https://www.profitableratecpm.com/f4ffsdxe?key=39b1ebce72f3758345b2155c98e6709c
Proceedings of the National Academy of Sciences, Volume 122, Issue 36, September 2025. <br/>SignificanceMajor changes in atmospheric O2occurred ~2.4 to 2.0 billion years ago, in part inferred from the distributions of redox-sensitive trace elements in Earth’s surface rocks. Using the long-lived U-Th-Pb decay systems, we demonstrate extensive U4+…
