How Likely is Earth's Magnetic Field Flip to Trigger Doomsday Scenario for Our Planet?

Earth’s magnetic field – vital to all life on our planet – protects the ozone layer from solar winds, cosmic rays, and harmful radiation. The field is most concentrated at the poles but sometimes they switch, with one such event, called the Laschamp excursion, occurring around 42,000 years ago and lasting around 1,000 years.

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