60-second Science
Earth's Magnetic Field Initiated a Pole Flip Many Millennia before the Switch
- Autor: Vários
- Narrador: Vários
- Editora: Podcast
- Duração: 0:02:47
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Sinopse
Lava flow records and sedimentary and Antarctic ice core data show evidence of planetary magnetic field activity 20,000 years before the beginning of the last pole reversal.
