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Accessing Earth’s Core

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All of our civilization exists only a thin layer of Earth’s surface, and our deepest mines barely scratch our planet. We often talk about finding new mineral resources on other worlds or asteroids in the future, but are we ignore a treasure beneath our feet, and what other technologies and engineering might we utilize in Earth’s depths?

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Episode’s Narration-only version: https://soundcloud.com/isaac-arthur-148927746/accessing-eart…ation-only.

Credits:
Accessing Earth’s Core.
Episode 216, Season 5 E50

Written by:

Living Planets: The Gaia Hypothesis

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Many have believed Earth might have a spirit, but Lovelock’s Gaia Hypothesis contemplates this as a scientific possibility. Could our world be alive itself?

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Episode’s Narration-only version: https://soundcloud.com/isaac-arthur-148927746/living-planets…ation-only.

Credits:
Living Planets: The Gaia Hypothesis — Is Earth Alive?
Science & Futurism with Isaac Arthur.
Episode 369, November 17, 2022
Written, Produced & Narrated by Isaac Arthur.

Editors:
Lukas Konecny.

Cover Art:

Meteorite that landed in Cotswolds may solve mystery of Earth’s water

Water covers three-quarters of the Earth’s surface and was crucial for the emergence of life, but its origins have remained a subject of active debate among scientists.

Now, a 4.6bn-year-old rock that crashed on to a driveway in Gloucestershire last year has provided some of the most compelling evidence to date that water arrived on Earth from asteroids in the outer solar system.

Probing the Limits of Nuclear Existence

Researchers have discovered the heaviest-known bound isotope of sodium and characterized other neutron-rich isotopes, offering important benchmarks for refining nuclear models.

The neutron dripline marks a boundary of nuclear existence—indicating isotopes of a given element with a maximum number of neutrons. Adding a neutron to a dripline isotope will cause the isotope to become unbound and release one or more of its neutrons. Mapping the dripline is a major goal of modern nuclear physics, as this boundary is a testing ground for nuclear models and has implications for our understanding of neutron stars and of the synthesis of elements in stellar explosions. Now studies by two groups extend our knowledge of the properties of nuclei close to the dripline [1, 2]. Working at the Radioactive Isotope Beam Factory (RIBF) in Japan, Deuk Soon Ahn of RIKEN and colleagues have discovered sodium-39 (39 Na), which likely marks the dripline location for the heaviest element to date (Fig. 1) [1].

Are there Undiscovered Elements Beyond The Periodic Table?

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Adamantium, bolognium, dilithium. Element Zero, Kryptonite. Mythril, Netherite, Orichalcum, Unobtanium. We love the idea of fictional elements with miraculous properties that science has yet to discover. But is it really possible that new elements exist beyond the periodic table?

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Civilizations at the End of Time: Dying Earth

A trip deep into the far future, to the End of Earth.
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For most of human history, the end of Earth, the Universe, and Time itself were all identical, now we know the world will end in 4 billion years, long before the Universe begins to wind down. Today we will ask how we can extend that, and keep Earth around for far longer.

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Cover Art by Jakub Grygier: https://www.artstation.com/artist/jakub_grygier.

Script Editing.
Edward Nardella.
Keith Blockus.
Mark Warburton.
Matthew Acker.
MolbOrg.
N Kern.
Sigmund Kopperud (Wicked Woxel)

Graphics Team:
Edward Nardella.
Jeremy Jozwik.
Jarred Eagley.
Justin Dixon.
Jeremy Jozwik.
Katie Byrne.
Kris Holland of Mafic Stufios: www.maficstudios.com.
Luuk Warringa.
Mihail Yordanov.
Murat Mamkegh.
Nick Talmers Nieuwoudt.
Pierre Demet.
Sergio Botero: https://www.artstation.com/sboterod?fref=gc.
Stefan Blandin.

Music Supervisor.
Luca De Rosa.

Music: