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TED-Ed

TED-Ed’s mission is to create lessons worth sharing. Feed and expand your curiosity with our award-winning animated shorts - published on YouTube and available with supplemental learning materials on ed.ted.com. Want to suggest an idea for a TED-Ed animation, nominate an educator or animator? Visit our website at: http://ed.ted.com/get_involved. Consider backing us on Patreon. By doing so, you directly support our nonprofit mission to create free, high-quality educational content:

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All Episodes

6:40

The sneakiest tricksters of the animal kingdom -...

TED-Ed ·

2026/10/12

Sign up for our newsletter and never miss an animation: http://bit.ly/TEDEdNewsletterUploaded 18-12-18--A male firefly emits a series of enticing flashes. He hopes a female will respond and mate with him. A female from a different species mimics his patterns: by tricking the male, she lures him in -- and turns him into a meal. Where else do we see this kind of trickery in the animal kingdom? Eldridge Adams details the surprising complexity of how animals manipulate predators, prey and their rivals

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6:16

Why we love repetition in music - Elizabeth Hellmuth...

TED-Ed ·

2026/10/12

Dig into the principles of the exposure effect, which helps music listeners become active participants through repetition.Uploaded 02-09-14--How many times does the chorus repeat in your favorite song? How many times have you listened to that chorus? Repetition in music isn’t just a feature of Western pop songs, either; it’s a global phenomenon. Why? Elizabeth Hellmuth Margulis walks us through the basic principles of the ‘exposure effect,’ detailing how repetition invites us into music as active

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5:29

Can you solve the troll’s paradox riddle? - Dan Finkel

TED-Ed ·

2026/10/12

Practice more problem-solving at https://brilliant.org/TedEd/Solution to bonus riddle: https://brilliant.org/TedEdTrollParadox/Uploaded 20-12-18You and your brother have discovered another realm and set off exploring the new wonderful world. Along the way, you see a troll catching creatures in an enormous net. The troll agrees to release the creatures if you can come up with a statement that is both truth and false. Can you come up with the correct sentence and force the troll to release them? Dan

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5:32

What did dogs teach humans about diabetes? - Duncan...

TED-Ed ·

2026/10/11

View full lesson: http://ed.ted.com/lessons/what-did-dogs-teach-humans-about-diabetes-duncan-c-fergusonUploaded 28-08-14Diabetes has a history dating back to Ancient Greece. Our treatment of it, however, is more recent and was originally made possible with the help of man's best friend. Due to physiological traits shared with humans, dogs have saved countless lives through the discovery of insulin. Duncan C. Ferguson shares the story of the canine's great contribution to man -- and how we can all

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6:19

The history of the world according to cats -...

TED-Ed ·

2026/10/11

Sign up for our newsletter and never miss an animation: http://bit.ly/TEDEdNewsletterUploaded 03-01-19View full lesson: https://ed.ted.com/lessons/the-history-of-the-world-according-to-cats-eva-maria-geiglIn ancient times, wildcats were fierce carnivorous hunters. And unlike dogs, who have undergone centuries of selective breeding, modern cats are genetically very similar to ancient cats. How did these solitary, fierce predators become our sofa sidekicks? Eva-Maria Geigl traces the domestication of

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7:10

What happens when you remove the hippocampus? - Sam Kean

TED-Ed ·

2026/10/11

View full lesson: http://ed.ted.com/lessons/what-happens-when-you-remove-the-hippocampus-sam-keanUploaded 26-08-14When Henry Molaison (now widely known as H.M.) cracked his skull in an accident, he began blacking out and having seizures. In an attempt to cure him, daredevil surgeon Dr. William Skoville removed H.M.'s hippocampus. Luckily, the seizures did go away — but so did his long-term memory! Sam Kean walks us through this astonishing medical case, detailing everything H.M. taught us about the

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6:36

How Thor got his hammer - Scott A. Mellor

TED-Ed ·

2026/10/11

Sign up for our newsletter and never miss an animation: http://bit.ly/TEDEdNewsletterUploaded 07-01-19View full lesson: https://ed.ted.com/lessons/how-thor-got-his-hammer-scott-a-mellorLoki the mischief-maker, writhes in Thor’s iron grip. The previous night, he’d snuck up on Thor’s wife and shorn off her beautiful hair. To fix what he’d done, Loki rushes to the dwarves and tricks them into making gifts for the gods. Wanting to best their smith rivals, the dwarves make a set of golden treasures,

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6:55

Feedback loops: How nature gets its rhythms -...

