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Recent episodes
Why Inventing Color TV Was So Hard
May 4, 2026
1h 01m 19s
The Chernobyl Disaster
Apr 28, 2026
24m 41s
How Big Is the Moon?
Apr 23, 2026
18m 58s
How Deep Is the Ocean
Apr 19, 2026
45m 06s
Why We Sleep
Apr 14, 2026
20m 19s
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| Date | Episode | Topics | Guests | Brands | Places | Keywords | Sponsor | Length | |
|---|---|---|---|---|---|---|---|---|---|
| 5/4/26 |  Why Inventing Color TV Was So Hard | Color television seems simple today… but getting there was anything but. In this episode, we explore the decades-long challenge of bringing color to the screen. Early engineers weren’t just trying to add color—they had to reinvent how images were captured, transmitted, and displayed, all while making sure new broadcasts still worked with millions of existing black-and-white TVs. Why was color so difficult to achieve? How do you send color signals without breaking older systems? And what technological breakthroughs finally made it possible? From competing standards to the science of light and human vision, we break down the innovations that turned television from shades of gray into the vibrant displays we take for granted today. Because sometimes… the hardest problems are the ones hiding in plain sight.Become a supporter of this podcast: https://www.spreaker.com/podcast/kurzgesagt-podcast-science-revealed--6600013/support. | 1h 01m 19s | ||||||
| 4/28/26 | The Chernobyl Disaster✨ | nuclear disasterChernobyl+4 | — | — | Chernobyl Nuclear Power PlantSoviet Union | Chernobylnuclear disaster+4 | — | 24m 41s | |
| 4/23/26 | How Big Is the Moon? | The Moon looks small in the sky… but its true size might surprise you. In this episode, we take a closer look at Earth’s only natural satellite — the Moon — and explore just how big it really is. From its diameter and mass to how it compares with planets and other moons in the solar system, the numbers tell a much bigger story than what we see from Earth. How does the Moon compare to Earth? Why does it appear larger than it actually is? And what would happen if it were any bigger… or smaller? We break down the scale, the science, and the surprising role the Moon plays in shaping tides, stabilizing Earth’s rotation, and even making life possible. Because sometimes… the things that seem small are anything but.Become a supporter of this podcast: https://www.spreaker.com/podcast/kurzgesagt-podcast-science-revealed--6600013/support. | 18m 58s | ||||||
| 4/19/26 | How Deep Is the Ocean | The ocean covers most of our planet… but we’ve barely explored what lies beneath. In this episode, we take a journey from the surface all the way down to the deepest known point on Earth — the Mariana Trench. As we descend layer by layer, sunlight fades, pressure rises, and the environment becomes more extreme than almost anywhere else on the planet. What lives in total darkness? How deep can humans actually go? And what secrets are still hidden miles below the surface? From the twilight zone to the crushing depths of the abyss, we explore the science, the creatures, and the mysteries of the deep ocean. Because the deeper you go… the less we know.Become a supporter of this podcast: https://www.spreaker.com/podcast/kurzgesagt-podcast-science-revealed--6600013/support. | 45m 06s | ||||||
| 4/14/26 | Why We Sleep | This episode explore the biological necessity and physiological mechanisms of sleep, emphasizing its role in maintaining metabolic, cognitive, and systemic health. Research on rats and fruit flies demonstrates that prolonged sleep deprivation leads to fatal outcomes, including oxidative stress in the gut, thermoregulatory failure, and impaired cerebral glucose metabolism. Key theories such as Synaptic Homeostasis (SHY) and the Brain Plasticity theorysuggest that sleep is essential for downscaling neural connections and reorganizing brain structure. Additionally, the discovery of the glymphatic system reveals that sleep facilitates the cleansing of neurotoxic waste via cerebrospinal fluid pulses. Recent evidence even suggests that mitochondria act as internal sensors for sleep pressure, triggering rest to repair oxidative damage. Ultimately, these sources portray sleep as an active, restorative state that is indispensable for preventing neurodegeneration and systemic collapse.Become a supporter of this podcast: https://www.spreaker.com/podcast/kurzgesagt-podcast-science-revealed--6600013/support.This episode includes AI-generated content. | 20m 19s | ||||||
