Don’t flip out: Earth’s magnetic poles aren’t about to switch

Weakening magnetic field is a return to normal, not a sign of doom

illustration of Earth's magnetic field

MAGNETIC SHIELD  The planet’s magnetic field isn’t on the cusp of a catastrophic flip of the magnetic poles, new lava analysis suggest. A magnetic reversal would weaken Earth’s magnetic field, causing auroras closer to the equator, as seen in this artist’s illustration. 

Huapei Wang/MIT

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