Astrid Caldas

Senior Climate Scientist

Media Contact

Astrid Caldas is a senior climate scientist with the Climate & Energy program at the Union of Concerned Scientists. Her research focuses on climate change adaptation with practical policy implications for ecosystems, the economy, and society. She also works on policy related to climate change, natural resources management, conservation planning, socio-environmental synthesis, and climate communication.

Before joining UCS, Dr. Caldas was a Science & 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.

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

She blogs for The Huffington Post and has been quoted widely, including in The Wall Street Journal, The Washington Post, Huffington Post, Christian Science Monitor, Daily Press, Time Science, and Mashable, and has appeared on numerous NPR stations, TRT World, CBS, NBC, Fox, Univisión, and Telemundo.

Selected publications

Phillips, C.A., Astrid Caldas, Rachel Cleetus, Kristina A. Dahl, Juan Declet-Barreto, Rachel Licker, L. Delta Merner, J. Pablo Ortiz-Partida, Alexandra L. Phelan, Erika Spanger-Siegfried, Shuchi Talati, Christopher H. Trisos, and  Colin J. Carlson. 2020. Compound climate risks in the COVID-19 pandemic. Nature Climate Change.

Dahl, K., Spanger-Siegfried, E., Caldas, A., Udvardy, S. 2017. Effective inundation of continental United States communities with 21st century sea level rise (submitted). Elem Sci Anth 5:37

Caldas, A. 2014. Species traits of relevance for climate vulnerability and the prediction of phenological responses to climate change. Journal of the Lepidopterists’ Society 68(3):197-202

Schubert, D.J, A. Caldas; C. Wold; P. Todd and Z. Smith. 2012. CITES and Climate Change: A Need for Integration. Presented to the CITES Animals and Plants Committees in Geneva, Switzerland

Dubois, N., A. Caldas, J. Boshoven, and A. Delach. 2011. Integrating Climate Change Vulnerability Assessments into Adaptation Planning: A Case Study Using the NatureServe Climate Change Vulnerability Index to Inform Conservation Planning for Species in Florida [Final Report]. Defenders of Wildlife