroyo

Vicki Arroyo is the Executive Director of the Georgetown Climate Center at Georgetown Law, where she also serves as the Assistant Dean of Centers and Institutes and a Professor from Practice. 

Professor Arroyo oversees the Center’s work at the nexus of climate and energy policy, supervising staff and student work on climate mitigation and adaptation at the state and federal level. She teaches “experiential” environmental law courses to both law and public policy students. She is also a member of the faculty steering committee for the Georgetown Environment Initiativea cross-campus effort to advance the interdisciplinary study of the environment in relation to society, scientific understanding, and sound policy.

She previously worked at the Pew Center on Global Climate Change, including serving as the Pew Center’s Vice President for Domestic Policy and General Counsel. For over a decade, she directed the Pew Center’s policy analysis, science, adaptation, economics, and domestic policy programs. She also served as Managing Editor of the Center’s book and oversaw publication of numerous reports and policy briefs.

In addition to teaching at Georgetown Law, she has taught courses on environmental policy and climate change at Catholic University, George Mason University’s graduate public policy program, and Tulane Law School. Previously, she practiced environmental law with Kilpatrick Stockton and other private firms and served in two offices at U.S. EPA: the Office of Air and Radiation and the Office of Research and Development where she reviewed development of standards under the Clean Air Act. From 1988 to 1991, she created and directed the Louisiana Department of Environmental Quality’s policy office, and served during some of that time as Governor Buddy Roemer's environmental advisor.

Professor Arroyo currently serves as Vice Chair of the Executive Committee of the National Transportation Research Board of the National Academy of Sciences and as Chair of TRB’s Resilience and Sustainability Task Force. She also serves on the Board of Advisors of the Institute of Transportation at UC Davis. She previously served for seven years on the Advisory Board to the National Science Foundation’s Geosciences Directorate, and for three years on the Board of Trustees to the University Corporation for Atmospheric Research.  She has also held positions on California’s Economics and Allocation Advisory Committee, on the external advisory committee to the National Center for Atmospheric Research, and on several other federal panels, including those reviewing economic modeling of climate legislation (DOE’s Energy Information Administration) and on climate change adaptation along the Gulf Coast (Climate Change Science Program). She is Associate Editor of the journal Climate Policy and a member of the editoral board for The Georgetown Environmental Law Review

She holds a B.S. in biology, high honors, from Emory (double major in philosophy); a Masters of Public Administration from Harvard (receiving the Don K. Price award for academic achievement and commitment to public service, the top honors in her program), and a J.D., Magna Cum Laude, from Georgetown Law, where she was Editor-in-Chief of The Georgetown International Environmental Law Review.

Selected Publications

“State and Local Climate Leadership in the Trumpocene," Carbon and Climate Law Review, Special Issue: “The Changing Prospects for Climate Law and Policy in the U.S.,” October 2017.

“New Strategies for Reducing Transportation Emissions and Preparing for Climate Impacts,” Fordham Urban Law Journal, (co-authors: Kathryn Zyla and Gabe Pacyniak) October 2017.

"The U.S. is the Biggest Loser Thanks to Trump’s Calamitous Act,” The Guardian, June 2017.

“Climate Change, Sustainable Development, and Ecosystems – 2016 Year in Review,” American Bar Association, March 2017 (contributing author).

“State Innovation on Climate Change: Reducing Emissions from Key Sectors while Preparing for a New Normal,” Harvard Law and Policy Review, (co-authors: Kathryn Zyla, Gabe Pacyniak, and Melissa Deas) Summer 2016.

“Climate Change, Sustainable Development, and Ecosystems – 2015 Year in Review,” American Bar Association, 2016 (contributing author).

“The Coming Refugee Crisis: When Home Leaves Us,” The Guardian, May 2016.

Saving Ourselves: Interviews with World Leaders on the Sustainable Transition, World Scientific, (contributor) 2016.

“Think Beyond Homes and Roads to Better Prepare for Climate Change,” New York Times, October 2015.

"Lessons Learned from Rebuilding New Orleans: Consider Our Changing Climate," Huffington Post, August 2015.

“Transportation Policy,” in Climate Change and Public Health, (co-author: Kathryn Zyla) Spring 2015.

“Promoting Adaptation Through Policy,” in The State of Adaptation in the U.S., commissioned and published by the MacArthur Foundation, April 2013.

“State and Local Adaptation to Climate Change,” in Adaptation to Climate Change and the Law, American Bar Assn. book  (co-author: Terri Cruce), Sept. 2012.

“Are there Winning Strategies for Climate Policy?” Review of the book Climate Clever:  How Governments Can Tackle Climate Change (and Still Win Elections) in Climate Policy, September 2012.

“Regional Action: A U.S. Perspective,” in Regional and State Policies for Economic Competitiveness and Mitigation, Heinrich Boll Foundation Transatlantic Dialogue (fall 2011).

“Upside-down Cooperative Federalism: Climate Change Policymaking and the States.”  Virginia Environmental Law Journal, 2011 (Vivian Thomson co-author).

