TED-Ed

Are black holes indestructible? Explore the theory of Hawking radiation, a process that could lead a black hole to gradually lose mass and evaporate.

Uploaded 16-05-19

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Black holes are among the most destructive objects in the universe. Anything that gets too close to a black hole, be it an asteroid, planet, or star, risks being torn apart by its extreme gravitational field. By some accounts, the universe may eventually consist entirely of black holes. But is there any way to destroy a black hole? Fabio Pacucci digs into the possibility.

Lesson by Fabio Pacucci, directed by Provincia Studio.

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View full lesson: https://ed.ted.com/lessons/can-a-black-hole-be-destroyed-fabio-pacucci

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Find out how a hatchetfish survives its daily journey from the depths of the ocean’s Twilight Zone to the resource-rich surface.

Uploaded 25-05-21

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You’re traveling deep beneath the ocean’s surface, where faint lights flicker and toothy grins flash. Your mission is to survive these depths and journey to the surface after sundown to feed. And as a hatchetfish, almost every other deep-sea creature is trying to eat you. Can you complete the quest? Philip Renaud and Kenneth Kostel share how to survive the ocean's Twilight Zone.

Lesson by Philip Renaud and Kenneth Kostel, directed by Cris Wiegandt.
Designed by Bárbara Fonseca
Sound design by Claudia Ioana Vasiliu
Narrated by Addison Anderson
Script Editing by Alex Gendler

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View full lesson: https://ed.ted.com/lessons/could-you-survive-the-real-twilight-zone-philip-renaud-and-kenneth-kostel
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Animator's website: https://criswiegandt.com
Educator's website: https://twilightzone.whoi.edu
Sound design: https://claudiavasiliu.cargo.site
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Learn the science behind how vaccines trigger an immune response and teach our bodies to recognize dangerous pathogens.

Uploaded 12-01-15

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The first ever vaccine was created when Edward Jenner, an English physician and scientist, successfully injected small amounts of a cowpox virus into a young boy to protect him from the related (and deadly) smallpox virus. But how does this seemingly counterintuitive process work? Kelwalin Dhanasarnsombut details the science behind vaccines.

Lesson by Kelwalin Dhanasarnsombut, animation by Cinematic.

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View full lesson: http://ed.ted.com/lessons/how-do-vaccines-work-kelwalin-dhanasarnsombut



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View full lesson: http://ed.ted.com/lessons/what-is-dyslexia-kelli-sandman-hurley

Uploaded 15-07-13

Dyslexia affects up to 1 in 5 people, but the experience of dyslexia isn't always the same. This difficulty in processing language exists along a spectrum -- one that doesn't necessarily fit with labels like "normal" and "defective." Kelli Sandman-Hurley urges us to think again about dyslexic brain function and to celebrate the neurodiversity of the human brain.

Lesson by Kelli Sandman-Hurley, animation by Marc Christoforidis.



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Discover what scientists have found buried in the Arctic permafrost, and find out the far-reaching effects of its melting.

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In June 2022, a gold miner in the Canadian Yukon made a remarkable discovery. While working on the traditional lands of the Tr’ondëk Hwëch’in First Nation, he uncovered the exceptionally well-preserved, frozen remains of a wooly mammoth calf that died 30,000 years ago. And this find isn’t the only of its kind. Brendan Rogers and Jessica Howard uncover secrets buried in the Arctic permafrost.

Lesson by Brendan Rogers and Jessica Howard, directed by Denys Spolitak.

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Animator's website: https://bit.ly/IckySketch
Music: https://www.workplaywork.com
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View full lesson: http://ed.ted.com/lessons/historical-role-models-amy-bissetta

Many notable American historical figures are considered role models -- but why? George Washington was devilishly smart, and Abraham Lincoln was a brave leader, but have you heard of Sybil Ludington or Beriah Green? Amy Bissetta expounds on the lessons of character we can learn from these historical giants, whether you've heard of them or not.

Lesson by Amy Bissetta, animation by Mark Phillips.

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Dig into the science of how cotton transforms from seed to fiber, and how these cotton fibers are used to make everything from fabrics, to currency, and fishing nets.

Uploaded 23-01-20

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Centuries ago, the Inca developed ingenuous suits of armor that could protect warriors from even the fiercest physical attacks. These hardy structures were made not from iron or steel, but rather something unexpectedly soft: cotton. Today cotton is used to make everything from fabric, to currency, diapers and fishing nets. Michael R. Stiff explores the science of what makes cotton so versatile.

Lesson by Michael R. Stiff, directed by WOW-HOW Studio.

Animator's website: https://wow-how.com/
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View full lesson: https://ed.ted.com/lessons/why-is-cotton-in-everything-michael-r-stiff

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Uploaded 14-08-18

View full lesson: https://ed.ted.com/lessons/what-really-happened-to-the-library-of-alexandria-elizabeth-cox

2,300 years ago, the rulers of Alexandria set out to fulfill a very audacious goal: to collect all the knowledge in the world under one roof. In its prime, the Library of Alexandria housed an unprecedented number of scrolls and attracted some of the Greek world’s greatest minds. But by the end of the 5th century CE, it had vanished. Elizabeth Cox details the rise and fall of this great building.

Lesson by Elizabeth Cox, directed by Inna Phillimore.

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In her talk, Rachel Botsman says we're "wired to share" -- and shows how websites like Zipcar and Swaptree are changing the rules of human behavior. (Filmed at TEDxSydney.)

Uploaded 17-07-13

Talk by Rachel Botsman.



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Alberto Cairo's clinics in Afghanistan used to close down during active fighting. Now, they stay open. In this powerful talk, Cairo tells the moving story of why -- and how he found humanity and dignity in the midst of war. (Filmed at TEDxRC2.)

Uploaded 15-08-13

Talk by Alberto Cairo.



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