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Uploaded 18-10-18

View full lesson: https://ed.ted.com/lessons/why-can-t-some-birds-fly-gillian-gibb

Though the common ancestor of all modern birds could fly, many different bird species have independently lost their flight. Flight can have incredible benefits, especially for escaping predators, hunting and traveling long distances. But it also has high costs: consuming huge amounts of energy and limiting body size and weight. Gillian Gibb explores what makes birds give up the power of flight.

Lesson by Gillian Gibb, directed by Anton Bogaty.

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View full lesson: http://ed.ted.com/lessons/different-ways-of-knowing-daniel-tammet

Daniel Tammet has linguistic, numerical and visual synesthesia -- meaning that his perception of words, numbers and colors are woven together into a new way of perceiving and understanding the world. The author of "Born on a Blue Day," Tammet shares his art and his passion for languages in this glimpse into his beautiful mind.

Talk by Daniel Tammet

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Dig into the truth about piranhas and their feeding frenzies, and find out what would likely happen if you fell into their waters.

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You’re peering into the Amazon River when, suddenly, you lose your footing and fall. Piranhas dart about in the rapidly approaching water. So, are you doomed? Will your fall trigger a feeding frenzy that will skeletonize your body within minutes? Antonio Machado-Allison shares what we know about these purportedly ferocious fish.

Lesson by Antonio Machado-Allison, directed by Anton Bogaty.

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View full lesson: https://ed.ted.com/lessons/what-happens-when-you-fall-into-piranha-infested-waters-antonio-machado-allison
Dig deeper with additional resources: https://ed.ted.com/lessons/what-happens-when-you-fall-into-piranha-infested-waters-antonio-machado-allison#digdeeper

Animator's website: https://www.instagram.com/anton_bogaty
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Learn the history of Viking runes, the ancient Norse language of symbols that make up an alphabet called the futhark.

Uploaded 20-02-20

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With their navigational skills and advanced longships, the Vikings sustained their seafaring for over 300 years. But for all their might, they left few monuments. Instead, fragments of stone, bark and bone found in the sites of ancient settlements provide the keys to their culture. Many of these objects are inscribed with Old Norse written in runic letters. Jesse Byock explores the ancient language.

Lesson by Jesse Byock, directed by Lisa LaBracio.

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View full lesson: https://ed.ted.com/lessons/spells-threats-and-dragons-the-secret-messages-of-viking-runestones-jesse-byock

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Uploaded 22-10-18

View full lesson: https://ed.ted.com/lessons/the-princess-who-rewrote-history-leonora-neville

Anna Komnene, daughter of Byzantine emperor Alexios, spent the last decade of her life creating a 500-page history of her father’s reign called “The Alexiad.” As a princess writing about her own family, she had to balance her loyalty to her kin with her obligation to portray events accurately. Leonora Neville investigates this epic historical narrative.

Lesson by Leonora Neville, directed by Els Decaluwe.

Thank you so much to our patrons for your support! Without you this video would not be possible! Jen O'Hogan, Renu Balak, JY Kang, Anastasiia, Madee Lo, Arpita Singh, Karl Laius, Barbarossa , Tu-Anh Nguyen, Guy Hardy, Sebastiaan Vleugels, Joel Alfonso, Derya Goekcay, Brandy Sarver, Jose Arcadio Valdes Franco, Akinola Emmanuel, igor romanenko, Dian Atamyanov, Abhishek Bansal, Austin Randall, Jennifer Kurkoski, phkphk12321, Arlene Weston, Mehmet Yusuf Ertekin, Ten Cha, Les Howard, Kevin O'Leary, Francisco Leos, Robert Patrick, Jorge, Marcus Appelbaum, Alan Wilder, Amin Talaei, Mohamed Elsayed, Angel Pantoja, Eimann P. Evarola, Claire Ousey, Carlos H. Costa, Tariq Keblaoui, Bela Namyslik, Nick Johnson, Won Jang, Johnnie Graham, Junjie Huang, Harshita Jagdish Sahijwani, Amber Alexander, Yelena Baykova, Laurence McMillan, John C. Vesey and Karmi Nguyen.



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Are you an early bird or a night owl? Explore how your circadian system acts as an internal clock to keep your body functioning.

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An early bird rises with the sun, springing out of bed abuzz with energy. Meanwhile, a night owl groggily rises much later, not hitting their stride until late in the day. How many people are truly night owls or early birds? And are our sleep schedules predetermined at birth, or can we change them? Explore how our circadian systems act as internal clocks to keep our bodies functioning properly.