TED-Ed ·

2026/10/11

View full lesson: http://ed.ted.com/lessons/feedback-loops-how-nature-gets-its-rhythms-anje-margriet-neutelUploaded 25-08-14While feedback loops are a bummer at band practice, they are essential in nature. What does nature’s feedback look like, and how does it build the resilience of our world? Anje-Margriet Neutel describes some common positive and negative feedback loops, examining how an ecosystem’s many loops come together to make its ‘trademark sound.’Lesson by Anje-Margriet Neutel, animation

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7:09

Can you survive nuclear fallout? - Brooke Buddemeier...

TED-Ed ·

2026/10/11

Explore the possibility of surviving a nuclear explosion and dig into a scientifically supported plan of action in case of a detonation. Uploaded 08-01-19--Nuclear weapons are some of the most powerful tools of destruction on Earth, and the full scope of a nuclear detonation is almost unimaginable. However, there is a scientifically supported plan of action that could save thousands of lives. What is this plan, and what exactly would it protect us from? Brooke Buddemeier and Jessica S. Wieder

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7:08

What can Schrödinger's cat teach us about quantum...

TED-Ed ·

2026/10/10

View full lesson: http://ed.ted.com/lessons/what-can-schrodinger-s-cat-teach-us-about-quantum-mechanics-josh-samaniUploaded 21-08-14The classical physics that we encounter in our everyday, macroscopic world is very different from the quantum physics that governs systems on a much smaller scale (like atoms). One great example of quantum physics’ weirdness can be shown in the Schrödinger's cat thought experiment. Josh Samani walks us through this experiment in quantum entanglement. Lesson by Josh

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6:23

Can you solve the multiplying rabbits riddle? - Alex...

TED-Ed ·

2026/10/10

Sign up for our newsletter and never miss an animation: http://bit.ly/TEDEdNewsletterUploaded 10-01-19View full lesson: https://ed.ted.com/lessons/can-you-solve-the-multiplying-rabbits-riddle-alex-gendlerAfter years of experiments, you’ve finally created the pets of the future – nano-rabbits! They’re tiny, they’re fuzzy ... and they multiply faster than the eye can see. But a rival lab has sabotaged you, threatening the survival of your new friends. Can you figure out how to avert this hare-raising

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5:56

How do tornadoes form? - James Spann

TED-Ed ·

2026/10/10

View full lesson: http://ed.ted.com/lessons/how-do-tornadoes-form-james-spannUploaded 19-08-14Tornadoes are the most violent storms on Earth, with wind velocities that can exceed 200 miles per hour. How do these terrifying cyclones form? Meteorologist James Spann sheds light on the lifespan of tornadoes as they go from supercell thunderstorms to terrible twisters before eventually dissolving back into thin air.Lesson by James Spann, animation by Província Studio. Learn more about your ad choices

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6:08

The truth about electroconvulsive therapy (ECT) -...

TED-Ed ·

2026/10/10

Sign up for our newsletter and never miss an animation: http://bit.ly/TEDEdNewsletterUploaded 14-01-19View full lesson: https://ed.ted.com/lessons/the-truth-about-electroconvulsive-therapy-ect-helen-m-farrellIn 1982, a young nurse was suffering from severe, unrelenting depression. She couldn’t work, socialize or concentrate. One controversial treatment changed everything: after two courses of electroconvulsive therapy (ECT) her symptoms lifted. So what exactly is electroconvulsive therapy and why is

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5:57

The past, present, and future of the bubonic plague -...

