In a future of limitless resources, what challenges remain when scarcity fades but human desires endure? Join us as we explore the path to post-scarcity civilizations, where technology solves material needs—but purpose, meaning, and new challenges await.

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Credits:

Post-Scarcity Civilizations: Infinite Resources & Our Future

Episode 495; April 17, 2025

Written, Produced & Narrated by: Isaac Arthur

Edited by: Donagh Broderick

Graphics: Jeremy Jozwik, Ken York YD Visual

Select imagery/video supplied by Getty Images 

Music Courtesy of Epidemic Sound http://epidemicsound.com/creator

Markus Junnikkala, "A Fleet Behind the Moon"

Phase Shift, "Forest Night"

Kai Engel, "Endless Story About Sun and Moon"

Chris Zabriskie, "Unfoldment, Revealment",  "A New Day in a New Sector"

Taras Harkavyi, "Alpha and..."

Stellardrone, "Red Giant", "Billions and Billions"

Post-Scarcity Civilizations: Infinite Resources & Our Future (Narration Only)

Post-Scarcity Civilizations: Infinite Resources & Our Future

If aliens invaded, how would humanity respond? From planetary defense and space warfare to unexpected diplomatic twists, we’ll explore the strategies, technologies, and scenarios that could decide our fate.

Watch my exclusive video Post-Consciousness Civilizations: https://nebula.tv/videos/isaacarthur-postconsciousness-civilizations-evolving-beyond-human-awareness
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Credits:
We've Been Invaded By Aliens... Now What?
Episode 494a; April 13, 2025
Written, Produced & Narrated by: Isaac Arthur
Edited by: Ludwig Luska
Graphics: Jeremy Jozwik, Ken York YD Visual, Legiontech Studios
Select imagery/video supplied by Getty Images 
Music Courtesy of Epidemic Sound http://epidemicsound.com/creator
Sergey Cheremisinov, "Labyrinth"
Markus Junnikkala, "A Fleet Behind the Moon"
Phase Shift, "Forest Night"
Chris Zabriskie, "Unfoldment, Revealment",  "A New Day in a New Sector"
Stellardrone, "Red Giant"

We've Been Invaded By Aliens... Now What?

From genetically engineered warriors to armored giants storming enemy ships, we explore the science and fiction of space marines—super-soldiers built to conquer the stars. Join us as we examine real-world technologies and speculative enhancements that might one day bring these legendary troops to life.

Watch my exclusive video Post-Consciousness Civilizations: https://nebula.tv/videos/isaacarthur-postconsciousness-civilizations-evolving-beyond-human-awareness
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Credits:
Post-Scarcity Civilizations: Infinite Resources & Our Future
Episode 495a; April 20, 2025
Written, Produced & Narrated by: Isaac Arthur
Graphics: Jeremy Jozwik
Select imagery/video supplied by Getty Images 
Music Courtesy of Epidemic Sound http://epidemicsound.com/creator
Markus Junnikkala, "A Fleet Behind the Moon"
Phase Shift, "Forest Night"
Chris Zabriskie, "Unfoldment, Revealment",  "A New Day in a New Sector"Stellardrone, "Red Giant", "Billions and Billions"

Space Marines

Space Marines (Narration Only)

It can be hard to hear a signal 100 miles away—so what does it take to build a beacon loud enough to be heard 100,000 light years away? In this episode, we explore galactic beacons: powerful transmissions that may teach, warn, or outlast the minds that made them.

Watch my exclusive video The End of Science https://nebula.tv/videos/isaacarthur-the-end-of-science
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Credits:
Galactic Beacons
Episode 440b; April 1, 2024
Written, Produced & Narrated by: Isaac Arthur
Graphics: Darth Biomech, Jeremy Jozwik, Ken York YD Visual, Sergio Botero
Select imagery/video supplied by Getty Images 
Music Courtesy of Epidemic Sound http://epidemicsound.com/creator

Galactic Beacons: Teaching Tools or Tombstones? (Narration Only)

In tomorrow’s world, cities may rise into the clouds, dive beneath oceans, or float among the stars—join us as we journey through these radical urban frontiers.

