April 11, 2022

Decompressing Earth vs. Plate Tectonics - Dr. Marvin Herndon, Geochemist

2 hours 31 minutes

What if plate tectonics isn't settled science? Consensus suggests Earth's crust has been going through relatively constant supercontinent cycles for as long as there has been a solid crust. There are all kinds of measurements and experiments that seem to confirm this observation - but there are whose who insist that the ancient history of the Earth is not what it seems. Rather than being formed as a molten ball of naked space goo, condensed from the sun's protoplanetary disk, it's possible that the Earth formed hot and gassy - like Jupiter, or the sizzling gas giants that Kepler is regularly finding in close solar orbits.

If that's possible - and our recent conversation with NASA's Don Pettit suggests there is a solid line of evidence here - how does that change our understanding of the Earth? Enter Dr. J. Marvin Herndon, who proposes the history of our planet is a history of decompression. In this episode of the DemystifySci podcast, he takes us through his theory and, along the way, explains everything from the composition of the inner core, to the generation of the magnetic field, to the reason that the surface of the Earth looks the way it does.

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PODCAST INFO: Anastasia completed her PhD studying microbial communication at Columbia University. When not talking to brilliant people or making movies, she spends her time painting and exploring the woods. Michael Shilo also did his PhD at Columbia studying the elastic properties of molecular water. When he's not in the film studio, he's exploring sound in music. They are both freelance professors at various universities.

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