Breathing life into the boring billion: Direct constraints from 1.4 Ga fluid inclusions reveal a fair climate and oxygenated atmosphere

Proceedings of the National Academy of Sciences, Volume 122, Number 52, December 2025.
SignificanceThe Mesoproterozoic eon, often considered mundane and static, lays the foundation for dramatic transformations in Earth’s physical and biological evolution during the subsequent Neoproterozoic. A distinct absence of glaciation suggests a…