“US Climate Policy,” in Cerdá, E. and Labandeira, X. (eds) Climate Change Policies. Global Challenges and Future Prospects, Edward Elgar, Cheltenham (UK), 2010.

“Current Directions in the U.S. Climate Change Debate: Prospects for a Post-2012 World,” UN Development Report 2007.

“Change in the Marketplace,” in Creating a Climate for Change: Communicating Climate Change, Cambridge University Press, 2007.
“Climate Policy Should Focus on Reducing Emissions,” in Environmental Forum, ELI, 2007.

“Addressing the Costs of Climate Change Mitigation,” and “Establishing a Domestic GHG Reduction Target,” two chapters in: Climate Change Policy Dialogue, Aspen Institute, 2004.

“US Domestic Climate Policy,” Climate Policy, 2001 (with Henry Lee and Manik Roy).

Managing Editor of  book: Climate Change: Science, Strategies, and Solutions, Pew Center on Global Climate Change, Brill, 2001 and authored chapter on “Climate Change Legislation in the U.S.”

“Jefferson Hazardous Waste Negotiation Game,” Harvard Negotiation Project, 1987 (with Larry Susskind).

“Waste Wars: The Fight Over Hazardous Waste Importation,” Georgetown International Environmental Law Review, 1993.


Kathryn Zyla

Kathryn Zyla

Kathryn Zyla is Deputy Director of the Georgetown Climate Center. She oversees staff research and policy analysis and facilitates multi-state dialogues on issues such as multi-state emissions trading approaches, low-carbon transportation policies, and more.

Her own research includes state and federal renewable energy policies, public utility regulation relating to clean energy and electric vehicles, legal considerations related to the deployment of microgrids, market-based policies to reduce greenhouse gas emissions in the transportation sector, and opportunities to link stand-alone emissions programs. She also facilitates and oversees research and analysis in support of the Transportation and Climate Initiative of the northeast and mid-Atlantic states.

Ms. Zyla previously served as Director of Research and Policy Analysis for the Climate Center, as Senior Associate in the Climate and Energy Program at the World Resources Institute, and as Senior Research Fellow for Domestic Policy at the Pew Center on Global Climate Change. She has a BS in engineering from Swarthmore College, a Master of Environmental Management from the Yale School of Forestry, and a JD, cum laude, from Georgetown Law. She has been a member of the Engineering Advisory Council for Swarthmore College since 2013, was appointed to the Metropolitan Washington Council of Governments’ Climate, Energy and Environment Policy Committee in 2014, and in 2017 was sworn in as a Commissioner on the District of Columbia’s new Commission on Climate Change and Resiliency. In 2016, she received the Clean Energy Education and Empowerment (C3E) Law and Finance Award, given by the Department of Energy in collaboration with the MIT Energy Initiative and the Stanford Precourt Institute for Energy.


Jessica Grannis

Jessica Grannis

Jessica Grannis is the Adaptation Program Manager for the Georgetown Climate Center and is a staff attorney and adjunct professor at the Harrison Institute for Public Law, at Georgetown University Law Center.  Ms. Grannis oversees staff and student research and analysis of federal, state and local adaptation efforts. Her recent publications include an Adaptation Tool Kit for Sea Level Rise (2012) and a book chapter on Coastal Retreat in the Law of Climate Change: U.S. and International Aspects (2012, with Peter Byrne). Prior to joining the Harrison Institute, she was staff counsel for the California State Coastal Conservancy and the Ocean Protection Council.  She holds a B.A. in history from the University of Chicago; a J.D., Cum Laude, from University of California Hastings College of the Law; and a L.L.M, with honors, from Georgetown Law.


James Bradbury

James Bradbury

James Bradbury is the Mitigation Program Director for the Georgetown Climate Center. He works closely with Deputy Director Kate Zyla to oversee the Climate Center’s work on reducing emissions from all sectors. This includes the Climate Center’s work on the power sector, supporting state leadership and also coordinated engagement with the federal government through facilitation, convening, and analysis. James also manages the Transportation and Climate Initiative, a collaboration among 11 northeast and mid-Atlantic states and the District of Columbia to reduce emissions from the transportation sector.

James has over 12 years of experience working with a broad range of stakeholders to help advance climate and clean energy policies at the federal and state levels. Prior to joining the Climate Center, he served as a Senior Policy Advisor for Climate, Environment and Efficiency in the U.S. Department of Energy’s Office of Energy Policy and Systems Analysis. Previously, James worked as a Senior Associate in the Climate and Energy Program at the World Resources Institute and as a Senior Legislative Assistant in the U.S. House of Representatives.

James holds a PhD in Geosciences from the University of Massachusetts at Amherst, a MS in Hydrology from the University of New Hampshire and a BA in Geology from Colorado College.


Annie Bennett

Annie Bennett

Annie Bennett, an Institute Associate at the Georgetown Climate Center, provides legal and policy analysis on adaptation projects. Her work has focused on state and local adaptation policy, adaptation and resilience in the transportation sector, and cross-jurisdictional governance issues.

