Congratulations to Jessica Urwin, recipient of the American Society for Environmental History’s 2024 Rachel Carson Prize for best dissertation in environmental history. Jess’s dissertation, entitled ‘Chain Reactions: Nuclear Colonialism in South Australia’ (ANU), examined the relationship between Australia’s nuclear order and colonialism across the twentieth century. The judges celebrated the ‘admirable clarity’ of the work, which ‘charts the progression of Aboriginal nuclear survivors from individuals erased, dispossessed, displaced, and silenced by the state to active citizens exercising agency, working for recognition and compensation through a growing transnational Indigenous movement.’ Congratulations, Jess!