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Ancient relic points to a turning point in Earth's history 42,000 years ago
The temporary breakdown of Earth's magnetic field 42,000 years ago sparked major climate shifts that led to global environmental change and mass extinctions, a new international study co-led by UNSW Sydney and the South Australian Museum shows.
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Douglass Adams was right..And yes,I read his books.
This is the second article about the earths magnetic fields I've read today. Is the universe speaking to me?