TED-Ed

View full lesson: http://ed.ted.com/lessons/how-big-is-infinity

Using the fundamentals of set theory, explore the mind-bending concept of the "infinity of infinities" -- and how it led mathematicians to conclude that math itself contains unanswerable questions.

Lesson by Dennis Wildfogel, animation by Augenblick Studios.

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Explore the ways that lead exposure can harm the human body, and why this toxic element can be found in so many products.

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Lead is a metallic element that’s distributed across Earth’s crust. When it enters the human body, it can disrupt many critical processes that span various systems, producing a diverse set of symptoms. So, just how bad is lead for human health? And if it’s really that dangerous, how did it get into so many products? Gerald Markowitz and David Rosner dig into the lethal history of lead.

Lesson by Gerald Markowitz and David Rosner, directed by Tim Rauch.

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View full lesson: https://ed.ted.com/lessons/how-lead-affects-your-body-gerald-markowitz-and-david-rosner
Dig deeper with additional resources: https://ed.ted.com/lessons/how-lead-affects-your-body-gerald-markowitz-and-david-rosner/digdeeper

Animator's website: https://timrauchanimation.weebly.com
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Thank you so much to our patrons for your support! Without you this video would not be possible! Olivia Fu, Kari Teffeau, Cindy Lai, Rajath Durgada Manjunath, Dan Nguyen, Chin Beng Tan, Tom Boman, Karen Warner, Iryna Panasiuk, Aaron Torres, Eric Braun, Sonja Worzewski, Michael Clement, Adam Berry, Ghaith Tarawneh, Nathan Milford, Tomas Beckett, Alice Ice, Eric Berman, Kurt Paolo Sevillano, Jennifer Heald, Megulo Abebe, isolwi, Kate Sem, Ujjwal Dasu, Angel Alberici, Minh Quan Dinh, Sylvain, Terran Gimpel, Talia Sari, Katie McDowell, Allen, Mahina Knuckles, Charmaine Hanson, Thawsitt, Jezabel, Abdullah Abdulaziz, Xiao Yu, Melissa Suarez, Brian A. Dunn, Francisco Amaya, Daisuke Goto, Matt Switzler, Peng, Tzu-Hsiang, Bethany Connor, Jeremy Shimanek, Mark Byers, Avinash Amarnath, Xuebicoco, and Rayo.

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Wondering how you can catch the perfect wave? Dive into the fascinating and complex physics of surfing.

Uploaded 11-03-19

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Whether or not you realize it, surfers are masters of complicated physics. The science of surfing begins as soon as a board first hits the water. Surfers may not be thinking about weather patterns in the Pacific, tectonic geology or fluid mechanics, but the art of catching the perfect wave relies on all these things and more. Nick Pizzo dives into the gnarly physics that make surfing possible.

Lesson by Nick Pizzo, directed by Wonderlust.

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View full lesson: https://ed.ted.com/lessons/the-physics-of-surfing-nick-pizzo

Thank you so much to our patrons for your support! Without you this video would not be possible! 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, Alexander Walls, Annamaria Szilagyi, Morgan Williams, Abhijit Kiran Valluri, Mandeep Singh, Sama aafghani, سلطان الخليفي, Marylise CHAUFFETON, Marvin Vizuett, Jayant Sahewal, Quinn Shen, Caleb ross, Elizabeth Cruz, Elnathan Joshua Bangayan, Mullaiarasu Sundaramurthy, Jose Henrique Leopoldo e Silva, Dan Paterniti, Jerome Froelich, Tyler Yoshizumi, Martin Stephen, Justin Carpani, Faiza Imtiaz, Khalifa Alhulail, Tejas Dc, Benjamin and Shannon Pinder, Srikote Naewchampa, Sage Curie, Exal Enrique Cisneros Tuch, Ana Maria, Vignan Velivela, Ahmad Hyari, eden sher, Travis Wehrman, Louisa Lee, Kiara Taylor and Аркадий Скайуокер.



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View full lesson here: http://ed.ted.com/lessons/why-the-size-of-your-screen-matters-brian-gervase

Watching a movie at home isn't quite the same experience as seeing it at a movie theater -- but why? Learn how changes in aspect ratio affect every film, and why your television might not be delivering the whole picture.

Lesson by Brian Gervase, animation by Andrei Feheregyhazi.

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Professional musicians share the key components of being a great performer and what it means to have stage presence.

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"Think Like A Musician" connects you with working musicians who want to help the music-curious and music-passionate hone and share the gift of music with the world. Part interview, part animated course, our first season "Think Like A Performer" features artists sharing their insight on the ins and outs of fine-tuning your instrument and crafting a great performance.

Each episode features free supplemental learning materials developed by Education Through Music (https://etmonline.org) — a nonprofit with over 30 years of experience developing classroom-adaptable curriculum for music educators.

Directed by Kozmonot Animation Studio.

A special thanks to the musicians who provided their insights and expertise for this video. You can check out their pages here:
https://www.youtube.com/user/benharper
https://www.youtube.com/channel/UCZOWzC1SZPiIRRr52fdabvw
https://www.youtube.com/channel/UCMZsFzIPvqSsOL_ta-zZq2g
https://www.youtube.com/@Breland
https://www.youtube.com/@grace__bowers
https://www.youtube.com/@TonySuccar
https://www.youtube.com/channel/UC4IGqi6jnpDTct8_ij6LBag
https://www.youtube.com/channel/UC75d1FNP1qR0lCY1usRKQEw

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View full lesson: https://ed.ted.com/lessons/the-secret-to-a-great-performance-according-to-great-performers-think-like-a-musician
Dig deeper with additional resources: https://ed.ted.com/lessons/the-secret-to-a-great-performance-according-to-great-performers-think-like-a-musician/digdeeper
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Thank you so much to our patrons for your support! Without you this video would not be possible! 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, Olha Bahatiuk, Jesús Bíquez Talayero, Chels Raknrl, Sai Pranavi Jonnalagadda, Stuart Rice, and Jing Chen.

