TED-Ed

A skyrocketing demand for food means that agriculture has become the largest driver of climate change, biodiversity loss and environmental destruction. At TEDxTC Jonathan Foley shows why we desperately need to begin "terraculture" -- farming for the whole planet. (Filmed at TEDxTC.)

Uploaded 21-08-13

Talk by Jonathan Foley.



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Trace the history of bloodletting, a medical practice dating back to ancient Greece and its continued use into the 19th century.

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Bloodletting was a pervasive medical practice that dates as far back as ancient Greece and continued well into the 19th century. Physicians like Hippocrates believed bad health could be attributed to a fluid imbalance, and recommended bloodletting to help reset the body's balance. So, why did bloodletting stick around so long? Stephanie Honchell Smith digs into its popularity and shortcomings.

Lesson by Stephanie Honchell Smith, directed by Denys Spolitak.

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View full lesson: https://ed.ted.com/lessons/why-doctors-used-to-bleed-their-patients-stephanie-honchell-smith
Dig deeper with additional resources: https://ed.ted.com/lessons/why-doctors-used-to-bleed-their-patients-stephanie-honchell-smith/digdeeper

Animator's website: https://www.behance.net/denysspolitak/info
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Thank you so much to our patrons for your support! Without you this video would not be possible! Ophelia Gibson Best, Paul Schneider, Joichiro Yamada, Henrique Cassús, Karthik Cherala, Clarence E. Harper Jr., Vignan Velivela, Ana Maria, Exal Enrique Cisneros Tuch, Tejas Dc, Khalifa Alhulail, Martin Stephen, Jose Henrique Leopoldo e Silva, Mandeep Singh, Abhijit Kiran Valluri, 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, and Victor E Karhel.

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View full lesson: http://ed.ted.com/lessons/david-mccandless-the-beauty-of-data-visualization

David McCandless turns complex data sets, like worldwide military spending, media buzz, and Facebook status updates, into beautiful, simple diagrams that tease out unseen patterns and connections. Good design, he suggests, is the best way to navigate information glut -- and it may just change the way we see the world.

Talk by David McCandless.

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Teaching is both a science and an art, and many teachers around the world spend endless hours perfecting their professional practice. At TEDActive 2013, a few teachers from the United States offer some tricks of the trade they've learned (and continue to hone) along the way.

Uploaded 20-06-13

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Practice more problem-solving at https://brilliant.org/TedEd

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It’s moments after the Big Bang and you’re still reeling. You’re a particle of matter, amidst a chaotic stew of forces, fusion, and annihilation. If you’re lucky and avoid being destroyed by antimatter, you’ll be the seed of a future galaxy. Can you ensure that you’re the last particle standing? James Tanton shows how.

Lesson by James Tanton, directed by Igor Coric, Artrake Studio.

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View full lesson: https://ed.ted.com/lessons/can-you-survive-the-creation-of-the-universe-by-solving-this-riddle-james-tanton
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Thank you so much to our patrons for your support! Without you this video would not be possible! SookKwan Loong, Bev Millar, Lex Azevedo, Noa Shore, Michael Aquilina, Jason A Saslow, Dawn Jordan, Prasanth Mathialagan, Samuel Doerle, David Rosario, Dominik Kugelmann - they-them, Siamak H, Ryohky Araya, Mayank Kaul, Christophe Dessalles, Heather Slater, Sandra Tersluisen, Zhexi Shan, Bárbara Nazaré, Andrea Feliz, Victor E Karhel, Sydney Evans, Latora Slydell, Noel Situ, emily lam, Sid, Kent Logan, Alexandra Panzer, John Hellmann, Poompak Meephian, Chuck Wofford, Daniel Erickson, frank goto, Jayson Hauschild, J D Wallace, Marq Short, Chen Jun Xiang, Adam Pagan, Paul Schultz and Behzad Farhanieh.

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View full lesson: http://ed.ted.com/lessons/a-needle-in-countless-haystacks-finding-habitable-planets-ariel-anbar

Out of billions of galaxies and billions of stars, how do we find Earth-like habitable worlds? What is essential to support life as we know it? Ariel Anbar provides a checklist for finding life on other planets.

Lesson by Ariel Anbar, animation by TED-Ed.

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Would a mile-high skyscraper ever be possible? Explore the physics behind some of the tallest buildings and megastructures in the world.

Uploaded 07-02-19

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In 1956, architect Frank Lloyd Wright proposed a mile-high skyscraper, a building five times as high as the Eiffel Tower. While this massive tower was never built, today bigger and bigger buildings are going up around the world. How did these impossible ideas turn into architectural opportunities? Stefan Al explains how these megastructures became fixtures of our city skylines.

Lesson by Stefan Al, directed by TED-Ed.

