https://www.cnn.com/2023/12/27/world/ancient-bricks-magnetic-field-anomaly-scn/index.html
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Ancient bricks reveal new clues about a massive anomaly in Earth’s magnetic field - CNN
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12/27/23 at 12:13pm
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CNN
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Science Earth CNN
Incredibly old human-made rocks have exposed an important event in Earth’s magnetic history.
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