Earth's magnetic field and oxygen levels correlate strongly

Scientists have discovered a strong correlation between Earth's magnetic field strength and atmospheric oxygen levels over the past 540 million years. The research suggests a previously unknown link between these two critical planetary factors. The study found that both the geomagnetic field and oxygen levels increased in parallel, particularly during the Cambrian period and a later spike tied to the supercontinent Pangaea. However, the exact nature of the relationship, whether one influences the other, remains unclear. Researchers suggest the magnetic field may protect the atmosphere, or plate tectonics could play a role. Further investigation is needed to determine the underlying mechanisms and implications for understanding life on other planets.