The authoritative guide to ensuring science and technology make life on Earth better, not worse.

Watch the 2025 Doomsday Clock announcement on January 28


Adriana Petryna

Adriana Petryna is Edmund J. and Louise W. Kahn Term Professor of Anthropology at the University of Pennsylvania. She is the author of Life Exposed: Biological Citizens after Chernobyl (Princeton University Press) and the co-author of Global Pharmaceuticals: Ethics, Markets, Practices (Duke University Press). Her recently published book, When Experiments Travel: Clinical Trials and the Global Search for Human Subjects (Princeton University Press), explores patient protection in the context of globalizing clinical research.