| 4/11/26 | Why Moon Landing Photos Have No Stars | It sounds strange… If you were standing on the Moon, surrounded by the darkness of space, you should see more stars than ever—right? Not exactly. In this episode, we uncover why astronauts on missions like Apollo 11 reported seeing almost no stars while standing on the lunar surface. The answer lies in a surprising combination of light, human vision, and camera exposure. Why does the Sun’s glare overpower the stars? How does the Moon’s surface reflect light? And why do photos from space often appear starless? From the science of brightness and contrast to how our eyes adapt in extreme environments, we break down the real reason the stars seem to disappear in one of the darkest places imaginable. Because sometimes… what you don’t see tells the most interesting story.Become a supporter of this podcast: https://www.spreaker.com/podcast/kurzgesagt-podcast-science-revealed--6600013/support.This episode includes AI-generated content. | 22m 45s | ||||||
| 4/4/26 | The Iron Star Era | Long after the last stars have burned out… the universe doesn’t end. It simply goes quiet. In this episode, we travel unimaginably far into the future — beyond galaxies, beyond light — into the era where only the remnants of dead stars remain. White dwarfs cool, neutron stars fade, and what’s left slowly transforms into cold, lifeless objects known as iron stars. Guided by the principles of thermodynamics and the relentless march of entropy, we explore how matter itself evolves over trillions upon trillions of years. No more fusion. No more light. Just a dark universe drifting toward equilibrium. How does a star become iron? What happens when all energy is used up? And is this truly the final chapter of everything? From the last flickers of starlight to the ultimate fate of matter, this is the story of a universe slowly fading into silence. Because even the cosmos… doesn’t last forever.Become a supporter of this podcast: https://www.spreaker.com/podcast/kurzgesagt-podcast-science-revealed--6600013/support.This episode includes AI-generated content. | 17m 17s | ||||||
| 3/31/26 | What Happens the Day After We Build a “God”? | The moment we create an intelligence greater than our own… everything changes. In this episode, we explore what happens after the birth of Artificial General Intelligence — a system capable of understanding, learning, and reasoning beyond human limits. Not in decades… but the very next day. Who controls it? Can it be contained? Or does control become an illusion the moment it surpasses us? From global power shifts and economic disruption to ethical dilemmas and existential risks, we break down the immediate consequences of creating something that could outthink every human on Earth. Will it solve humanity’s greatest problems… or become one we can’t escape? Because the real question isn’t if we build it— it’s what happens right after.Become a supporter of this podcast: https://www.spreaker.com/podcast/kurzgesagt-podcast-science-revealed--6600013/support.This episode includes AI-generated content. | 1h 00m 34s | ||||||
| 3/26/26 | What is Stiff-person syndrome? | Stiff-person syndrome is a rare neurological disorder that affects the brain and nervous system, causing severe muscle stiffness and painful spasms. In this episode, we break down what Stiff-person syndrome really is, why it happens, and how it impacts the people living with it. The condition is believed to be an autoimmune disorder, where the body’s immune system mistakenly attacks parts of the nervous system—especially those responsible for controlling muscle movement. People with stiff-person syndrome often experience: Progressive muscle stiffness, especially in the torso and limbsSudden, intense muscle spasms triggered by noise, touch, or emotional stressDifficulty walking or maintaining balance over timeWe’ll also explore its connection to other autoimmune conditions, the challenges of diagnosis due to its rarity, and the treatments that can help manage symptoms—even though there is currently no cure. The condition gained wider public attention when global superstar Celine Dion revealed her diagnosis, shedding light on how life-changing—and misunderstood—this disorder can be. Is it treatable? Why is it so difficult to diagnose? And what does living with stiff-person syndrome actually feel like? Let’s dive into one of the world’s rarest and most misunderstood neurological conditions.Become a supporter of this podcast: https://www.spreaker.com/podcast/kurzgesagt-podcast-science-revealed--6600013/support.This episode includes AI-generated content. | 38m 09s | ||||||
