Something Strange Altered Earth's Magnetic Field 40 Million Years Ago - ScienceAlert
science 2026/02/20 14:02:14

Something Strange Altered Earth's Magnetic Field 40 Million Years Ago - ScienceAlert

Source:ScienceAlert
Author:David Nield

Researchers have identified a period of sluggish magnetic field flipping for planet Earth, some 40 million years ago – raising big questions about how long these reversals actually take, and how we might be affected by the next one.