Nature CommunicationsNorth American ice sheet persistence into past interglacials should inform future projectionsRoger C. CreelRobert E. KoppAndrea DuttonYuxin ZhouMaureen E. RaymoCatherine J. BrittRobert M. DeConto2026-03-06Full textDOI https://doi.org/10.1038/s41467-026-70032-y