Directed by Avi Ofer.

A special thanks to Jamie M. Zeitzer, Ph.D who provided information and insights for the development of this video.

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View full lesson: https://ed.ted.com/lessons/can-you-change-your-sleep-schedule
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Animator's website: https://aviofer.com
Music: https://soundcloud.com/aim-music
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Download a free audiobook version of “The Song of Achilles" and support TED-Ed's nonprofit mission: https://www.audible.com/ted-ed

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Achilles, just slain in the Trojan War, arrives in the Underworld and is greeted by Sibyl of Cumae— a prophetess and also the realm’s local guide. Though it gets a bad rap, Sibyl is determined to prove to the newcomer that hell is actually a lovely place to live; bursting with historic charm and eccentric neighbors. Iseult Gillespie takes a tour of the Underworld and its most infamous inhabitants.

Lesson by Iseult Gillespie, directed by Arvind Singh Jeena, Nikhita Prabhudesai Jeena, Totem Creative.

This video made possible in collaboration with Audible
Learn more about how TED-Ed partnerships work: https://bit.ly/TEDEdPartners

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View full lesson: https://ed.ted.com/lessons/a-tour-of-the-ancient-greek-underworld-iseult-gillespie
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Animator's website: https://www.totemcreative.in
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Thank you so much to our patrons for your support! Without you this video would not be possible! Morgan Williams, Devin Harris, Pavel Zalevskiy, Karen Goepen-Wee, Filip Dabrowski, Barbara Smalley, Megan Douglas, Tim Leistikow, Ka-Hei Law, Hiroshi Uchiyama, Mark Morris, Misaki Sato, EdoKun, SookKwan Loong, Bev Millar, Lex Azevedo, Michael Aquilina, Jason A Saslow, Yansong Li, Cristóbal Moenne, Dawn Jordan, Prasanth Mathialagan, Samuel Doerle, David Rosario, Dominik Kugelmann - they-them, Siamak Hajizadeh, Ryohky Araya, Mayank Kaul, Christophe Dessalles, Heather Slater, Sandra Tersluisen, Zhexi Shan, Bárbara Nazaré, Andrea Feliz, Victor E Karhel, Sydney Evans, Latora, Noel Situ, emily lam, Sid, Niccolò Frassetto, Mana, I'm here because of Knowledge Fight Facebook group., Linda Freedman, Edgardo Cuellar, Jaspar Carmichael-Jack, Michael Burton, VIVIANA A GARCIA BESNE, The Vernon's and Olha Bahatiuk.

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View full lesson: http://ed.ted.com/lessons/try-something-new-for-30-days-matt-cutts

Is there something you've always meant to do, wanted to do, but just ... haven't? Matt Cutts suggests: Try it for 30 days. This short, lighthearted talk offers a neat way to think about setting and achieving goals.

Talk by Matt Cutts.

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Dig into the Rubber Terror, the period in which King Leopold II’s horrific regime in the Congo resulted in the deaths of 10 million people.

Uploaded 08-07-21

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In 1904, Chief Lontulu laid 110 twigs in front of a foreign commission. Every twig represented a person in his village who died because of King Leopold’s brutal regime in the Congo. His testimony joined hundreds of others to help bring an end to one of the greatest atrocities in human history. Georges Nzongola-Ntalaja details the horrific abuses of Leopold’s occupation and looting of the Congo.

Lesson by Georges Nzongola-Ntalaja, directed by Héloïse Dorsan Rachet.

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View full lesson: https://ed.ted.com/lessons/history-s-deadliest-king-georges-nzongola-ntalaja
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Animator's website: https://www.heloisedr.com and https://www.instagram.com/helo.dr/
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Download a free audiobook version of "A Brief History of Time" and support TED-Ed's nonprofit mission: https://adbl.co/2NWYjAh

Uploaded 23-10-18

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View full lesson: https://ed.ted.com/lessons/does-time-exist-andrew-zimmerman-jones

The earliest time measurements were observations of cycles of the natural world, using patterns of changes from day to night and season to season to build calendars. More precise time-keeping eventually came along to put time in more convenient boxes. But what exactly are we measuring? Andrew Zimmerman Jones contemplates whether time is something that physically exists or is just in our heads.


Lesson by Andrew Zimmerman Jones, directed by Nice Shoes.

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