Earth’s Magnetic Field Flips Regularly — Some Reversals Last 70,000 Years Learn how some of Earth’s magnetic field flips last longer than others, weakening our defenses against cosmic radiation.

Earth’s Magnetic Field Flips Regularly — Some Reversals Last 70,000 Years #Science #EarthSciences #Geology #EarthsMagneticField #GeologicalReversals #Paleomagnetism

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