| 3/22/26 | How Parasites Hijack the Brain | What if your thoughts… weren’t entirely your own? In this episode, we uncover the disturbing world of microscopic parasites that can hijack the brains and behavior of much larger, more complex animals. From fungi that control insects to parasites that alter fear, movement, and decision-making, these tiny organisms can turn living creatures into unwitting hosts — or even “puppets.” At the center of it all is Toxoplasma gondii, a parasite known to influence the behavior of rodents — and possibly even humans. How do these organisms take control of a host’s brain? Why would evolution favor such bizarre strategies? And could something similar be affecting us without us even realizing it? Blending biology, neuroscience, and real-world case studies, we explore how parasites manipulate life from the inside out — challenging what we think we know about free will, control, and survival. Because sometimes… the most dangerous invaders aren’t the ones you can see.Become a supporter of this podcast: https://www.spreaker.com/podcast/kurzgesagt-podcast-science-revealed--6600013/support.This episode includes AI-generated content. | 43m 02s | ||||||
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| 3/17/26 | Dynamics of Black Holes | the edge of space and time, the rules of the universe begin to break. In this episode, we dive into the extreme physics of black holes — where gravity becomes so powerful that not even light can escape. From the moment a star collapses into a singularity to the formation of an event horizon, we explore what really happens inside these cosmic giants. How do black holes grow? What happens to anything that falls in? And could they eventually evaporate through Hawking radiation? We’ll uncover the strange dynamics that govern black holes — from warped spacetime predicted by the Theory of Relativity to the violent forces shaping galaxies across the universe. Black holes aren’t just cosmic destroyers… they may hold the key to understanding reality itself. Become a supporter of this podcast: https://www.spreaker.com/podcast/kurzgesagt-podcast-science-revealed--6600013/support.This episode includes AI-generated content. | 40m 39s | ||||||
| 3/8/26 | The Universe Is Erasing Its History | The universe was not always filled with shining galaxies and blazing stars. In fact, after the explosive birth of the cosmos during the Big Bang, there was a long and mysterious period when the universe was mostly dark. Scientists call this era the Cosmic Twilight—a transitional age when the first faint lights of the universe began to appear. During this time, gravity slowly pulled clouds of hydrogen together, igniting the very first stars and galaxies. These early cosmic pioneers started to illuminate the darkness and reshape the universe forever. In this episode, we explore the chronology of the Cosmic Twilight, from the fading glow of the early universe after the Cosmic Microwave Background, to the birth of the first stars during the Cosmic Dawn, and the dramatic transformation known as the Epoch of Reionization. How did the first stars form out of complete darkness? What did the universe look like before galaxies existed? And how are modern telescopes beginning to uncover this hidden chapter of cosmic history? Journey with us back more than 13 billion years to witness the moment the universe slowly emerged from darkness—and the first light began to shine. Become a supporter of this podcast: https://www.spreaker.com/podcast/kurzgesagt-podcast-science-revealed--6600013/support.This episode includes AI-generated content. | 45m 15s | ||||||
| 3/4/26 | Your Brain is a Time Machine | Your brain time-travels every day. It replays the past, predicts the future, and even invents memories that never happened. In this episode, we dive into the science of memory, imagination, and “mental time travel” — and reveal why your mind might be the most advanced time machine ever built.Become a supporter of this podcast: https://www.spreaker.com/podcast/kurzgesagt-podcast-science-revealed--6600013/support. | 34m 17s | ||||||
