Earth's magnetic field strength correlates with oxygen levels

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 crucial planetary factors. The study found that both the geomagnetic field and oxygen levels increased in tandem, particularly between 330 and 220 million years ago. Researchers are unsure if one directly influences the other, or if an unknown factor drives both. This discovery could help refine understanding of habitable conditions on other planets. Scientists are now investigating potential underlying processes, including the role of plate tectonics and the formation of supercontinents like Pangaea.