Annie received her J.D. from Georgetown Law in 2013.  During law school, she participated in the Harrison Institute for Public Law's policy clinic, working on legal and policy questions related to urban heat adaptation. She also interned at the U.S. Department of Justice in the Environment and Natural Resources Division, working on Fifth Amendment takings cases. Annie holds a B.A. in Chemistry and Neuroscience from Dartmouth College.


Matthew Goetz

Matthew Goetz

Matthew Goetz is the Electric Vehicle Program Manager at the Georgetown Climate Center. He coordinates the Climate Center’s electric vehicle policy research and facilitates the Transportation and Climate Initiative clean vehicles workgroup. Matthew conducts legal and regulatory analysis with a focus on state and federal policies to support electric vehicles, the intersection of electric vehicles and automated vehicle technology, and electric utility regulation.

Prior to joining the Climate Center, Matthew worked at the AES Corporation, an energy generation and distribution company, and completed legal internships at the U.S. EPA Office of Enforcement and U.S. EPA Office of Water. Matthew earned a J.D. from Georgetown University Law Center and a B.A. in political science from Wake Forest University.


Melissa Deas

Melissa Deas

Melissa Deas, an Institute Associate at the Georgetown Climate Center, provides policy analysis on adaptation projects. Her work focuses on centering equity in adaptation strategies, facilitating the implementation of adaptation and resilience goals, fostering better networks and linkages to ensure climate progress, and managing the Center's online adaptation tools. 

Melissa is a graduate of MIT, where she earned a Master’s in City Planning. During graduate school, she was the Lawrence Susskind Fellow at the Consensus Building Institute, served as the Lead on Cal-Adapt Outreach and Stakeholder Engagement for the California Energy Commission, and interned with the City of Boston’s Department of Environmental and Energy Services assisting with their Climate Action Plan. Prior to joining the Climate Center, Melissa worked with the Union of Concerned Scientists as a Climate Preparedness Research Associate. Melissa holds a B.A. in Sociology from Harvard College, summa cum laude.


Sarah Duffy

Sarah Duffy

Sarah Duffy, an institute associate at the Georgetown Climate Center, provides legal and policy analysis on issues related to the power sector and state leadership. Her work includes facilitating state involvement in federal energy and climate policy, advancing state regulation of power sector emissions and grid modernization, and state networks and international engagement.

Sarah was a contributing editor on the Law Review at the University of Michigan where she completed her undergraduate (B.A.) and legal (J.D.) education. After law school, she spent two years at the UCLA Emmett Institute on Climate Change and the Environment as a law fellow, working on topics such as utility regulation, methane emissions, and state climate legislation. 


Drew Veysey

Drew Veysey

Drew Veysey, an Institute Associate at the Georgetown Climate Center, conducts quantitative and policy analysis on transportation issues and supports facilitation of the Transportation and Climate Initiative.  His work focuses on market-based policies, investment strategies, and renewable fuels to mitigate greenhouse gas emissions from the transportation sector.

Drew is a graduate of the Yale School of Forestry and Environmental studies, where he earned a Master of Environmental Management degree specialized in energy systems analysis and industrial ecology.  Previously, Drew worked for Futurepast: Inc. where he audited greenhouse gas inventories and was co-author on Airport Cooperative Research Program Report 165: “Tracking Alternative Jet Fuel.” He also holds a B.A. in Environmental Studies and Political Science from American University where he was a 2008 Udall Scholar.


Anthony Mapp

Anthony Mapp

Anthony C. Mapp is the Assistant Director of Grants and Contracts Administration for the Georgetown Climate Center. In this role, he is primarily responsible for providing financial management to the Center. Anthony has more than a decade of experience working in higher education. Prior to joining Georgetown University, Anthony served in a variety of financial and HR roles at the University of Pennsylvania and Bryn Mawr College. He earned a bachelor’s degree in Management from Temple University.


Tanya Abrahamian

Tanya Abrahamian is a law fellow at the Georgetown Climate Center where she works on researching electric vehicle procurement by state and local fleets, among other topics. She previously worked in the federal affairs department of an energy company where she worked to advance carbon capture legislation. She has written and published papers in topics in energy/environment and land use including a paper on liquefied natural gas exports and eminent domain. She graduated cum laude and with departmental honors with a bachelor's degree in Business Economics from UCLA and has a J.D. from Georgetown Law.


Pete Rafle

Pete Rafle

Pete Rafle is Communications Director for the Georgetown Climate Center. Pete came to the Climate Center from Spitfire Strategies, where he provided communications and campaign planning counsel to the nation’s leading non-profits and foundations on issues ranging from climate change and agricultural policy to health care and criminal justice reform. He served as Communications Director for the Environment and Public Works Committee from 2007 to 2011, providing strategic counsel to Senator Barbara Boxer during her first two Congresses as Chairman of the Committee. In addition to acting as primary media strategist for the Committee’s legislative docket – including comprehensive climate change legislation, clean air and water bills, and transportation policy – he worked extensively with the Senator’s in-state staff on California environmental and infrastructure issues. Prior to his Senate service, he was Director of Advocacy Communications at The Wilderness Society and Communications Director for Trout Unlimited, where he also served as editor and publisher of Trout Magazine. Pete earned his B.A. in English at Yale.