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Senior Energy Modeler
Sandra Sattler is a senior energy modeler in the UCS Climate and Energy Program, where she analyzes and models clean energy, energy efficiency, and global warming policies at the state, regional, and national level.
Senior Analyst, Climate & Energy Program
Erika Spanger-Siegfried, a senior analyst in the Climate and Energy program at the Union of Concerned Scientists, researches, writes and speaks about U.S. climate change impacts and preparedness.
Energy Analyst
Mark Specht is an energy analyst for the Climate...
Karen Perry Stillerman
Sr. Strategist and Sr. Analyst, Food & Environment Program
Karen Perry Stillerman is senior strategist and senior analyst in the UCS Food and Environment Program, where she leads initiatives and shapes research aimed at transforming and modernizing the American food system to make it healthier for consumers and the environment.
Fellow (Solar Geoengineering Research, Governance and Public Engagement)
Shuchi Talati is a UCS Fellow on solar geoengineering research governance and public engagement with the Climate & Energy program at the Union of Concerned Scientists.
Climate Resilience Analyst
Shana Udvardy is climate resilience analyst with the Climate & Energy program at the Union of Concerned Scientists.
Co-Director, Global Security Program
David Wright, co-director of the UCS Global Security Program, is an established expert on the technical aspects of arms control, particularly those related to missile defense systems, missile proliferation, and space weapons.
Senior Washington Representative
Stephen Young is an expert on a wide range of arms control and international security issues, including U.S. nuclear weapons policy, arms control, and missile defense.

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