| 2/26/26 | What Happens When You Drink Water Immediately After a Meal? | You’ve probably heard the warning before: “Don’t drink water right after eating—it ruins digestion.” But is that actually true… or just a myth? In this episode, we separate fact from fiction and explore what really happens inside your body when you drink water during or immediately after a meal. Does water dilute stomach acid? Slow digestion? Cause bloating or weight gain? Or does it actually help your body break down food more efficiently? We dive into the science of digestion, stomach enzymes, hydration, and nutrient absorption to explain how your body truly handles liquids with food. Plus, we cover when drinking water helps, when it might cause discomfort, and simple habits to support better digestion overall. A clear, practical look at a common health myth—and what your body actually needs.Become a supporter of this podcast: https://www.spreaker.com/podcast/kurzgesagt-podcast-science-revealed--6600013/support. | 34m 03s | ||||||
| 2/24/26 | De Hartslag-Hacker: Hoe Reanimatie Letterlijk Levens Redt | Het is het verschil tussen leven en dood, verpakt in een ritme van 100 tot 120 slagen per minuut. We hebben het allemaal wel eens gezien in films, maar wat gebeurt er nou écht in het menselijk lichaam tijdens reanimatie (CPR)?In deze aflevering duiken we in de fascinerende wetenschap achter de borstcompressie. We laten de medische jargon achterwege en leggen uit hoe jij fungeert als een handmatige pomp voor het hart en de hersenen wanneer het systeem uitvalt. Van de cruciale rol van zuurstofrijk bloed tot de psychologie van het handelen in een crisissituatie: dit is alles wat je moet weten over de meest essentiële vaardigheid die er is.Wat je gaat ontdekken:De Mechanica van de Pomp: Hoe druk op de borstkas het bloed fysiek naar de hersenen dwingt om celsterfte te voorkomen.De 10-Minuten Regel: Waarom elke minuut zonder hulp de overlevingskans met 10% vermindert.Lucht of Geen Lucht? De verschuiving naar 'hands-only' reanimatie en waarom dit vaak effectiever is voor omstanders.De Mythe van de Ribben: Waarom een gebroken rib eigenlijk een teken kan zijn dat je het goed doet.Het Ritme van het Leven: Waarom nummers als 'Stayin' Alive' of 'Baby Shark' je beste hulpmiddelen zijn tijdens een noodgeval.Of je nu een gecertificeerde hulpverlener bent of iemand die nog nooit een EHBO-cursus heeft gevolgd, deze aflevering geeft je het zelfvertrouwen en de kennis om niet toe te kijken, maar in actie te komen.Belangrijke Punten uit deze Aflevering:Doel: Het behouden van de hersenfunctie tijdens een hartstilstand.Het Cijfer: Slechts 10% van de mensen overleeft een hartstilstand buiten het ziekenhuis zonder directe reanimatie. Met CPR verdubbel je die kans.AED's: Waarom dit apparaat je beste vriend is en waarom je er niet bang voor hoeft te zijn."Reanimatie is geen medische ingreep die voorbehouden is aan artsen; het is een overbrugging van tijd. Jij bent de batterij die het systeem draaiende houdt totdat de professionals het overnemen."Become a supporter of this podcast: https://www.spreaker.com/podcast/kurzgesagt-podcast-science-revealed--6600013/support. | 14m 33s | ||||||
| 2/10/26 | Why Ginger Is So Important to Men | Ginger isn’t just a kitchen spice—it’s one of the most powerful natural roots used in traditional medicine for centuries. But what makes it especially beneficial for men’s health? In this episode, we explore the science behind ginger and how its active compounds may support energy, circulation, testosterone levels, heart health, digestion, and immune function. We break down research on how ginger can help reduce inflammation, improve blood flow, support fertility, ease muscle soreness after workouts, and even aid metabolic health. You’ll also learn the safest and most effective ways to consume it—whether fresh, powdered, or brewed as tea—and separate real benefits from exaggerated claims. Simple, affordable, and widely available, ginger might be one of the easiest natural additions to improve overall wellness. This episode explains why.Become a supporter of this podcast: https://www.spreaker.com/podcast/kurzgesagt-podcast-science-revealed--6600013/support. | 30m 43s | ||||||
