TED-Ed

What makes crystals grow into their signature shapes? Dig into the atomic patterns and unique properties of crystals.

Uploaded 18-06-19

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Many crystals have signature shapes— like the cascade of pointed quartz or a pile of galena cubes. Every crystal’s atoms have a defining feature: their organized, repeating pattern. The pattern isn't restricted to minerals- sand, ice, metals and DNA also have crystalline structures. So what causes them to grow into these shapes again and again? Graham Baird dives into the unique properties of crystals.

Lesson by Graham Baird, directed by Franz Palomares.

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View full lesson: https://ed.ted.com/lessons/how-do-crystals-work-graham-baird

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Explore the possibilities and challenges of what a vegetarian world could look like if we all immediately stopped eating meat.

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Imagine if a wizard of meatless dining suddenly appeared on Earth and with one wave of a wand wiped away all meat from our shelves— along with any desire to eat it. Farm animals destined for food vanish, whisked away to another planet. What happens in the following days, years, and even millennia? Carolyn Beans explores what a vegetarian world could look like.

Lesson by Carolyn Beans, directed by Mitchelle Tamariz.

This video made possible in collaboration with Speed & Scale
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A special thanks to Marco Springmann who provided information and insights for the development of this video.

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View full lesson: https://ed.ted.com/lessons/what-would-happen-if-everyone-stopped-eating-meat-tomorrow-carolyn-beans
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Animator's website: https://www.mitchelletamariz.com
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Dive into the Egyptian myth of Isis, a powerful goddess protecting her son from her murderous brother with the help of seven scorpions.

Uploaded 02-03-20

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A woman in rags emerged from a swamp flanked by seven giant scorpions and approached a magnificent mansion to beg for food. But the mistress of the house took one look at her grimy clothes and unusual companions and slammed the door in her face. Little did the mistress know the woman was no ordinary beggar, but the most powerful goddess in Egypt. Alex Gendler details the myth of Isis.

Lesson by Alex Gendler, directed by Bren López Zepeda.

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View full lesson: https://ed.ted.com/lessons/the-egyptian-myth-of-isis-and-the-seven-scorpions-alex-gendler

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Why do medical implants like insulin pumps and prosthetic knees need replacement? Explore how the immune system fights implants and how new devices are trying to help.

Uploaded 17-06-19

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Insulin pumps improve the lives of millions of people with diabetes around the world by monitoring blood sugar, delivering insulin, and preventing the need for constant finger-pricking. But there’s a catch: they’re temporary. And it’s not only insulin pumps that have this problem, but all bodily implants. Why is that? Kaitlyn Sadtler details how our immune system reacts to foreign bodies.

Lesson by Kaitlyn Sadtler, directed by Andrew Foerster.

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View full lesson: https://ed.ted.com/lessons/your-body-vs-implants-kaitlyn-sadtler

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Download the Audible Original podcast “Moriarty: The Silent Order” and support TED-Ed's nonprofit mission: https://www.audible.com/ted-ed

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One day in the fall, you called upon your friend, Sherlock Holmes, and found him in conversation with Jabez Wilson. Wilson had been working for the mysterious League of Red-Headed Men. Today, he arrived at work to find the group had disappeared, and now turns to Holmes to make sense of the events. Follow the detective and see if you can solve this adaptation of one of Sherlock’s most famous cases.

Lesson by Alex Rosenthal, directed by Skirmanta Jakaitė, Art Shot.

This video made possible in collaboration with Audible
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Explore the history of humanity’s deadliest diseases, and find out how our progress and innovation exposed us to new pathogens.

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Since humanity’s earliest days, we’ve been plagued by countless disease-causing pathogens. Invisible and persistent, these microorganisms and the illnesses they incur have killed more humans than anything else in history. But which disease has been the deadliest? Dan Kwartler digs into how human progress and innovation throughout history exposed us to surprising new maladies.

Lesson by Dan Kwartler, directed by BASA.

This video made possible in collaboration with Gates Ventures
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View full lesson: https://ed.ted.com/lessons/the-diseases-that-changed-humanity-forever-dan-kwartler
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Uploaded 06-11-18

View full lesson: https://ed.ted.com/lessons/how-far-would-you-have-to-go-to-escape-gravity-rene-laufer

Every star, black hole, human being, smartphone and atom are all constantly pulling on each other due to one force: gravity. So why don’t we feel pulled in billions of different directions? And is there anywhere in the universe where we'd be free of its pull? Rene Laufer details the inescapability of gravity.

Lesson by Rene Laufer, directed by TED-Ed.

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Explore the Amazon rainforest’s flying rivers, and dig into why these invisible waterways are essential to life on Earth.

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The largest rainforest in the world, the Amazon, exists between two rivers — but not in the way you might think. At ground level, the Amazon River and its tributaries weave their path. But above the canopy, bigger waterways are on the move. These flying rivers are almost invisible, but are essential to life on Earth. Iseult Gillespie explores how this crucial system keeps the rainforest alive.

Lesson by Iseult Gillespie, directed by Upamanyu Bhattacharyya, Otter Studios.

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How can we begin to understand the way the brain works? The same way we begin to understand a city: by making a map. In this visually stunning talk, Allan Jones shows how his team is mapping which genes are turned on in each tiny region, and how it all connects up.

Uploaded 09-08-13

Talk by Allan Jones.



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Travel into the brain to see how its network of neurons transmit your thoughts and what factors determine how quickly you think.

Uploaded 16-11-20

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Your mortal enemy has captured you and hooked you up to a bizarre experiment. He’s extended your nervous system with one very long neuron to a target about 70 meters away. At some point, he’s going to fire an arrow. If you can then think a thought to the target before the arrow hits it, he’ll let you go. So who wins that race? Seena Mathew examines the speed of thought.

Lesson by Seena Mathew, directed by Andrew Foerster.

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