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Dr. Astrid Caldas

AFFILIATION: Union of Concerned Scientists

TITLE: Sr. Climate Scientist for Community Resilience

LOCATION: Washington D.C.

LANGUAGE: English, Spanish, Portuguese

EXPERTISE AREA: Climate Change, Environmental Justice


Astrid Caldas is a senior climate scientist for community resilience with the climate and energy program at the Union of Concerned Scientists. Her work focuses on community resilience, science communication, environmental justice, and equitable climate-related policies with practical implications for nature and society.

Before joining UCS, Dr. Caldas was a Science and Technology Policy Fellow at the American Association for the Advancement of Science, a climate change and wildlife science fellow at the nonprofit conservation group Defenders of Wildlife, and a research scientist at the University of Maryland. Dr. Caldas has advised or consulted on projects with organizations including the Smithsonian Institution and the National Socio-Environmental Synthesis Center. She has a lifelong passion for butterflies and moths, which she has studied for many years and likes to use as models to raise awareness of climate and land use changes.

Dr. Caldas holds a Ph.D. in ecology from the Universidade Estadual de Campinas in the state of São Paulo, Brazil. In addition to an M.S. in entomology from the Universidade Federal do Paraná, Brazil, she earned an M.S. in environmental management from the University of Maryland Global Campus.

She has brought word of the science behind climate change impacts to town halls, community centers, student panels, retirement homes, faith communities, grassroots groups, rallies, and anything in between. She has been quoted widely, including in The New York Times, People Magazine, The Wall Street Journal, The Washington Post, USA Today, Huffington Post, Christian Science Monitor, Daily Press, Time Science, CNBC, Gizmodo, and Mashable, and has appeared on numerous NPR stations, TRT World, CBS, NBC, Fox, Univisión, and Telemundo. Her Twitter handle is @climategeek.


Contact Dr. Astrid Caldas at

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