Watch my exclusive video Antimatter Propulsion: Harnessing the Power of Annihilation - https://nebula.tv/videos/isaacarthur-antimatter-propulsion-harnessing-the-power-of-annihilation
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Credits:
Cities of the Future 
Episode 498; May 8, 2025
Written, Produced & Narrated by: Isaac Arthur
 Edited by: Briana Brownell & Thomas Owens
Graphics: Bryan Versteeg, Ervin Oprea, Ken York YD Visual, Sergio Botero
Select imagery/video supplied by Getty Images 
Music Courtesy of Epidemic Sound http://epidemicsound.com/creator
Chris Zabriskie, "Unfoldment, Revealment", "A New Day in a New Sector", "Wonder Cycle"
Taras Harkavyi, "Alpha and..."
Stellardrone, "Red Giant", "Billions and Billions"

498 V Cities of the Future May 8, 2025

Why wait centuries to terraform Mars when you could build a habitable world overnight? In this episode, we explore the concept of Worldhouses—planet-spanning domes that let us colonize hostile worlds by enclosing them beneath engineered skies, one dome at a time.

Watch my exclusive video Antimatter Propulsion: Harnessing the Power of Annihilation - https://nebula.tv/videos/isaacarthur-antimatter-propulsion-harnessing-the-power-of-annihilation
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Credits:
Worldhouses
Episode 499; May 15, 2025
Written, Produced & Narrated by: Isaac Arthur
Graphics: Fishy Tree & Ken York YD Visual
Select imagery/video supplied by Getty Images 
Music Courtesy of Epidemic Sound http://epidemicsound.com/creator
Chris Zabriskie, "Unfoldment, Revealment", "A New Day in a New Sector"
Taras Harkavyi, "Alpha and..."
Stellardrone, "Red Giant", "Billions and Billions"

Worldhouses & Paraterraforming (Narration Only)

In the year 2525, humans, post-humans, and new species navigate a vast and vibrant future. Join us as we explore the lives, dreams, and struggles of a trillion-strong civilization.

Watch my exclusive video Antimatter Propulsion: Harnessing the Power of Annihilation - nebula.tv/videos/isaacarthur-a…ower-of-annihilation
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Credits:
Life in 2525 A.D.
Episode 500; May 22, 2025
Written, Produced & Narrated by: Isaac Arthur
Editors: Merv Johnson II & Thomas Owens

Graphics:
Anthrofuturism
Jarred Eagley
Jeremy Jozwik
Ken York YD Visual
Space Resources CGI
Udo Schroeter

Select imagery/video supplied by Getty Images 
Music Courtesy of Epidemic Sound http://epidemicsound.com/creator
Chris Zabriskie, "Unfoldment, Revealment", "A New Day in a New Sector"
Taras Harkavyi, "Alpha and..."
Stellardrone, "Red Giant", "Billions and Billions"
Sergey Cheremisinov, "Labyrinth"

Life in 2525 A.D. (Episode 500 Narrated Only by Isaac)

From Clarke’s Sentinel to deep-space defense systems, this episode dives into the idea of machine monitors—guardians of planets, civilizations, and secrets too ancient to name.

Watch my exclusive video Antimatter Propulsion: Harnessing the Power of Annihilation - nebula.tv/videos/isaacarthur-a…ower-of-annihilation
Get Nebula using my link for 40% off an annual subscription: go.nebula.tv/isaacarthur
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Use the link gift.nebula.tv/isaacarthur to give a year of Nebula to a friend for just $30.

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Credits: Machine Monitors
Episode 444b; May 1, 2024 
Produced, Written & Narrated by: Isaac Arthur
Music Courtesy of:
Epidemic Sound http://epidemicsound.com/creator

Ancient Machine Monitors: Alien Watchdogs, AI Custodians, and the Fermi Paradox

From quantum tunneling to cosmic inflation, we journey through the theories behind the Big Bang and beyond — and ask the big question: could another Big Bang be in our cosmic future?

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Could We See a Second Big Bang?
Episode 724.1; June 10, 2025
Written, Produced & Narrated by: Isaac Arthur
Select imagery/video supplied by Getty Images 
Music Courtesy of Epidemic Sound http://epidemicsound.com/creator


0:00 Intro
1:59 Why Did the Big Bang Happen?
3:01 Quantum Fluctuations
5:20 Inflation and False Vacuum Decay
7:56 Cyclic Models and the Ekpyrotic Universe
9:43 Big Bounce Cosmology 
12:35 Tunneling from Nothing 
14:04 Beginnings, Endings, and Echoes