Our executive team

Our proven leaders have a huge role in helping us achieve our strategic vision

Fred Krupp photo

Fred Krupp


Widely recognized as the foremost champion of harnessing market forces for environmental ends, Fred is co-author of Earth: The Sequel—The Race to Reinvent Energy and Stop Global Warming.

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Management team

  • Liza Henshaw photo

    Liza Henshaw

    Chief Operating Officer

    Liza is responsible for the day-to-day operations of the entire organization. She has a keen focus on Human Capital and direct responsibility for technology, administration, finance and human resources.

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  • Paula Hayes photo

    Paula Hayes

    Senior VP Global Strategic Initiatives

    Paula seeks to increase EDF’s global work and transformational change, charting a path forward in China and other locales. She previously led EDF’s fundraising efforts and oversaw an annual budget increase from $3M to over $100M.

  • Eric Pooley photo

    Eric Pooley

    Senior VP Strategy and Communications

    Eric works with program staff to develop and implement strategies to achieve our environmental advocacy goals. Author of The Climate War, Eric has served as managing editor of Fortune and national editor, chief political correspondent, and White House correspondent for Time.

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  • Linda Nelson photo

    Linda Nelson

    Senior VP Development

    Linda leads EDF’s fundraising efforts. Her experience includes three decades of development leadership at Yale and Columbia University and high-level consulting for clients such as Barnard College, Brown University, and Rutgers University.

  • Cynthia Hallenbeck photo

    Cynthia Hallenbeck

    Chief Financial Officer

  • Brian Attas photo

    Brian Attas

    Chief Information Officer

    Brian draws from more than 25 years of IT service and technology leadership to oversee EDF's application development, technology and infrastructure.

  • Felipa Bernard photo

    Felipa Bernard

    VP Human Resources

    Flip has worked in human resources and employee development at Newsweek, American Express and Merrill Lynch.

  • Cynthia Hampton photo

    Cynthia Hampton

    VP Marketing and Communications

    Cynthia leads a group of professional marketers who create, develop and execute the marketing and membership efforts for the organization. She previously served as Managing Director of Global Marketing at the Citigroup Private Bank and as an Executive Vice President at Young and Rubicam.

  • Carol Kinzler photo

    Carol Kinzler

    Chief of Staff

    Carol facilitates and expedites the day-to-day operations and decision-making of the executive office in addition to executing special initiatives. Prior to joining EDF in 2001, Carol worked for the Yale School of Forestry and Environmental Studies.

Program leadership

  • Diane Regas photo

    Diane Regas

    Senior VP Programs

    Diane provides overall program vision, strategy and leadership. She previously led EDF’s oceans program as it transformed the U.S. fishing industry through catch shares management. Prior to that, Diane worked at EPA in some of the agency’s highest positions.

    More about Diane »

  • Gwen Ruta photo

    Gwen Ruta

    VP Programs

    Gwen ensures world-class execution of EDF’s strategies to protect human health and the environment. She previously led our Corporate Partnerships program, working with leading companies to develop innovative solutions to environmental challenges.

    More about Gwen »

  • David Festa photo

    David Festa

    VP West Coast, VP Land, Water and Wildlife

    As head of EDF’s West Coast and conservation activities, David creates significant improvements in conservation policies and the economic performance of businesses. Prior to EDF, David worked as a journalist, management consultant, and director of policy for the U.S. Department of Commerce.

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  • Dan Dudek photo

    Daniel J. Dudek, Ph.D.


    An economist, Dr. Dudek leads EDF’s office in China. He is widely credited with developing the cap-and-trade model that the U.S. adopted for sulfur dioxide in the early 1990s, which led to dramatic reductions in acid rain.

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  • Steven Hamburg photo

    Steven Hamburg, Ph.D.

    Chief Scientist

    Dr. Hamburg ensures the scientific integrity of EDF’s positions and programs. He was previously on the faculty of Brown University, where he founded and directed the Global Environment Program and taught environmental science and ecosystem ecology.

    More about Steve »

  • Nathaniel Keohane photo

    Nathaniel Keohane, Ph.D.

    VP International Climate

    Dr. Keohane leads our International Climate program. Previously, he served as Special Assistant to President Obama for Energy and Environment in the National Economic Council and Domestic Policy Council.

    More about Nat »

  • Amanda Leland photo

    Amanda Leland

    VP Oceans

    Amanda leads an international team of experts who implement practical solutions to recover ailing fisheries and oceans. Amanda’s prior experience includes research with commercial fishermen in Maine and work on ocean issues as a Congressional staffer.

    More about Amanda »

  • James Marston photo

    James D. Marston, J.D.

    VP US Climate & Energy

    Jim is the founding director of EDF’s Texas office, where he has served since its beginning in 1988. He is a leader of Pecan Street Inc., the Austin-based smart grid partnership, and, in 2007, won the fight to stop utility TXU from building coal plants in Texas.

    More about Jim »

  • Tom Murray photo

    Tom Murray

    VP Corporate Partnerships

    Tom spearheads EDF’s Corporate Partnerships program, working with multinational companies to accelerate environmental innovation. Prior to joining EDF, Tom held several positions at ICF International and Jellinek, Schwartz & Connolly.

    More about Tom »

  • Vickie Patton photo

    Vickie Patton, J.D.

    General Counsel

    Vickie directs our national and regional clean air programs. For two decades, she has championed and defended vital reductions in air pollution. She began her career in EPA’s Office of General Counsel.

    More about Vickie »

  • Frank Convery photo

    Frank Convery

    Chief Economist

    Frank joined EDF by way of academia, most recently as a senior fellow with University College Dublins Earth Institute.

  • Elizabeth Thompson photo

    Elizabeth Thompson

    Vice President, US Climate & Political Affairs and President, Environmental Defense Action Fund

    Elizabeth oversees the organization’s federal advocacy efforts, with a particular focus on climate change. She has an extensive policy and legislative background and, in her prior role as Legislative Director, was lead strategist for EDF on the U.S. Climate Action Partnership.