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Discover the evolutionary purpose of nails, and explore the theories of why they evolved from claws over 55 million years ago.

Uploaded 29-10-19

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Consider the claw. Frequently found on animals around the world, it’s one of nature’s most versatile tools. Bears use claws for digging as well as defense. An eagle’s needle-like talons can pierce the skulls of their prey. Even the ancestors of primates used to wield these impressive appendages, until their claws evolved into nails. So what caused this adaptation? Matthew Borths investigates.

Lesson by Matthew Borths, directed by Augenblick Studios.

Animator's website: https://www.augenblickstudios.com
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View full lesson: https://ed.ted.com/lessons/claws-vs-nails-matthew-borths

Thank you so much to our patrons for your support! Without you this video would not be possible! Jose Arcadio Valdes Franco, Brandy Sarver, Guy Hardy, Tu-Anh Nguyen, Karl Laius, Madee Lo, JY Kang, Marc Bou Zeid, Abhishek Goel, Charles A Hershberger, Coenraad Keuning, Robert Seik, Heidi Stolt, Alexis Hevia, Todd Gross, Brady Jones, Christina Salvatore, Zhong Ming Zenny Tan, Karisa Caudill, Bruno Pinho, Derek Drescher, Mihail Radu Pantilimon, Amin Shahril, Mohamed Elsayed, Barthélémy Michalon, Chumi Ogbonna, Karlee Finch, Mohammad Said, jj5252, Kelvin Lam, Mauricio Basso, Athena Grace Franco, Tirath Singh Pandher, Melvin Williams, Tsz Hin Edmund Chan, Nicolas Silva, Raymond Lee, Kurt Almendras, Denise A Pitts, Abdallah Absi, Dee Wei, Richard A Berkley, Tim Armstrong, Daniel Nester, Hashem Al, denison martins fernandes, Doug Henry, Arlene Spiegelman, Michał Friedrich and Joshua Wasniewski.



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Download a free audiobook version of "The Pillars of the Earth" and support TED-Ed's nonprofit mission: https://www.audible.com/ted-ed

Uploaded 31-10-19

Check out our full book recommendation: https://shop.ed.ted.com/collections/ted-ed-book-recommendations/products/illuminati

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The year was 1776. In Bavaria, new ideals of rationalism, religious freedom and universal human rights competed with the Catholic church’s heavy influence over public affairs. Adam Weishaupt, a law professor frustrated with the Church’s ideology, decided to spread his ideas through a secret society: the Illuminati. Chip Berlet dives into the history, ideals and rituals of the infamous group.

Lesson by Chip Berlet, directed by Brett Underhill.

Animator's website: https://www.porkchopbob.com
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View full lesson: https://ed.ted.com/lessons/are-the-illuminati-real-chip-berlet

Thank you so much to our patrons for your support! Without you this video would not be possible! Maryam Dadkhah, Kristiyan Bonev, Keven Webb, Mihai Sandu, Deepak Iyer, Javid Gozalov, Emilia Alvarado, Jaime Arriola, Mirzat Tulafu, Lewis Westbury, Felipe Hoff, Rebecca Reineke, Cyrus Garay, Victoria Veretilo, Michael Aquilina, William Biersdorf, Patricia Alves Panagides, Valeria Sloan Vasquez, Mike Azarkman, Yvette Mocete, Pavel Maksimov, Victoria Soler-Roig, Betsy Feathers, Samuel Barbas, Therapist Gus, Sai Krishna Koyoda, Elizabeth Parker, William Bravante, Irindany Sandoval, Mark wisdom, Brighteagle, Beatriz Inácio, Mighterbump, Pamela Harrison, Maija Chapman, Liana Switzer, Curtis Light, The Brock, Dianne Palomar, Edgar Campos Barrachina, Maria Lerchbaumer, Ever Granada, Marin Kovachev, Ravi S. Rāmphal, Penelope Misquitta, Tekin Gültekin, Jhuval, Hans Peng, Gaurav Mathur and Erik Biemans.



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In her New Orleans neighborhood, artist and TED Fellow Candy Chang turned an abandoned house into a giant chalkboard asking a fill-in-the-blank question: "Before I die I want to ___." Her neighbors' answers -- surprising, poignant, funny -- became an unexpected mirror for the community. (What's your answer?)

Talk by Candy Chang.

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Explore the intertwined histories and cultures of the major religions: Hinduism, Judaism, Buddhism, Christianity and Islam.

Uploaded 14-11-13

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It's perfectly human to grapple with questions, like 'Where do we come from?' and 'How do I live a life of meaning?' These existential questions are central to the five major world religions -- and that's not all that connects these faiths. John Bellaimey explains the intertwined histories and cultures of Hinduism, Judaism, Buddhism, Christianity and Islam.

Lesson by John Bellaimey, animation by TED-Ed.

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View full lesson: http://ed.ted.com/lessons/the-five-major-world-religions-john-bellaimey



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In Libya, Zahra' Langhi was part of the "days of rage" movement that helped topple the dictator Gaddafi. But -- then what? In their first elections, Libyans tried an innovative slate of candidates, the "zipper ballot," that ensured equal representation from men and women of both sides. Yet the same gridlocked politics of dominance and exclusion won out. What Libya needs now, Langhi suggests, is collaboration, not competition; compassion, not rage.

Talk by Zahra' Langhi.

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