Science & Futurism with Isaac Arthur

What if we found a true second Earth nearby? A living world, a barren paradise, or something too familiar to be natural could change science, politics, and humanity’s future forever.Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthurWatch my exclusive video Nearby Supernovae: https://nebula.tv/videos/isaacarthur-nearby-supernovae-could-one-destroy-earth-and-could-we-stop-itCheck out Gods & Monsters: https://nebula.tv/curiousarchive/gods-and-monsters?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/53GAShECredits:What If We Found a Second Earth Nearby?Written, Produced & Narrated by: Isaac ArthurMusic Courtesy of Stellardrone & Chris Zabriskie Select imagery/video supplied by Getty ImagesChapters 0:00 Intro1:26 What Counts as a “Second Earth”? 4:34 The Hidden Twin6:24 The Real Discovery: A Nearby Earth8:42 If It Has Life9:17 Alien Life, But Compatible11:15 Familiar Life - Too Familiar13:26 Gods & Monsters14:36 If It’s Barren - but Ready18:00 The Rush: Who Gets a Whole World?20:49 The Economics of a Second Earth23:30 How Do You Divide a Planet?26:27 The Long View: A Second Earth Changes EverythingSee Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

From Dysonian SETI to waste heat and galactic timelines, we explore why we haven’t found Dyson Spheres—and what their absence reveals about civilization.Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthurWatch my exclusive video Nearby Supernovae: https://nebula.tv/videos/isaacarthur-nearby-supernovae-could-one-destroy-earth-and-could-we-stop-it🛒 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/53GAShECredits:Why Haven’t We Found Dyson Spheres Yet?Written, Produced & Narrated by: Isaac ArthurMusic Courtesy of Stellardrone & Chris Zabriskie Select imagery/video supplied by Getty Images, Jeremy Jozwik, Ken York, Sergio BoteroChapters0:00 Intro2:41 What Could We Actually See?9:11 The Timeline Problem12:24 Looking Out Is Looking Back17:42 The Dyson Dilemma26:07 Alternative Paths: Civilizations That Don’t Expand29:26 Energy, Efficiency, and the Problem of Waste Heat33:21 Nebula34:22 The Silence of the SpheresSee Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

Can humanity ever travel faster than light, or does every shortcut through spacetime break causality itself? We explore warp drives, wormholes, tachyons, and why the universe pushes back.Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthurWatch my exclusive video Nearby Supernovae: https://nebula.tv/videos/isaacarthur-nearby-supernovae-could-one-destroy-earth-and-could-we-stop-it🛒 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/53GAShECredits:The Physics of FTL TravelWritten, Produced & Narrated by: Isaac ArthurEditor: Lukas KonecnyMusic Courtesy of Stellardrone & Chris Zabriskie Select imagery/video supplied by Getty ImagesChapters0:00 Intro0:12 Faster Than Light Is the Wrong Question4:18 Spacetime Engineering: Moving the Map Instead of the Ship5:24 Warp Drives: Surfing Spacetime11:46 Wormholes: Shortcuts with a Side of Time Travel13:20 Hyperspace: Shortcuts Through the Bulk15:11 Solitons: The Positive Energy Challenge17:35 The Krasnikov Tube: Building a Star-Road20:30 Natural Relativistic Loopholes: Cosmic Strings and Tipler Cylinders25:05 Tachyons: The Simplest Way to Break Time28:04 Vacuum & Time-Advance Effects: When Causality Bends, Just a Little32:19 Quantum Red Herrings35:42 Nebula36:54 Why the Universe Pushes Back: Chronology Protection and Self-Defeating PhysicsSee Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

Explore the future of space habitats, from rotating cylinders and torus colonies to orbital cities, asteroid homes, and the megastructures humanity may one day live inside.Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthurWatch my exclusive video Nearby Supernovae: https://nebula.tv/videos/isaacarthur-nearby-supernovae-could-one-destroy-earth-and-could-we-stop-it🛒 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/53GAShECredits:Space Habitats: The Megastructures We’ll Call HomeWritten, Produced & Narrated by: Isaac ArthurEditors: Briana Brownell, Ludwig LuskaSelect imagery/video supplied by Getty Images, Anthrofuturism, Apogii.uk, Bryan Versteeg, Fishy Tree, Katie Byrne, Jarred Eagley, Jeremy Jozwik, Justin Dixon, Ken York YD Visual, Neil Blevins, Sergio Botero, Steve Bowers, and Udo SchroeterMusic by Epidemic Sound: http://nebula.tv/epidemic and Markus Junnikkala, Phase Shift, Kai Engel, Chris Zabriskie, Taras Harkavyi, and StellardroneSee Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

