Arctic speleothems reveal nearly permafrost-free Northern Hemisphere in the late Miocene - Vaks, A; Mason, A; Breitenbach, SFM; Giesche, A; Osinzev, A; Adrian, I; Kononov, A; Umbo, S; Lechleitner, FA; Rosensaft, M; Henderson, GM (Nature Communications, 2025)