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View full lesson: https://ed.ted.com/lessons/will-there-ever-be-a-mile-high-skyscraper-stefan-al

Thank you so much to our patrons for your support! Without you this video would not be possible! Rodrigo Carballo, Boytsov Ilya, EdoKun, Misaki Sato, Craig Sheldon, Andrew Bosco, Catherine Sverko, Nik Maier, Mark Morris, Adi V, Peter Liu, Leora Allen, Hiroshi Uchiyama, Michal Salman, Gilly, Ka-Hei Law, Maya Toll, Ricardo Rendon Cepeda, Renhe Ji, Andrés Melo Gámez, Tim Leistikow, Shawar Khan, Chris, Megan Douglas, Barbara Smalley, Filip Dabrowski, Joe Giamartino, Clair Chen, Vik Nagjee, Karen Goepen-Wee, Della Palacios, Stephanie Perozo, Marc Bilodeau, Ivan Tsenov, Claudia Mayfield, Pavel Zalevskiy, Yankai Liu, Duo Xu, Ghassan Alhazzaa, Miloš Stevanović, Joy Love Om, Gi Nam Lee, Shawn Quichocho, Anika Westburg, Brandy Jones, Devin Harris, Tony Trapuzzano, Jason Weinstein, Kris Siverhus and Alexander Walls.



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View full lesson: http://ed.ted.com/lessons/how-life-came-to-land-tierney-thys

Spiders and crustaceans, also known as arthropods, led the charge from water to land--now outnumbering all terrestrial animals. But what about arthropods makes them so adaptable to life on land? Marine biologist Tierney Thys, and Noé Sardet and Sharif Mirshak of the Plankton Chronicles Project, shows us a world of fascinating animals and their habitats.

Lesson by Tierney Thys, visualization by Noé Sardet and Sharif Mirshak (Plankton Chronicles Project, Parafilms).

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The adventure begins! Episode 1: Ethic awakens in a mysterious cell. Can she and robot Hedge solve the programming puzzles blocking their escape?

Uploaded 30-09-19

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This is episode 1 of our animated series “Think Like A Coder.” This 10-episode narrative follows a girl, Ethic, and her robot companion, Hedge, as they attempt to save the world. The two embark on a quest to collect three artifacts and must solve their way through a series of programming puzzles.

Lesson by Alex Rosenthal, directed by Kozmonot Animation Studio.

Supported by Endless: https://endlessnetwork.com

A special thank you to the programmers who assisted in the development of this series: Eric Wastl, Sara Kladky, Ryan Harvey, Dan Bernier, Eden Girma, Matt Gruskin, and James Griffith.

And thank you Dan Finkel, whose idea inspired the lock-picking puzzle.

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View full lesson: https://ed.ted.com/lessons/the-prison-break-think-like-a-coder-ep-1

Thank you so much to our patrons for your support! Without you this video would not be possible! Nik Maier, Angel Pantoja, Nishant Suneja, 张晓雨, Srinivasa C Pasumarthi, Kathryn Vacha, Anthony Arcis, Jeffrey Segrest, Sandra Fuller Bocko, Alex Pierce, Lawrence Teh Swee Kiang, BRENDAN NEALE, Jane White, Karmi Nguyen, John C. Vesey, Yelena Baykova, Harshita Jagdish Sahijwani, Won Jang, Nick Johnson, Tariq Keblaoui, Carlos H. Costa, Eimann P. Evarola, Aleksandr Lyozin, Mohamed Elsayed, Alan Wilder, Marcus Appelbaum, Francisco Leos, Kevin O'Leary, Les Howard, Ten Cha, Mehmet Yusuf Ertekin, Arlene Weston, phkphk123321, Jennifer Kurkoski, Ryan B Harvey, Austin Randall, Abhishek Bansal, Jayant Sahewal, Dian Atamyanov, igor romanenko, Jose Arcadio Valdes Franco, Brandy Sarver, Guy Hardy, Tu-Anh Nguyen, Karl Laius, Madee Lo, JY Kang, Marc Bou Zeid, Abhishek Goel and Charles A Hershberger.



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

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Ever since Einstein published his Special Theory of Relativity, one equation has been the bane of humans hoping to explore the stars: E=mc². In addition to informing our understanding of gravity, space, and time, this formula implies that traveling at or beyond light speed is impossible. Why is that? Lindsay DeMarchi and Fabio Pacucci explain the physics behind this unbreakable speed limit.

Lesson by Lindsay DeMarchi and Fabio Pacucci, directed by Igor Ćorić, Artrake Studio.

This video made possible in collaboration with Brilliant
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View full lesson: https://ed.ted.com/lessons/the-physics-behind-einsteins-most-famous-equation-lindsay-demarchi-and-fabio-pacucci
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Animator's website: https://www.artrake.com
Music: https://www.workplaywork.com
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