This book examines how government and scientific interventions have recast the Chernobyl aftermath as a complex political and health experience with its own bureaucratic and legal ramifications. In Ukraine, a decade after the Chernobyl disaster, waves of citizens poured into medical offices for care and compensation. Their “idiosyncratic” diseases would now encode different kinds of treatment discriminations and different kinds of neglect. The book shows how the Chernobyl explosion has been shaped as a tekhnohenna katastrofa, or technogenic catastrophe, and how Ukraine's response to the disaster combines humanism with strategies of governance and state building, market strategies with forms of economic and political corruption. The book focuses on the emergence of a collective and individual survival strategy known as biological citizenship, which it argues reflects a failure of politics and science to account for human welfare, particularly the welfare of Chernobyl sufferers.