TED-Ed

Political prisoners aren't the only ones being tortured -- the vast majority of judicial torture happens in ordinary cases, even in 'functioning' legal systems. Social activist Karen Tse shows how we can, and should, stand up and end the use of routine torture.

Uploaded 09-08-13

Talk by Karen Tse.



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Dig into the science of how anabolic steroids and their recreational use can affect your body, organs and brain.

Uploaded 09-11-20

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Steroids. They’ve caused global scandals. They’re banned in most athletic competitions. Yet the same properties that help elite athletes and bodybuilders improve performance also make steroids valuable for treating many illnesses and injuries, such as AIDS and cancer. So if steroids are used as medicine, they must be safe to use recreationally, right? Anees Bahji explores the effects of steroids.

Lesson by Anees Bahji, directed by Cris Wiegandt.

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View full lesson: https://ed.ted.com/lessons/how-do-steroids-affect-your-muscles-and-the-rest-of-your-body-anees-bahji
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Animator's website: https://criswiegandt.com
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View full lesson: http://ed.ted.com/lessons/a-different-way-to-visualize-rhythm-john-varney

Uploaded 20-10-14

In standard notation, rhythm is indicated on a musical bar line. But there are other ways to visualize rhythm that can be more intuitive. John Varney describes the ‘wheel method’ of tracing rhythm and uses it to take us on a musical journey around the world.

Lesson by John Varney, animation by TED-Ed.



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Discover the dormant army of billions of cicadas that emerge from underground every 13 or 17 years to molt, mate, and die.

Uploaded 05-09-13

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Every 13 or 17 years, billions of cicadas emerge from the ground to molt, mate and die. Adult cicadas only live a few weeks above ground, but you'd be hard pressed to ignore them -- they are extremely loud! Rose Eveleth explains everything you need to know about these noisy insects, admitting that there's still some things we just don't understand.

Lesson by Rose Eveleth, animation by Eli Enigenburg.

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View full lesson: http://ed.ted.com/lessons/cicadas-the-dormant-army-beneath-your-feet-rose-eveleth
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View full lesson: http://ed.ted.com/lessons/networking-for-the-networking-averse-lisa-green-chau

Networking can seem so hard -- but not if you have the right advice. Try taking advantage of weak ties; you never know what friend of a friend of a friend can aid you in your dreams. Lisa Green Chau outlines how being proactive and always saying yes can lead to future opportunities.

Lesson by Lisa Green Chau, animation by Cinematic Sweden.

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For love or money? Based on hundreds of interviews and his personal experience, Richard St. John suggests that passion, not money, is one of the key drivers of success.

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How can we use statistics to evaluate risk? Dig into the difference between relative risk and absolute risk and how each is used in the news.

Uploaded 25-02-20

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A new drug reduces the risk of heart attacks by 40%. Shark attacks are up by a factor of two. Drinking a liter of soda per day doubles your chance of developing cancer. These are all examples of a common way risk is presented in news articles, and can often be misleading. So how can we better evaluate risk? Gerd Gigerenzer explores the difference between relative and absolute risk.

Lesson by Gerd Gigerenzer, directed by Visorama.

Animator's website: https://www.visorama.tv/
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View full lesson: https://ed.ted.com/lessons/how-likely-is-a-shark-attack-gerd-gigerenzer

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View full lesson: http://ed.ted.com/lessons/the-infinite-life-of-pi-reynaldo-lopes

Uploaded 10-07-13

The ratio of a circle's circumference to its diameter is always the same: 3.14159... and on and on (literally!) forever. This irrational number, pi, has an infinite number of digits, so we'll never figure out its exact value no matter how close we seem to get. Reynaldo Lopes explains pi's vast applications to the study of music, financial models, and even the density of the universe.

Lesson by Reynaldo Lopes, animation by Igor Coric.



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Explore the science of what attracts mosquitos, and find out why mosquitos bite some people more than others.

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Some swear they’re cursed to be hunted by mosquitos while their close-by companions are regularly left unscathed. Are mosquitos really attracted to some people more than others? And if so, is there anything we can do about it? Maria Elena De Obaldia digs into what factors make people tasty targets for these pesky insects.

Lesson by Maria Elena De Obaldia, directed by Anton Bogaty.

This video made possible in collaboration with Gates Ventures
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View full lesson: https://ed.ted.com/lessons/do-mosquitoes-actually-bite-some-people-more-than-others-maria-elena-de-obaldia
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Animator's website: https://antonbogaty.com
Music: https://www.campstudio.co
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Uploaded 01-11-18

View full lesson: https://ed.ted.com/lessons/what-causes-heartburn-rusha-modi

Humans have been battling heartburn for hundreds, if not thousands, of years. But recently the incidence has risen, making it a common complaint worldwide. What causes this problem, and how can it be stopped? Rusha Modi details the causes and treatments of heartburn.

Lesson by Rusha Modi, directed by Kozmonot Animation Studio.

Thank you so much to our patrons for your support! Without you this video would not be possible! Chris, Megan Douglas, Barbara Smalley, Filip Dabrowski, Clair Chen, Vik Nagjee, Karen Goepen-Wee, Della Palacios, Bah Becerra, Marc Bilodeau, Ruby Solorzano, Ivan Tsenov, Claudia Mayfield, Yankai Liu, Duo Xu, Joy Love Om, Gi Nam Lee, Shawn Quichocho, Anika Westburg, Barun Padhy, Devin Harris, Tony Trapuzzano, Jason Weinstein, Kris Siverhus, Alexander Walls, Annamaria Szilagyi, Morgan Williams, Abhijit Kiran Valluri, Mandeep Singh, سلطان الخليفي, Marylise CHAUFFETON, Marvin Vizuett, Jayant Sahewal, Quinn Shen, Elizabeth Cruz, Elnathan Joshua Bangayan, Mullaiarasu Sundaramurthy, Jose Henrique Leopoldo e Silva, Dan Paterniti, Jerome Froelich, Tyler Yoshizumi, Martin Stephen, Justin Carpani, Khalifa Alhulail, Tejas Dc, Benjamin and Shannon Pinder, Srikote Naewchampa, Ex Foedus, Exal Enrique Cisneros Tuch and Ana Maria.



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