PodcastsScienceScience & Futurism with Isaac Arthur

Science & Futurism with Isaac Arthur

Isaac Arthur
Science & Futurism with Isaac Arthur
Latest episode

1184 episodes

  • Science & Futurism with Isaac Arthur

    The Tokamak Problem: Can We Ever Make Fusion Practical? (Narration Only)

    2026/05/07 | 34 mins.
    Can nuclear fusion ever be practical? We explore tokamaks, plasma confinement, energy balance, and the real engineering challenges behind building a working fusion reactor—and whether fusion power will ever scale.

    Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthur
    Watch my exclusive video Surviving a New Ice Age: https://nebula.tv/videos/isaacarthur-surviving-a-new-ice-age
    Check out Tech Altar: https://nebula.tv/techaltar?ref=isaacarthur

    🛒 SFIA Merchandise: https://isaac-arthur-shop.fourthwall.com/
    🌐 Visit our Website: http://www.isaacarthur.net
    ❤️ Support us on Patreon: https://www.patreon.com/IsaacArthur
    ⭐ Support us on Subscribestar: https://www.subscribestar.com/isaac-arthur
    👥 Facebook Group: https://www.facebook.com/groups/1583992725237264/
    📣 Reddit Community: https://www.reddit.com/r/IsaacArthur/
    🐦 Follow on Twitter / X: https://twitter.com/Isaac_A_Arthur
    💬 SFIA Discord Server: https://discord.gg/53GAShE
    Credits: The Tokamak Problem: Can We Ever Make Fusion Practical?
    Written, Produced & Narrated by: Isaac Arthur
    Select imagery/video supplied by Getty Images
    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.
  • Science & Futurism with Isaac Arthur

    The Tokamak Problem: Can We Ever Make Fusion Practical?

    2026/05/07 | 34 mins.
    Can nuclear fusion ever be practical? We explore tokamaks, plasma confinement, energy balance, and the real engineering challenges behind building a working fusion reactor—and whether fusion power will ever scale.

    Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthur
    Watch my exclusive video Surviving a New Ice Age: https://nebula.tv/videos/isaacarthur-surviving-a-new-ice-age
    Check out Tech Altar: https://nebula.tv/techaltar?ref=isaacarthur

    🛒 SFIA Merchandise: https://isaac-arthur-shop.fourthwall.com/
    🌐 Visit our Website: http://www.isaacarthur.net
    ❤️ Support us on Patreon: https://www.patreon.com/IsaacArthur
    ⭐ Support us on Subscribestar: https://www.subscribestar.com/isaac-arthur
    👥 Facebook Group: https://www.facebook.com/groups/1583992725237264/
    📣 Reddit Community: https://www.reddit.com/r/IsaacArthur/
    🐦 Follow on Twitter / X: https://twitter.com/Isaac_A_Arthur
    💬 SFIA Discord Server: https://discord.gg/53GAShE
    Credits: The Tokamak Problem: Can We Ever Make Fusion Practical?
    Written, Produced & Narrated by: Isaac Arthur
    Select imagery/video supplied by Getty Images
    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.
  • Science & Futurism with Isaac Arthur

    Genetic Bottlenecks – How Few People Can Start a World? Or Restart One?

    2026/05/03 | 24 mins.
    When disaster leaves only a handful, can a civilization restart? We explore genetic bottlenecks, colony failure, and the limits of survival.

    Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthur
    Watch my exclusive video Surviving a New Ice Age: https://nebula.tv/videos/isaacarthur-surviving-a-new-ice-age
    Check out Practical Engineering: https://nebula.tv/practicalconstruction?ref=isaacarthur

    🛒 SFIA Merchandise: https://isaac-arthur-shop.fourthwall.com/
    🌐 Visit our Website: http://www.isaacarthur.net
    ❤️ Support us on Patreon: https://www.patreon.com/IsaacArthur
    ⭐ Support us on Subscribestar: https://www.subscribestar.com/isaac-arthur
    👥 Facebook Group: https://www.facebook.com/groups/1583992725237264/
    📣 Reddit Community: https://www.reddit.com/r/IsaacArthur/
    🐦 Follow on Twitter / X: https://twitter.com/Isaac_A_Arthur
    💬 SFIA Discord Server: https://discord.gg/53GAShE
    Credits:
    Genetic Bottlenecks – How Few People Can Start a World? Or Restart One?
    Written, Produced & Narrated by: Isaac Arthur
    Select imagery/video supplied by Getty Images

    Chapters
    0:00 Intro
    10:56 Restoration
    19:26 Practical Engineering
    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.
  • Science & Futurism with Isaac Arthur

    Genetic Bottlenecks – How Few People Can Start a World? Or Restart One? (Narration Only)

    2026/05/03 | 23 mins.
    When disaster leaves only a handful, can a civilization restart? We explore genetic bottlenecks, colony failure, and the limits of survival.

    Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthur
    Watch my exclusive video Surviving a New Ice Age: https://nebula.tv/videos/isaacarthur-surviving-a-new-ice-age
    Check out Practical Engineering: https://nebula.tv/practicalconstruction?ref=isaacarthur

    🛒 SFIA Merchandise: https://isaac-arthur-shop.fourthwall.com/
    🌐 Visit our Website: http://www.isaacarthur.net
    ❤️ Support us on Patreon: https://www.patreon.com/IsaacArthur
    ⭐ Support us on Subscribestar: https://www.subscribestar.com/isaac-arthur
    👥 Facebook Group: https://www.facebook.com/groups/1583992725237264/
    📣 Reddit Community: https://www.reddit.com/r/IsaacArthur/
    🐦 Follow on Twitter / X: https://twitter.com/Isaac_A_Arthur
    💬 SFIA Discord Server: https://discord.gg/53GAShE
    Credits:
    Genetic Bottlenecks – How Few People Can Start a World? Or Restart One?
    Written, Produced & Narrated by: Isaac Arthur
    Select imagery/video supplied by Getty Images

    Chapters
    0:00 Intro
    10:56 Restoration
    19:26 Practical Engineering
    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.
  • Science & Futurism with Isaac Arthur

    Fleet of the Void - Designing Warships for Deep Space (Narration Only)

    2026/04/30 | 33 mins.
    How would real space war actually work? From stealth myths to fuel limits, explore the brutal physics shaping starships, tactics, and survival in deep space combat.

    Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthur
    Watch my exclusive video Settling Saturn's Rings: https://nebula.tv/videos/isaacarthur-settling-saturns-rings-exploring-the-origins-resources-and-future-habitats-of-a-halo-world
    Check out The Anatomy of the Nokia 3310: https://nebula.tv/videos/realengineering-the-anatomy-of-the-nokia-3310/?ref=isaacarthur

    🛒 SFIA Merchandise: https://isaac-arthur-shop.fourthwall.com/
    🌐 Visit our Website: http://www.isaacarthur.net
    ❤️ Support us on Patreon: https://www.patreon.com/IsaacArthur
    ⭐ Support us on Subscribestar: https://www.subscribestar.com/isaac-arthur
    👥 Facebook Group: https://www.facebook.com/groups/1583992725237264/
    📣 Reddit Community: https://www.reddit.com/r/IsaacArthur/
    🐦 Follow on Twitter / X: https://twitter.com/Isaac_A_Arthur
    💬 SFIA Discord Server: https://discord.gg/53GAShE
    Credits:
    Fleet of the Void - Designing Warships for Deep Space
    Written, Produced & Narrated by: Isaac Arthur
    Editor: Keith Oxenrider
    Graphics: Darth Biomech, Fishy Tree, Jeremy Jozwik, Legiontech, Udo Schroeter
    Music by Epidemic Sound: http://nebula.tv/epidemic Chris Zabriskie & Stellardrone
    Select imagery/video supplied by Getty Images

    Chapters
    0:00 Intro
    1:53 The Strategic Context – Fighting in the Infinite
    4:40 Unpredictable Motion and Limited Fuel Workarounds
    6:37 Why Not Use Robot Pilots and Just Dodge Forever?
    8:00 The Tethered Fleet: A fuel saving trick
    10:13 No Stealth in Space
    16:34 Warship Design: Built for the Void, Not for Hollywood
    21:31 Command and Crew: Flesh, Steel, and Silence
    25:43 Real Engineering
    26:43 Life Support
    28:06 Tactics in the Deep
    31:42 Philosophy of the Void
    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

More Science podcasts

About Science & Futurism with Isaac Arthur

Science & Futurism with Isaac Arthur explores humanity’s long-term future through space exploration, advanced technology, and big-picture science. Hosted by National Space Society President Isaac Arthur, each episode uses real science and careful speculation to examine space colonization, megastructures, artificial intelligence, post-scarcity economies, and the physics shaping civilization beyond Earth.
Podcast website

Listen to Science & Futurism with Isaac Arthur, Ologies with Alie Ward and many other podcasts from around the world with the radio.net app

Get the free radio.net app

  • Stations and podcasts to bookmark
  • Stream via Wi-Fi or Bluetooth
  • Supports Carplay & Android Auto
  • Many other app features