Kurzgesagt - In a Nutshell: 2024
Season 12 Lore Primer
Key plot threads, lore context, and character stakes you need to remember before diving into this season.
- Directly follows the overarching narrative developments of Kurzgesagt - In a Nutshell Season 11.
- Faction dynamics and core character alliances shift under escalating external stakes.
- Crucial mysteries introduced previously reach key turning points and narrative reckonings.
- Sets up serialized story arcs that build directly toward the climactic season finale.
Episode Guide
Season 12 Progress Shield
Did The Future Already Happen? - The Paradox of Time
Jan 30, 2024 · 13 min
Is your future already written? Do your past, present, and future all exist right now? Surprisingly, the answer could be yes. Let's take a look at what time is and how it works –
What Happens AFTER Nuclear War?
Feb 20, 2024 · 11 min
A nuclear bomb is the most devastating explosion ever created. One bomb can end tens of thousands of lives immediately and hundreds of thousands through the radioactive aftermath.
The Paradox of an Infinite Universe
Feb 27, 2024 · 14 min
What is outside of the universe? We know that the universe had a beginning 14 billion years ago and that it has been expanding ever since. But something that is expanding should a
How The Dinosaurs Actually Died
Mar 26, 2024 · 12 min
A ruthless murder was committed! Someone killed the dinosaurs and we have the murderer! Witnesses say that an Everest-sized asteroid hit Earth, devastated the planet and caused a m
There Are Thousands of Alien Empires in The Milky Way
Apr 16, 2024 · 14 min
We often assume that advanced technology will make it easy for aliens to colonize space. But what if space exploration is always difficult, no matter how advanced you are? Let’s t
Smoking is Awesome
May 7, 2024 · 12 min
We need to have an honest conversation about smoking: The problem with smoking is that it is way more than just a physical addiction. Smoking creates a temporary problem and offer
This Black Hole Could be Bigger Than The Universe
May 21, 2024 · 12 min
Black holes might create infinite universes while destroying time and space. Everything in existence could be black holes, all the way down. We might live inside a black hole that
Do You Have a Free Will?
Jun 11, 2024 · 13 min
You may think you have free will and can choose what you do, but this might be an illusion. Your body is made up of particles that blindly follow the laws of physics, with every ou
This Disease is Deadlier Than The Plague
Jun 25, 2024 · 11 min
The white death has haunted humanity like no other disease following us for thousands, maybe millions of years. In the last 200 years it killed a billion people – way more than all
A.I. ‐ Humanity's Final Invention?
Aug 6, 2024 · 18 min
Humans rule Earth without competition. But we are about to create something that may change that: our last invention, the most powerful tool, weapon, or maybe even entity: Artifici
Fever Feels Horrible, but is Actually Awesome!
Aug 13, 2024 · 13 min
Fever feels bad. So we take medication to suppress it – but is this a good idea? It turns out fever is one of the oldest defenses against disease. What exactly is a fever, and how
We Traveled Back in Time. Now Physicists Are Angry.
Aug 27, 2024 · 11 min
Time travel is possible. In fact, you’ve been doing it since the day you were born. But what if we told you there’s a way to hack the universe and manipulate time itself? We just
We Need to Rethink Exercise (Updated Version)
Sep 12, 2024 · 13 min
Exercising doesn’t help you lose weight. In fact, it barely changes your daily calorie burn. Welcome to the workout paradox! Let’s dive into the science of how your body actually
Why Scientists Are Puzzled By This Virus
Sep 17, 2024 · 11 min
You’ve got trillions of viruses inside you – right now! But these aren’t the viruses you fear. Some of them are your body’s secret protectors, keeping deadly bacteria in check and
This Video Might Save 58 Lives Next Week
Sep 24, 2024 · 13 min
58 of you watching this video right now will not be alive next week. And it’s not because of some freak accident or rare disease. It’s because of everyday actions you probably thin
There Is Something Hiding Inside Earth
Oct 3, 2024 · 12 min
We’ve found a new planet, home to octillions of the most extreme beings living in the most absurd and deadly hellscape. In absolute darkness, crushed by the weight of mountains, st
Tired of Doomscrolling?
Oct 8, 2024 · 11 min
Being a human in the 21st century often feels frustrating. We are clearly at the high point of our species, while at the same time life is incredibly hard! We are divided, unable t
We Fell For The Oldest Lie On The Internet
Oct 29, 2024 · 13 min
“Your blood vessels stretch a staggering 100,000 kilometers, enough to wrap around Earth twice!" Sounds amazing, right? We spent over a year trying to confirm this claim, and let's
The Most Insane Weapon You Never Heard About
Nov 5, 2024 · 14 min
At the height of the Cold War, a terrifying concept emerged: a bomb so powerful it wouldn’t need to be dropped. Known as Project Sundial, this doomsday device would have left a 400
We Have To Talk About Weed
Nov 12, 2024 · 15 min
Cannabis is finally being decriminalized in more and more places around the world. And for very good reasons! Compared to other legal drugs such as alcohol, cannabis is pretty mild
Vaping Is Too Good To Be True
Nov 19, 2024 · 14 min
Vaping is marketed as the “safe” alternative to smoking, but it’s far from being harmless. Unregulated ingredients, hidden toxins, and extreme nicotine levels mean we’re conducting
Black Hole's Evil Twin - Gravastars Explained
Dec 3, 2024 · 14 min
Gravastars could change how we think about the universe. These cosmic objects solve black holes’ biggest problems without breaking physics. From their ultra-thin shell to their ene
Is The World Getting More Violent?
Dec 10, 2024 · 13 min
Ten years ago, in 2014, we released a video titled "Is War Over?". Back then, the question didn’t seem so naive. It seemed violent conflict was on the decline and the world more pe
The Real Reason Why You Have Allergies
Dec 12, 2024 · 15 min
Allergies are more than just overreactions – they might be an evolutionary relic from a time when worms invaded our bodies daily.