TED-Ed

View full lesson: http://ed.ted.com/lessons/the-danger-of-science-denial-michael-specter

Vaccine-autism claims, "Frankenfood" bans, the herbal cure craze: All point to the public's growing fear (and, often, outright denial) of science and reason, says Michael Specter. He warns the trend spells disaster for human progress.

Talk by Michael Specter.

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On any given day we're lied to from 10 to 200 times, and the clues to detect those lie can be subtle and counter-intuitive. Pamela Meyer, author of Liespotting, shows the manners and "hotspots" used by those trained to recognize deception -- and she argues honesty is a value worth preserving.

Uploaded 09-08-13

Talk by Pamela Meyer.



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Explore the science behind how gas masks work, and how the technology protects us from airborne threats and pollutants.

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You might think of gas masks as clunky military-looking devices. But in the near future, we may need to rely on these filters as part of our everyday lives. In addition to emerging diseases, wildfire frequency has more than tripled, and climate change has increased toxic ground level ozone. So how do these masks work, and can they protect us from airborne threats? George Zaidan investigates.

Lesson by George Zaidan, directed by Michael Kalopaidis, Zedem Media.

This video made possible in collaboration with Speed & Scale
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View full lesson: https://ed.ted.com/lessons/how-do-gas-masks-actually-work-george-zaidan
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Animator's website: https://www.zedemanimations.com
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Download a free audiobook version of "Slaughterhouse Five" and support TED-Ed's nonprofit mission: https://adbl.co/2DPI5Ys

Uploaded 29-11-18

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Kurt Vonnegut found the tidy, satisfying arcs of many stories at odds with reality, and he set out to explore the ambiguity between good and bad fortune in his own novels. He tried to make sense of human behavior by studying the shapes of stories — ditching straightforward chronologies and clear-cut fortunes. Mia Nacamulli dives into the sometimes dark, yet hopeful works of Vonnegut.

Lesson by Mia Nacamulli, directed by TED-Ed.

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"The world needs you, badly," begins celebrated biologist E.O. Wilson in his letter to a young scientist. Previewing his upcoming book, he gives advice collected from a lifetime of experience -- reminding us that wonder and creativity are the center of the scientific life. (Filmed at TEDMED.)

Uploaded 05-07-13

Talk by E.O. Wilson.



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Get to know the legend of the king known as Prester John, whose myth would impact the decisions of European leaders for 400 years.

Uploaded 19-03-20

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In 1165, copies of a strange letter began to circulate throughout Europe. It spoke of a fantastical realm, containing the Tower of Babel and the Fountain of Youth— all ruled over by the letter’s mysterious author: Prester John. Who was this powerful ruler, and was he even real? Matteo Salvadore shares the legend of a mythical king who impacted the decisions of European leaders for 400 years.

Lesson by Matteo Salvadore, directed by Anna Nowakowska.

Educator's website: https://aus.academia.edu/MatteoSalvadore
Animator's website: https://animationworkshop.via.dk/
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View full lesson: https://ed.ted.com/lessons/the-imaginary-king-who-changed-the-real-world-matteo-salvadore

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What gives opals their signature shimmering colors? Dig into the science of the gemstone’s formation, millions of years in the making.

Uploaded 03-12-20

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In November 1986, Australian miners climbed Lunatic Hill and bored 20 meters into the Earth. They were rewarded with a fist-sized, record breaking gemstone, which they named the Hailey’s Comet opal. Thanks to a characteristic called “play of color,” no two opals look the same. So what causes these vibrant displays? Jeff Dekofsky digs into the rock’s shimmering, dancing displays of light.

Lesson by Jeff Dekofsky, directed by Ivana Bošnjak and Thomas Johnson.

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View full lesson: https://ed.ted.com/lessons/the-most-colorful-gemstones-on-earth-jeff-dekofsky
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Sound design: https://www.campstudio.co/
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View full lesson: http://ed.ted.com/lessons/the-world-s-english-mania-jay-walker

Jay Walker explains why two billion people around the world are trying to learn English. He shares photos and spine-tingling audio of Chinese students rehearsing English -- "the world's second language" -- by the thousands.

Talk by Jay Walker.

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View full lesson: http://ed.ted.com/lessons/where-do-genes-come-from-carl-zimmer

Uploaded 22-09-14

When life emerged on Earth about 4 billion years ago, the earliest microbes had a set of basic genes that succeeded in keeping them alive. In the age of humans and other large organisms, there are a lot more genes to go around. Where did all of those new genes come from? Carl Zimmer examines the mutation and multiplication of genes.

Lesson by Carl Zimmer, animation by TOGETHER.



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View full lesson: http://ed.ted.com/lessons/how-to-organize-add-and-multiply-matrices-bill-shillito

When you're working on a problem with lots of numbers, as in economics, cryptography or 3D graphics, it helps to organize those numbers into a grid, or matrix. Bill Shillito shows us how to work with matrices, with tips for adding, subtracting and multiplying (but not dividing!).

Lesson by Bill Shillito, animation by The Leading Sheep Studios.

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