TED-Ed

Dive into the life of one of Ancient Rome’s most powerful figures, Hypatia of Alexandria, a renowned scholar and political advisor to the city's leaders.

Uploaded 01-08-19

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In the city of Alexandria in 415 CE, the bishop and the governor were in a fight. It started with a disagreement over the behavior of a militia of monks, and ended with an accusation of witchcraft leveled against one of the most powerful figures in the city: Hypatia, philosopher and advisor to the city’s leaders. Who was Hypatia and why was she deemed a threat? Soraya Field Fiorio investigates.

Lesson by Soraya Field Fiorio, directed by Biljana Labovic.
Animation by Elsa Esteban https://www.elsaesteban.com/

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View full lesson: https://ed.ted.com/lessons/the-murder-of-ancient-alexandria-s-greatest-scholar-soraya-field-fiorio

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Learn about the life of World War II spy Noor Inayat Khan and how she worked with the French Resistance to build the network that defeated the Nazis.

Uploaded 06-08-19

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In May 1940, with the German army ready to occupy Paris, Noor Inayat Khan was faced with a difficult choice: stand on the sidelines or join the Allied forces fighting the Nazis. After witnessing the devastation across Europe, she travelled to England to learn the art of espionage. Shrabani Basu details how a pacifist turned spy helped build the resistance that toppled a fascist regime.

Lesson by Shrabani Basu, directed by Franz Palomares.

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View full lesson: https://ed.ted.com/lessons/from-pacifist-to-spy-wwii-s-surprising-secret-agent-shrabani-basu

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After a natural disaster strikes, there's only a tiny window of opportunity to rally effective recovery efforts before the world turns their attention elsewhere. Who should be in charge? When a freak tornado hit their hometown, sisters Caitria and Morgan O'Neill -- just 20 and 24 at the time -- took the reins and are now teaching others how to do the same. (Filmed at TEDxBoston.)

Uploaded 29-08-13

Talk by Caitria and Morgan O'Neill.



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Temple Grandin, diagnosed with autism as a child, talks about how her mind works -- sharing her ability to "think in pictures," which helps her solve problems that neurotypical brains might miss. She makes the case that the world needs people on the autism spectrum: visual thinkers, pattern thinkers, verbal thinkers, and all kinds of smart geeky kids.

Talk by Temple Grandin.

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View full lesson: http://ed.ted.com/lessons/corruption-wealth-and-beauty-the-history-of-the-venetian-gondola-laura-morelli

Uploaded 04-09-14

It’s hard to imagine Venice without the curious, banana-shaped gondolas that glide down the canals. How did these boats come to be the trademark transportation of Venice? Laura Morelli details the history of the gondola, explaining why these boats were needed, the painstaking process by which they were made and why they have slowly begun to fade from the once-crowded canals.

Lesson by Laura Morelli, animation by Andrew Foerster.



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A whirlwind of energy and ideas, Stephen Ritz is a teacher in New York's tough South Bronx, where he and his kids grow lush gardens for food, greenery -- and jobs. Just try to keep up with this New York treasure as he spins through the many, many ways there are to grow hope in a neighborhood many have written off, or in your own. (Filmed at TEDxManhattan.)

Uploaded 29-08-13

Talk by Stephen Ritz.



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Explore the chemistry behind what makes kevlar so strong, and how this essential synthetic fiber was invented.

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By 1975, Richard Davis had been shot at close range 192 times. But not only was he completely healthy, each of those bullets were part of a demonstration to sell his new product: the bulletproof vest. So, how does such a light, flexible piece of clothing stop a bullet? The secret was a synthetic fiber material invented a decade earlier. Max G. Levy explores the incredible strength of kevlar.

Lesson by Max G. Levy, directed by Vitalii Nebelskyi, and action creative agency.

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Discover how the English Channel Tunnel was built and the engineering challenges of building a 200 kilometer long tunnel underwater.

Uploaded 30-03-20

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Flanked by two powerful nations, the English Channel has long been one of the world’s most important maritime passages. Yet for most of its history, crossing was a dangerous prospect. Engineers proposed numerous plans for spanning the gap, including a design for an underwater passage more than twice the length of any existing tunnel. Alex Gendler details the creation of the Channel Tunnel.

Lesson by Alex Gendler, directed by Studio Kimchi.

Animator's website: https://studiokimchi.com/
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Within the periodic table loom many potential hazardous elements. Some elements are dangerous due to their toxicity. Others are dangerous because of how they respond, react, or even explode in the outside environment. And perhaps the most threatening elements are those that silently emit energy. So, which substances on the periodic table are the most dangerous? Shannon Odell investigates.

Lesson by Shannon Odell, directed by Anton Bogaty.

This video made possible in collaboration with Brilliant
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Do you ever feel tired? Overwhelmed? Depressed? Do you have headaches, dizziness, cramps, difficulty breathing? From 300 BCE to the 1900s, if you answered yes to any of these questions and you had a uterus, a doctor would likely diagnose you with hysteria. So, where did this medical diagnosis come from? And why did it persist for so long? Mark S. Micale traces the history of the catch-all term.

Lesson by Mark S. Micale, directed by Laura Jayne Hodkin.

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