TED-Ed ·

2026/10/10

View full lesson: http://ed.ted.com/lessons/the-past-present-and-future-of-the-bubonic-plague-sharon-n-dewitteUploaded 18-08-14The bubonic plague, which killed around 1/5 of the world’s population in the 14th century, is still around today -- but it now claims only a few thousand lives each year. How did that number shrink so drastically? Sharon N. DeWitte investigates the causes and effects of the black death and explains how knowing this information can help us prepare for any future outbreaks of

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5:54

The myth of Pandora’s box - Iseult Gillespie

TED-Ed ·

2026/10/10

Find out how students can share their ideas as TED Talks here: http://bit.ly/2zpAQUcUploaded 15-01-19View full lesson: https://ed.ted.com/lessons/the-myth-of-pandora-s-box-iseult-gillespiePandora was the first mortal woman, breathed into being by Hephaestus, god of fire. The gods gave her gifts of language, craftsmanship and emotion. From Zeus she received two gifts: the trait of curiosity and a heavy box screwed tightly shut -- never to be opened. But what treasure could never be seen by human

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4:47

How do you know you exist? - James Zucker

TED-Ed ·

2026/10/09

View full lesson: http://ed.ted.com/lessons/how-do-you-know-you-exist-james-zuckerUploaded 14-08-14How do you know you’re real? Is existence all just a big dream? Has some mad scientist duped us into simply believing that we exist? James Zucker investigates all of these questions (and more) in this mind-boggling tribute to René Descartes’s "Meditations on First Philosophy."Lesson by James Zucker, animation by Stretch Films, Inc. Learn more about your ad choices. Visit megaphone.fm/adchoices Learn

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6:08

A day in the life of a Mongolian queen - Anne F....

TED-Ed ·

2026/10/09

Sign up for our newsletter and never miss an animation: http://bit.ly/TEDEdNewsletterUploaded 17-01-19View full lesson: https://ed.ted.com/lessons/a-day-in-the-life-of-a-mongolian-queen-anne-f-broadbridgeAs dawn breaks over a moveable city of ten thousand yurts, Queen Boraqchin readies her kingdom for departure to their summer camping grounds. While her husband, the grandson of Genghis Khan, is out raiding, she juggles the duties of managing flocks, family and a city of thousands. Anne F

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8:03

How optical illusions trick your brain - Nathan S....

TED-Ed ·

2026/10/09

View full lesson: http://ed.ted.com/lessons/how-optical-illusions-trick-your-brain-nathan-s-jacobsUploaded 12-08-14Optical illusions are images that seem to trick our minds into seeing something different from what they actually are. But how do they work? Nathan S. Jacobs walks us through a few common optical illusions and explains what these tricks of the eye can tell us about how our brains assemble visual information into the 3D world we see around us. Lesson by Nathan S. Jacobs, animation by

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6:20

Why should you read “Fahrenheit 451”? - Iseult Gillespie

TED-Ed ·

2026/10/09

Sign up for our newsletter and never miss an animation: http://bit.ly/TEDEdNewsletterUploaded 22-01-19View full lesson: https://ed.ted.com/lessons/why-should-you-read-fahrenheit-451-iseult-gillespieRay Bradbury’s novel imagines a world where books are banned- and possessing, let alone reading them, is forbidden.The protagonist, Montag, is a fireman responsible for destroying what remains. The story raises the question: how can you preserve your mind in a society where free will, self-expression and

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5:43

The secret lives of baby fish - Amy McDermott

TED-Ed ·

2026/10/09

View full lesson: http://ed.ted.com/lessons/the-secret-lives-of-baby-fish-amy-mcdermottUploaded 11-08-14Coral reef fish, like the yellow tang surgeonfish, begin life in a fascinating and weird way – as tiny floating larvae! These babies are capable of drifting thousands of miles on ocean currents, far from the reefs where they were born. Amy McDermott describes how these tiny trekkers travel across vast oceans, searching for the far-flung reefs they will one day call home.Lesson by Amy McDermott,

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