Our Washington, D.C. office

Our legislative team, including our national climate team, plus many staff scientists and our national communications team.

555 12th St., N.W., Suite 400
Washington, DC 20004

Phone: (202) 387-3500
Fax: (202) 234-6049

Media contact
Sharyn Stein
(202) 572-3396 (office)
(202) 905-5718 (cell)
Email Sharyn

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Staff experts in the Washington, D.C. office

  • Ocko, Ilissa Senior Climate Scientist II, Barbra Streisand Chair of Environmental Studies

    Areas of expertise: Near-term climate change, short-lived climate pollutants (methane, hydrogen, aerosols), climate modeling, climate metrics, net zero

  • Oldfield, Emily Agricultural Soil Carbon Scientist

    Areas of expertise: Soil organic matter, carbon sequestration, natural climate solutions

  • Olumoroti, Akin Senior Analyst, Federal Climate Innovation

    Areas of expertise: Renewable energy, carbon management, energy efficiency technologies, U.S., and international energy policy

  • Orleans, Raisa Director, Government Relations

    Areas of expertise: U.S. Congress, U.S. climate policy, methane policy

  • Osborn, Sophie Senior Legislative Analyst

    Areas of expertise: US Congress, climate policy and methane policy

  • Osifeso, Nyasha (Nya) Manager, Federal Affairs

    Areas of expertise: Agriculture policy and water policy

  • Pereira, Andrea Manager, Corporate Climate Leadership

    Areas of expertise: Policy advocacy, partnerships, corporate sustainability and social responsibility

  • Pratt, Jack Senior Political Director, Political Affairs

    Areas of expertise:

  • Rambharos, Mandy Vice President, Global Climate Cooperation

    Areas of expertise: Energy industry, just transition, carbon markets, and global climate negotiations.

  • Rote, Morgan Director, U.S. Climate

    Areas of expertise: U.S. climate policy, carbon markets, renewable energy, climate adaptation, economic analysis, behavioral economics