TED-Ed

Dig into the Irish myth of lovers Gráinne and Diarmuid, and follow their journey as they flee from her betrothed, Fionn.

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Gráinne, princess of Tara and bride-to-be, was furious. She had thought she was betrothed to a young soldier, bold and brilliant enough to be her equal. Yet it soon became clear she was expected to marry Fionn, a warrior far past his prime. Not willing to suffer this insult, Gráinne decided that before the wedding she would exact her revenge. Iseult Gillespie shares the Irish myth of Fionn's fury.

Lesson by Iseult Gillespie, directed by Efa Blosse-Mason.

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View full lesson: https://ed.ted.com/lessons/love-vs-honor-the-irish-myth-of-diarmuid-s-betrayal-iseult-gillespie
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Animator's website: http://www.efabmanimation.com and http://paolorussoanimation.weebly.com
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Investigate the science behind how doctors use radioactive drugs and PET scans to detect and diagnose diseases like Alzheimer’s and cancer.

Uploaded 19-03-19

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Is there a way to detect diseases like cancer and Alzheimer’s before they advance too far? Doctors are using injected radioactive drugs that circulate through the body and act as a beacon for PET scanners. These diagnostic tools can detect the spread of diseases before they can be spotted with other types of imaging. So how exactly does this work, and is it safe? Pedro Brugarolas investigates.

Lesson by Pedro Brugarolas, directed by Artrake Studio.

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View full lesson: https://ed.ted.com/lessons/why-do-hospitals-have-particle-accelerators-pedro-brugarolas

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View full lesson: http://ed.ted.com/lessons/the-case-against-good-and-bad

Don't take the easy route! Instead, use this little trick to improve your writing -- let go of the words "good" and "bad," and push yourself to illustrate, elucidate and illuminate your world with language.

Lesson by Marlee Neel, animation by The STUDIO.

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Learn more at https://brilliant.org/TedEd

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In 1900, Greek divers stumbled upon a 2,000-year-old shipwreck whose contents would shake our understanding of the ancient world. Among the remains were fragments of mangled wood and corroded metal, which archaeologists soon realized were parts of the oldest geared device ever discovered — and humankind’s first computer. So, how did it work? Max G. Levy explains the Antikythera mechanism.

Lesson by Max G. Levy, directed by Vicente Numpaque, Hernando Bahamon, Globizco Studios.

This video made possible in collaboration with Brilliant
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View full lesson: https://ed.ted.com/lessons/decoding-the-secrets-of-the-antikythera-mechanism-max-g-levy
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Animator's website: https://www.globizcostudios.com
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Thank you so much to our patrons for your support! Without you this video would not be possible! Jesús Bíquez Talayero, Chels Raknrl, Sai Pranavi Jonnalagadda, Stuart Rice, Jing Chen, Vector-Dopamine math, Jasper Song, Giorgio Bugnatelli, Chardon, Eddy Trochez, OnlineBookClub.org, Eric Shear, Leith Salem, Omar Hicham, Adrian Rotaru, Brad Sullivan, Karen Ho, Niklas Frimberger, Hunter Manhart, Nathan Nguyen, Igor Stavchanskiy, James R DeVries, Grace Huo, Diana Huang, Chau Hong Diem, Orlellys Torre, Corheu, Thomas Mee, Maryann H McCrory, Blas Borde, John Hellmann, Poompak Meephian, Chuck Wofford, Adam Pagan, Wes Winn, Conder Shou, ntiger, Noname, Hansan Hu, David D, Mac Hyney, Keith Ellison, robin valero walters, Lynne Truesdale, Gatsby Dkdc, Matthew Neal, Denis Chon, Julian Oberhofer, Monte Carroll, and Eddy.

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View full lesson: http://ed.ted.com/lessons/james-balog-time-lapse-proof-of-extreme-ice-loss

Uploaded 17-08-13

Photographer James Balog shares new image sequences from the Extreme Ice Survey, a network of time-lapse cameras recording glaciers receding at an alarming rate, some of the most vivid evidence yet of climate change.

Talk by James Balog.



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View full lesson: http://ed.ted.com/lessons/marcus-du-sautoy-symmetry-reality-s-riddle

Uploaded 17-08-13

The world turns on symmetry -- from the spin of subatomic particles to the dizzying beauty of an arabesque. But there's more to it than meets the eye. Here, Oxford mathematician Marcus du Sautoy offers a glimpse of the invisible numbers that marry all symmetrical objects. Oxford's newest science ambassador Marcus du Sautoy is also author of The Times' Sexy Maths column. He'll take you footballing with prime numbers, whopping symmetry groups, higher dimensions and other brow-furrowers.

Talk by Marcus du Sautoy.



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View full lesson: http://ed.ted.com/lessons/an-exercise-in-time-perception-matt-danzico

Why is that some experiences feel like they last forever, while others fly by? We tend to miscalculate the time it takes to engage in novel activities due to the influence of memories. Matt Danzico explains why your childhood feels like it lasted forever and why that beach vacation seemed like two months rather than two weeks.

Lesson by Matt Danzico, animation by London Squared Productions.

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Puzzle through this classic ethical dilemma and decide: does your upbringing affect your moral responsibility for your actions?

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Jo the First is a ruthless dictator who rules with an iron fist. To most onlookers, his rule appears cruel and unjust. But for his beloved son JoJo, this life is all he’s ever known and he grows up to inherit his father’s role and style of rule. Given JoJo’s unusual upbringing, does he bear full moral responsibility for his actions? Michael Vazquez and Sarah Stroud dig into this ethical dilemma.

Lesson by Michael Vazquez and Sarah Stroud, directed by Skirmanta Jakaitė, Art Shot.

This video was produced in collaboration with the Parr Center for Ethics, housed within the renowned Philosophy Department at the University of North Carolina at Chapel Hill. The Parr Center is committed to integrating abstract work in ethical theory with the informed discussion of practical ethical issues, and prides itself on the development of innovative and inclusive approaches to moral and civic education.

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View full lesson: https://ed.ted.com/lessons/the-infamous-jojo-thought-experiment-michael-vazquez-and-sarah-stroud
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Animator's website: https://artshot.lt/artshot
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View full lesson: http://ed.ted.com/lessons/how-do-pain-relievers-work

Some people take aspirin or ibuprofen to treat everyday aches and pains, but how exactly do the different classes of pain relievers work? Learn about the basic physiology of how humans experience pain, and the mechanics of the medicines we've invented to block or circumvent that discomfort.

Lesson by George Zaidan, animated by Augenblick Studios.

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Explore the 5 most common misconceptions about the Viking Age, and find out what living as a Viking was actually like.

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The Viking Age. When medieval, horn-helmeted Scandinavian men ravaged Europe, scribbling mysterious runes and toasting their victories in goblets forged from enemy skulls before bidding farewell in fiery funerals. Except… that’s not quite how it went. So, what were the Vikings actually like? Stephanie H. Smith debunks common misconceptions about the time period.

Lesson by Stephanie H. Smith, directed by Avi Ofer.

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View full lesson: https://ed.ted.com/lessons/5-myths-about-vikings-that-everyone-believes-stephanie-honchell-smith
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Animator's website: https://aviofer.com
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