Elena Aronova is an Assistant Professor at the History Department of the University of California at Santa Barbara, USA. She is completing her book, which examines the ways in which ideas about science have become a sphere of Cold War competition, on both sides of the “iron curtain.” Her current project, Doing Things with Data, examines the politics of environmental data collection, archiving, and exchange during the Cold War. Simone Turchetti is Lecturer at the Centre for the History of Science, Technology and Medicine at the University of Manchester, UK. His research focuses on the interplay between scientists, intelligence officers and diplomats during the Cold War period. He is the author of The Pontecorvo Affair: A Cold War Defection and Nuclear Physics (2012), and more recently he has co-edited The Surveillance Imperative. Geosciences during the Cold War and Beyond.