Rosie Semlyen is a research and policy associate at the Center for Earth Ethics, where she contributes to policy notes, public-facing writing, and collaborative publications, and supports the organization’s convenings, trainings, and events in the U.S. and internationally. Her current research interests include AI ethics, climate and biodiversity governance, and the role of values, culture and spirituality in shaping just transitions away from fossil fuels. 

Rosie holds a Master of Arts in climate and society from the Columbia University Climate School and a B.A. in anthropology and geography from Durham University. She previously worked with the United Nations Office for Disaster Risk Reduction and has lived, studied and worked in France, Canada and the United States.

Originally from York, United Kingdom, she has spent the past eight years engaged in environmental research and advocacy focused on fossil fuel phase-out, climate governance, and community-led approaches to environmental justice.

Rosie is committed to fostering strong, resilient communities and is guided by a belief in prefigurative politics—that our actions today should reflect the world we seek to create. She feels a deep connection to the Earth and finds joy in hiking, swimming and surfing.