This award supports convening the 2025 West Antarctic Ice Sheet (WAIS) Workshop in Coupeville, WA, enabling multidisciplinary scientific exchange on marine ice-sheet science at a time of increased focus on the impacts of Antarctic change and Antarctic international governance. At the 2025 Workshop, organizers will: (1) convene sessions on innovative WAIS scientific research with extended time for discussion and audience interaction to identify future research targets and logistical needs; (2) hold an open discussion with all participants on strategies for achieving strong US scientific leadership and presence in Antarctica; (3) livestream and archive recordings of the scientific program so that it is available to all stakeholders and trainees; and (4) continue to provide workforce development opportunities through post-agenda half-day mini-workshops. The fate of marine-based ice sheet sectors in Antarctica, in particular WAIS, and their interaction with other Earth systems has had a central role in nearly every major report about the impacts of global Earth-system change for the past decade. An ice sheet of such fundamental global importance and active research requires a dedicated, annual workshop that focuses and organizes the scientific community studying WAIS, its role in the Earth system, and its impact on the US population. The WAIS Workshop has been held annually to provide the key venue to foster scientific exchange across the wide, multidisciplinary intellectual