Our policy experts


  • Saunders, Nichole Senior Attorney

    Areas of expertise: Oil and gas policy, oil and gas wastewater

    Office: Austin, Texas

  • Schiller, Anna Water and Lands Project Manager, California Water Program

    Areas of expertise: Conservation biology, spatial analysis, groundwater management, land use planning

    Office: San Francisco

  • Schwartzman, Steve Senior Director, Tropical Forest Policy

    Areas of expertise: Climate change, tropical forest policy, Reducing Emissions from Deforestation and forest Degradation (REDD), Brazil and the Amazon, indigenous peoples, incentives for environmental protection

    Office: Washington, D.C.

  • Shirreffs , Dawn Florida Director

    Areas of expertise: Political affairs, partnerships, non-profit management, resilience

    Office: Remote

  • Silleck, Elizabeth Senior Manager, Oceans Climate Strategy

    Areas of expertise: Environmental Policy, Marine Conservation, Fisheries Management

    Office: Remote

  • Spiller, Beia Lead Senior Economist

    Areas of expertise: Electricity pricing, distributed energy resources, energy demand, transportation, air quality, shale gas

    Office: New York City

  • Stadler, Felice Associate Vice President, Political Affairs

    Areas of expertise: Climate change, methane policy, strategic partnerships

    Office: Washington, D.C.

  • Sterner, Thomas Senior Contributing Economist

    Areas of expertise: Selection and design of environmental policy instruments; economics in general; climate and energy; natural resource economics

    Office: New York City

  • Thomas, Johanna Senior Director, Oceans Climate Strategy

    Areas of expertise: Oceans programs, renewing fisheries, strategic planning

    Office: San Francisco

  • Tong, Clarence Legislative Affairs Manager

    Areas of expertise: Legislative process, Budget & Appropriations, U.S. energy policy

    Office: Washington, D.C.

  • Truax, Hawley Southeast Regional Director

    Areas of expertise: Policy analysis, writing/editing, institutional giving, strategy development, regional politics and culture

    Office: Raleigh, North Carolina

  • Uennatornwaranggoon, Fern Manager, Air Quality Policy

    Areas of expertise: Community advocacy, air pollution, goods movement, environmental policy, air quality regulation, partnerships

    Office: San Francisco

  • Vogel, Sarah Vice President, Health

    Areas of expertise: Environmental health, chemical safety, endocrine disruptors

    Office: Washington, D.C.

  • Warner, Mandy Director, Climate & Clean Air Policy

    Areas of expertise: Climate and air policy, power sector issues, pollution control technologies, regulatory policy, hazardous air pollutants, conventional pollutants, Congress.

    Office: Washington, D.C.

  • Westfall, Katie Director, Oceans Climate Strategies

    Areas of expertise: Fisheries science and management, coastal and marine policy, community organizing and advocacy

    Office: Washington, D.C.

  • Whittle, Daniel Senior Director, Caribbean

    Areas of expertise: US environmental law and policy, Cuban marine and coastal resources law and policy , energy policy, rights-based fisheries management, marine protected areas, international government US environmental law and policy, Cuban marine and coastal resources law and policy , energy policy, rights-based fisheries management, marine protected areas, international government US environmental law and policy, Cuban marine and coastal resources law and policy, energy policy, rights-based fisheries management, marine protected areas, international government relations

    Office: Raleigh, North Carolina

  • Winn, Rosalie Senior Attorney, U.S. Clean Air

    Areas of expertise: Federal environmental and energy regulation, the Clean Air Act, emissions standards for the oil and gas sector

    Office: Boulder, Colorado

  • Wolfe, David Director, Conservation Strategies

    Areas of expertise: conservation biology, conservation of at-risk species, working effectively with private landowners, Safe Harbor, Farm Bill

    Office: Austin, Texas

  • Yawanarajah, Ph.D, Shareen Senior Policy Manager, Global Energy

    Areas of expertise: International energy policy, international methane policy, oil and gas industry operations, research and development

    Office: Austin, Texas

  • Zakaria, Rama Senior Manager, Regulatory Policy & Analysis

    Areas of expertise: Federal energy and environmental regulation, wholesale power markets, carbon pollution from the power sector

    Office: Washington, D.C.