Are aliens watching us? The Zoo Hypothesis suggests advanced civilizations may be hiding, enforcing a galactic quarantine, or masking reality itself. Explore the Fermi Paradox, Dyson dilemma, and the unsettling possibility we are not alone—but observed.Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthurWatch my exclusive video Surviving a New Ice Age: https://nebula.tv/videos/isaacarthur-surviving-a-new-ice-ageCheck out Gods & Monsters: https://nebula.tv/curiousarchive/gods-and-monsters?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/53GAShECredits:The Zoo Hypothesis and the Fermi Paradox: Are We Being Watched?Written, Produced & Narrated by: Isaac ArthurMusic Courtesy of Chris Zabriskie & StellardroneSelect imagery/video supplied by Getty ImagesChapters0:00 Intro - Silence as Deliberate Choice2:15 The Zoo Hypothesis and Time Asymmetry4:30 The Dyson Dilemma (Reframed)5:54 Heavy Stealth and the Expansion of the Zoo8:33 Who Are the Zookeepers?12:23 Why Build a Zoo?16:37 Enforcement: How the Zoo Is Maintained20:39 Heavy Stealth: Hiding by Overwhelming Force24:54 Cracks in the Glass: Can the Zoo Be Detected?29:12 Gods & Monsters30:08 Leakage: Accidents, Dissidents, and the Cost of Perfection33:22 Graduation or Exposure: How the Zoo Ends37:27 What It Means If We’re Being Watched — Or Never Were39:15 The Bars Are Made of TimeSee Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

Artificial intelligence is changing the world, but not quite the way headlines suggest. Here’s a calmer look at AI’s risks, limits, and real potential.Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthurWatch my exclusive video Surviving a New Ice Age: https://nebula.tv/videos/isaacarthur-surviving-a-new-ice-ageCheck out Abolish Everything: https://nebula.tv/abolish?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/53GAShECredits:Don’t Panic - A Guide to Artificial IntelligenceWritten, Produced & Narrated by: Isaac ArthurEditors: Donagh Broderick & Merv Johnson IIMusic by Epidemic Sound: http://nebula.tv/epidemicStellardrone & Chris Zabriskie Select imagery/video supplied by Getty ImagesChapters0:00 Intro7:22 What We Actually Mean by “AI”12:50 How AI Actually Works - Inside the Black Box23:17 Why Everyone Is Panicking?36:52 AI as Invisible Infrastructure39:33 The Economic Shock47:15 Abolish Everything 48:16The Real Limits of AISee Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

In space, everything is a weapon. From orbits to infrastructure, here’s how the first real war between worlds might actually be fought.Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthurWatch my exclusive video Surviving a New Ice Age: https://nebula.tv/videos/isaacarthur-surviving-a-new-ice-ageCheck out Real Engineering: https://nebula.tv/realengineering?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/53GAShECredits:The First Interplanetary War: Tactics in the Solar SystemWritten, Produced & Narrated by: Isaac ArthurEditor: Keith OxenriderGraphics from: Jeremy Jozwik, Legiontech StudiosSelect imagery/video supplied by Getty ImagesSee Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

Before Fleet Unity can colonize Eridani, someone must arrive first, build the brakes, and turn frozen moons into the machinery of interstellar arrival.Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthurWatch my exclusive video Surviving a New Ice Age: https://nebula.tv/videos/isaacarthur-surviving-a-new-ice-ageCheck out Quinn's Ideas: https://nebula.tv/quinnsideas?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/53GAShECredits:Fleet Unity: The Eridani Expedition - Interstellar BeachheadProduced & Narrated by Isaac ArthurWritten by Isaac Arthur & Matt KosubGraphics from Jeremy Jozwik, LEgionTech, Sergio BoteroMusic Courtesy of Chris Zabriskie & StellardroneSelect imagery/video supplied by Getty Images0:00 Intro4:23 Authority at the End of a Light-Year10:58 The Beachhead21:49 Lachesis & Atropos29:30 Dune30:40 ArrivalSee Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.