TED-Ed

Discover the extraordinary regenerative powers of the axolotl, a salamander native to Mexico and one of science’s most studied animals.

Uploaded 22-06-21

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Axolotls are one of science’s most studied animals. Why, you ask? These extraordinary salamanders are masters of regeneration: they can flawlessly regenerate body parts ranging from amputated limbs and crushed spines to parts of their eyes and brains. So, how do they do it? And what other secrets are they keeping? Luis Zambrano explores the baffling biology of the axolotl.

Lesson by Luis Zambrano, directed by Lizete Upīte.

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View full lesson: https://ed.ted.com/lessons/these-salamanders-snack-on-each-other-but-don-t-die-luis-zambrano
Dig deeper with additional resources: https://ed.ted.com/lessons/these-salamanders-snack-on-each-other-but-don-t-die-luis-zambrano#digdeeper

Animator's website: https://lizete.berta.me
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Dig into the psychological benefits of positive self-talk, and find out when it can become problematic.

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Being caught talking to yourself can feel embarrassing, and some people even stigmatize this behavior as a sign of mental instability. But decades of research show that talking to yourself is completely normal; most if not all of us engage in some form of self-talk every day. So why do we talk to ourselves? And does what we say matter? Dig into the psychological benefits of positive self-talk.

Directed by Avi Ofer.

This video made possible in collaboration with Character Lab
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Animator's website: https://aviofer.com
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View full lesson: http://ed.ted.com/lessons/at-what-moment-are-you-dead-randall-hayes

Uploaded 11-12-14

For as far back as we can trace our existence, humans have been fascinated with death and resurrection. But is resurrection really possible? And what is the actual difference between a living creature and a dead body anyway? Randall Hayes delves into the scientific theories that seek to answer these age-old questions.

Lesson by Randall Hayes, animation by Anton Bogaty.



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Explore the history of the toilet and how waste management has evolved from from ancient Mesopotamia to modern day.

Uploaded 15-06-21

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On sunny days, citizens of ancient Rome could be found exchanging news and gossip while attending to more urgent business at the public latrines. Today, most cultures consider trips to the restroom to be a more private occasion. But even when going alone, our shared sewage infrastructure is one of the most pivotal inventions in human history. Francis de los Reyes shares the history of the toilet.

Lesson by Francis de los Reyes, directed by Igor Coric, Artrake Studio.

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Animator's website: https://www.artrake.com
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Trace the history of anesthesia from the 3rd century to today, and explore how doctors performed surgery before anesthetic drugs.

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The quest for anesthetics that could induce unconsciousness and enable more meticulous surgeries began around the early 3rd century CE. Before anesthesia was widely used, patients had to consciously endure every moment of surgery. So, what methods did doctors use before modern medicine caught up? Sally Frampton traces the history of anesthetic drugs.

Lesson by Sally Frampton, directed by Alexander Hellebaut.

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View full lesson: https://ed.ted.com/lessons/what-did-people-do-before-anesthesia-sally-frampton
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Animator's website: https://alexanderhellebaut.com
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Thank you so much to our patrons for your support! Without you this video would not be possible! Jaspar Carmichael-Jack, Michael Burton, VIVIANA A GARCIA BESNE, The Vernon's, Olha Bahatiuk, 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 and Gatsby Dkdc.

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Plunge into the ocean’s depths to take a closer look at the sea lion’s hunting skills, and to learn more about how climate change is affecting its habitat.

Uploaded 28-05-19

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Sunning themselves on rocks or waddling awkwardly across the beach, it’s easy to think of sea lions more as sea house cats. But don’t be fooled by their beachside behavior. Under the waves, sea lions are incredible endurance hunters, reaching speeds of 18 miles an hour and hunting for up to 30 hours at a time. Claire Simeone dives into what makes these majestic mammals such resourceful foragers.

Lesson by Claire Simeone, directed by Cabong Studios.

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View full lesson: https://ed.ted.com/lessons/the-lovable-and-lethal-sea-lion-claire-simeone

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Our medical systems are broken. Doctors are capable of extraordinary (and expensive) treatments, but they are losing their core focus: actually treating people. Doctor and writer Atul Gawande suggests we take a step back and look at new ways to do medicine -- with fewer cowboys and more pit crews.

Talk by Atul Gawande.

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Trace the history of popcorn, from its origins in the Americas to its explosion of popularity in the 20th century.

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Soft percussion and a toasty scent mark the violent transformation of tough seeds into cloud-like puffs. This is the almost magical process of popcorn-making. Dozens of kinds of popcorn are now grown in the US, with different strains assuming distinctive shapes when their kernels explode. So, how did we actually end up with this whimsical food? Andrew Smith traces the history of popcorn.

Lesson by Andrew Smith, directed by Mitchelle Tamariz.

This video made possible in collaboration with Marriott Hotels
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View full lesson: https://ed.ted.com/lessons/why-do-we-eat-popcorn-at-the-movies-andrew-smith
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Animator's website: https://www.mitchelletamariz.com
Music: https://www.campstudio.co
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Thank you so much to our patrons for your support! Without you this video would not be possible! 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, Eddy, Jay M, Constantino Victor Delgado, Andrea Galvagni, Andrew Tweddle and Laurel-Ann Rice.

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View full lesson: http://ed.ted.com/lessons/the-good-news-of-the-decade-hans-rosling

Uploaded 11-08-13

Hans Rosling reframes 10 years of UN data with his spectacular visuals, lighting up an astonishing -- mostly unreported -- piece of front-page-worthy good news: We're winning the war against child mortality. Along the way, he debunks one flawed approach to stats that blots out such vital stories. (Filmed at TEDxChange.)

Talk by Hans Rosling.



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As you surf the Web, information is being collected about you. Web tracking is not 100% evil -- personal data can make your browsing more efficient; cookies can help your favorite websites stay in business. But, says Gary Kovacs, it's your right to know what data is being collected about you and how it affects your online life. He unveils a Firefox add-on to do just that.

Talk by Gary Kovacs.

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