| 2/5/26 | Scientific Breakthroughs You Should Know | What if one year could redefine the future of humanity? In this episode, we explore the most exciting and game-changing scientific breakthroughs of 2026—from advances in artificial intelligence and medicine to space exploration, clean energy, and quantum technology. These aren’t just lab experiments; they’re discoveries already shaping how we live, work, and survive on this planet. We break down cutting-edge innovations like next-generation vaccines, smarter AI systems, fusion energy progress, new exoplanet findings, and revolutionary materials that could transform transportation and computing. More importantly, we explain what these breakthroughs actually mean in everyday terms—who benefits, who’s at risk, and what changes might be coming sooner than we expect. Fast-paced, hopeful, and grounded in real science, this episode is your guided tour through the ideas pushing humanity into the future.Become a supporter of this podcast: https://www.spreaker.com/podcast/kurzgesagt-podcast-science-revealed--6600013/support. | 36m 12s | ||||||
| 1/29/26 | What Voyager 1 Found at the Edge of the Solar System | Launched in 1977, Voyager 1 has traveled farther than any human-made object in history—and what it discovered at the edge of our solar system reshaped our understanding of space. In this episode, we explore Voyager 1’s historic journey beyond the planets and into interstellar space, explaining what it actually detected as it crossed the heliopause—the boundary between the Sun’s influence and the wider galaxy. We break down the strange changes in cosmic radiation, magnetic fields, and charged particles that confirmed Voyager 1 had truly left the solar system. You’ll also learn what the spacecraft revealed about the solar wind, how scientists know it’s now in interstellar space, and why Voyager’s instruments are still sending valuable data decades later. A fascinating look at humanity’s most distant messenger—and what lies beyond the protective bubble of our Sun.Become a supporter of this podcast: https://www.spreaker.com/podcast/kurzgesagt-podcast-science-revealed--6600013/support. | 33m 42s | ||||||
| 1/26/26 | The Gulf Stream | The Gulf Stream is one of the most powerful and influential ocean currents on Earth—and it quietly shapes weather, climate, and life across the planet. In this episode, we explore how the Gulf Stream forms, how it moves warm water across the Atlantic, and why it plays a crucial role in regulating temperatures in North America and Europe. We break down the science behind ocean circulation, the connection between the Gulf Stream and global climate systems, and what could happen if this current weakens or shifts due to climate change. From milder European winters to stronger storms and rising sea levels, the effects of the Gulf Stream reach far beyond the ocean. A clear and fascinating look at the hidden engine driving Earth’s climate system.Become a supporter of this podcast: https://www.spreaker.com/podcast/kurzgesagt-podcast-science-revealed--6600013/support. | 33m 51s | ||||||
| 1/20/26 | Why Do We Drink Water | Water is everywhere—but why do we actually need to drink it to survive? In this episode, we break down the science of hydration and explain the vital roles water plays in the human body. From regulating body temperature and transporting nutrients to supporting brain function and cellular chemistry, water is at the center of nearly every biological process. We’ll also explore what happens when you don’t drink enough, how hydration needs vary by age and activity, and common myths about water intake. A clear, science-backed look at why water isn’t just refreshing—it’s essential for life.Become a supporter of this podcast: https://www.spreaker.com/podcast/kurzgesagt-podcast-science-revealed--6600013/support. | 24m 14s | ||||||
| 1/11/26 | You Need To Quit Weed | Cannabis is often labeled as harmless—but is it really? In this episode, we take a science-based look at marijuana use and explore when, why, and how it can start doing more harm than good. From brain chemistry and motivation to mental health, sleep, memory, and long-term dependence, we break down what research actually says about frequent weed use. We discuss how cannabis affects dopamine, productivity, emotional regulation, and anxiety, why quitting can be harder than expected, and what withdrawal really feels like. This episode also examines who is most at risk, how tolerance quietly builds, and why “everyone’s doing it” isn’t a reliable measure of safety. This is not a moral lecture—it’s an honest conversation about health, habits, and making informed choices in a world where weed is increasingly normalized.Become a supporter of this podcast: https://www.spreaker.com/podcast/kurzgesagt-podcast-science-revealed--6600013/support. | 47m 28s | ||||||
