Summary:
- Researchers have discovered an unexpected anomaly in the Pacific Ocean, which could serve as a global time marker for future geological studies.
- The anomaly is a sudden increase in the concentration of radioactive isotopes, likely caused by the detonation of nuclear weapons during the mid-20th century.
- This radioactive signature could be used to identify a distinct geological layer, known as the "bomb horizon," which could help scientists study environmental changes and human impact on the planet.