Our science experts


  • Neltner, Tom Chemicals Policy Director

    Areas of expertise: Food additives, lead, cadmium, formaldehyde, and hazardous materials management

    Office: Washington, D.C.

  • O'Brien, Sarah Senior Manager, Pacific Tuna Initiative

    Areas of expertise: Fisheries monitoring and data collection; electronic monitoring, Fisheries policy and management, Pacific tuna, Sea turtle biology and conservation, Coral reef ecology

    Office: San Francisco

  • Ocko, Ilissa Senior Climate Scientist

    Areas of expertise: Climate science, greenhouse gases, aerosols, methane, black carbon, climate modeling, metrics

    Office: Washington, D.C.

  • Omara, Mark Senior Analyst, Research & Analytics

    Areas of expertise: International oil and gas, methane emissions science

    Office: Austin, Texas

  • Ortiz, Rafael Senior Manager, Gulf of California Fisheries

    Areas of expertise: Fisheries, Ocean Conservation, Stakeholder Engagement, Research and Analysis, Ecophysiology

    Office: La Paz, Mexico

  • Padilla, Lauren VoLo Data Scientist

    Areas of expertise:

    Office: Remote

  • Peyronnin Snider, Natalie Senior Director, Coastal Resilience

    Areas of expertise: Ecosystems, large-scale restoration and protection planning, science communication, natural resources management and policy, science-based decision making, ecosystem services, natural infrastructure, rivers and deltas.

    Office: Washington, D.C.

  • Poon, Sarah Director, Design & Capacity Development

    Areas of expertise: Fisheries management, training and capacity development

    Office: San Francisco

  • Rader, Douglas N. Chief Oceans Scientist

    Areas of expertise: Oceans Program, renewing fisheries, marine protected areas, coral reef ecosystems, climate impacts on oceans

    Office: Raleigh, North Carolina

  • Rife, Alexis Senior Manager, Engagement and Design

    Areas of expertise: Fisheries management, rights-based management, fisheries policy and governance, marine protected areas, small-scale fisheries

    Office: Remote

  • Romero-Canyas, Rainer Lead Senior Social Scientist

    Areas of expertise: Social psychology of sustainability; climate change communication; behavioral interventions; experimental design

    Office: New York City

  • Roy, Ananya Health Scientist

    Areas of expertise: Air quality, lead, cardiovascular disease, neurodevelopment

    Office: Washington, D.C.

  • RS, Abhijit Data Architect

    Areas of expertise: Data architecture, data management, cloud computing, air quality, IOT, sensors

    Office: San Francisco

  • Rudek, Joe Lead Senior Scientist

    Areas of expertise: Agricultural emissions to land, water, and air from livestock, rice and upland crops; methane emissions from natural gas end use; and supply chain sustainability

    Office: Remote

  • 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

  • Schwietzke, Stefan International Scientist

    Areas of expertise: Methane emissions, atmospheric measurements, local and global emissions inventories

    Office: Europe

  • Shelton, Shelby Project Manager, Sustainable Sourcing Initiative

    Areas of expertise: Soil science, nutrient management, sustainable agriculture, agricultural supply chain solutions, conservation, and resilience

    Office: Raleigh, North Carolina

  • Silleck, Elizabeth Senior Conservation Manager, Gulf of Mexico Oceans Program

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

    Office: Remote

  • Sun, Tianyi Postdoc Climate Science Fellow

    Areas of expertise: Climate variability and change, climate modeling, ocean-atmosphere interactions, El Niño-Southern Oscillation

    Office: Austin, Texas

  • Thompson, Tammy Senior Air Quality Scientist

    Areas of expertise: Atmospheric chemistry and physics, air quality modeling, meteorological modeling, emissions, climate/air quality interactions

    Office: Boulder, Colorado