| 1/8/26 | Principles and Foundations of the Natural Sciences | What are the fundamental principles that govern the natural world? In this episode, we explore the core foundations of the natural sciences—physics, chemistry, biology, and earth science—and how they work together to explain reality. From observation and experimentation to scientific laws, theories, and models, we examine how knowledge is built, tested, and refined over time. The episode also highlights key concepts such as causality, energy, matter, evolution, and systems thinking, revealing how these ideas unify diverse scientific disciplines. Whether you’re a student, a curious learner, or a science enthusiast, this episode offers a clear and engaging roadmap to understanding how science explains the universe.Become a supporter of this podcast: https://www.spreaker.com/podcast/kurzgesagt-podcast-science-revealed--6600013/support. | 45m 53s | ||||||
| 1/4/26 | Thyroid Disorders and Clinical Management | Thyroid disorders affect millions of people worldwide, yet they often go undiagnosed or misunderstood. In this episode, we explore the science and clinical management of common thyroid conditions, including hypothyroidism, hyperthyroidism, Hashimoto’s disease, Graves’ disease, and thyroid nodules. We break down how the thyroid gland regulates metabolism, energy, growth, and hormone balance—and what happens when this system goes wrong. You’ll learn to recognize key symptoms, understand diagnostic tools such as blood tests and imaging, and gain insight into modern treatment options ranging from medication and lifestyle management to surgery and radioactive iodine therapy. This episode provides a clear, practical overview for anyone interested in endocrine health, medical science, or improving patient awareness and outcomes.Become a supporter of this podcast: https://www.spreaker.com/podcast/kurzgesagt-podcast-science-revealed--6600013/support. | 28m 05s | ||||||
| 12/31/25 | Scientific Horizons: The 2025 Year in Review | As 2025 comes to a close, this episode takes a sweeping look at the scientific breakthroughs, discoveries, and debates that shaped the year. From major advances in artificial intelligence and medical research to new insights in space exploration, climate science, and quantum technology, Scientific Horizons: The 2025 Year in Review breaks down what mattered most—and why. We explore how these developments are already influencing everyday life, the ethical questions they raise, and the discoveries that could redefine the future. Whether you’re a science enthusiast or just curious about where humanity is headed, this episode offers a clear, engaging snapshot of the year that pushed the boundaries of knowledge.Become a supporter of this podcast: https://www.spreaker.com/podcast/kurzgesagt-podcast-science-revealed--6600013/support. | 52m 03s | ||||||
| 12/27/25 | Stranger Things Physics Explained | What if the science behind Stranger Things isn’t as fictional as it seems? In this episode, we break down the real physics concepts hidden beneath the show’s supernatural storylines—from parallel universes and alternate dimensions to electromagnetism, energy fields, and the limits of human perception. How close is the Upside Down to real multiverse theories? Could portals, telekinesis, or time distortion ever exist according to modern physics? We separate cinematic fantasy from scientific fact, using real-world theories to explain what Stranger Things gets right, what it exaggerates, and what remains purely science fiction. Perfect for fans of the show and anyone curious about how pop culture intersects with real physics.Become a supporter of this podcast: https://www.spreaker.com/podcast/kurzgesagt-podcast-science-revealed--6600013/support. | 33m 58s | ||||||
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Chart Positions
8 placements across 7 markets.
Chart Positions
8 placements across 7 markets.