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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.
Sr. Communication Strategist and Sr. Analyst, Food & Environment Program
Karen Perry Stillerman is senior communication 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.
Climate Preparedness Specialist, Climate & Energy
Shana Udvardy is the climate preparedness specialist with the Climate & Energy program at the Union of Concerned Scientists. She conducts research and policy analysis to help inform and build...
Senior Energy Analyst
As a senior energy analyst in the UCS Climate and Energy Program, Laura Wisland focuses on developing state policies that will effectively increase the amount of renewable energy used in California.
Senior Analyst, Global Security Program
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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