TED-Ed

View full lesson: http://ed.ted.com/lessons/how-did-trains-standardize-time-in-the-united-states-william-heuisler

If you live in the United States, you may live in the Eastern Standard Time Zone. Or maybe you live in Mountain Standard Time or one of the other standardized time zones. But these time zones have not always been around. In fact, it's a fairly recent development. William Heuisler explains the history of time and how trains changed everything.

Lesson by William Heuisler, animation by Flaming Medusa Studios Inc.

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View full lesson: http://ed.ted.com/lessons/learning-from-past-presidents-doris-kearns-goodwin

Historian Doris Kearns Goodwin talks about what we can learn from American presidents, including Abraham Lincoln and Lyndon Johnson. Then she shares a moving memory of her own father and of their shared love of baseball.

Talk by Doris Kearns Goodwin.

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View full lesson: http://ed.ted.com/lessons/surviving-a-nuclear-attack-irwin-redlener

The face of nuclear terror has changed since the Cold War, but disaster-medicine expert Irwin Redlener reminds us the threat is still real. He looks at some of history's farcical countermeasures and offers practical advice on how to survive an attack.

Talk by Irwin Redlener.

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Explore what makes polio so dangerous, what is causing the 21st century resurgence of cases, and how we can eradicate the disease.

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In 1952, polio was everywhere: killing or paralyzing roughly half a million people annually. Yet just 10 years later, paralytic polio cases in the US dropped by 96% and we were on track to get rid of polio for good. But in recent years, the virus started striking back. So, what’s behind these recent spikes? Explore the dangers of poliovirus and the possibility of eradicating this deadly disease.

Directed by Anton Bogaty.

This video made possible in collaboration with Gates Ventures
Learn more about how TED-Ed partnerships work: https://bit.ly/TEDEdPartner

A special thanks to Ananda Bandyopadhyay, Amber Zeddies, and Kathleen O'Reilly who provided information and insights for the development of this video.

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View full lesson: https://ed.ted.com/lessons/the-real-reason-polio-is-so-dangerous
Dig deeper with additional resources: https://ed.ted.com/lessons/the-real-reason-polio-is-so-dangerous/digdeeper

Animator's website: https://antonbogaty.com
Music: https://www.wonderboyaudio.com
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Thank you so much to our patrons for your support! Without you this video would not be possible! 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, Rayo, Po Foon Kwong, Boffin, Jesse Jurman, Scott Markley, Elija Peterson, Ovidiu Mrd, paul g mohney, Steven Razey, Nathan Giusti, Helen Lee, Anthony Benedict, Karthik Balsubramanian, Annastasshia Ames, Amy Lopez, Vinh-Thuy Nguyen, Liz Candee, Ugur Doga Sezgin, Karmi Nguyen, John C. Vesey, Yelena Baykova, Nick Johnson, Carlos H. Costa, Jennifer Kurkoski, Ryan B Harvey, Akinola Emmanuel, Jose Arcadio Valdes Franco, Sebastiaan Vleugels, Karl Laius, JY Kang and Abhishek Goel.

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Todd Humphreys forecasts the near-future of geolocation when millimeter-accurate GPS "dots" will enable you to find pin-point locations, index-search your physical possessions ... or to track people without their knowledge. And the response to the sinister side of this technology may have unintended consequences of its own. (Filmed at TEDxAustin.)

Uploaded 26-06-13

Talk by Todd Humphreys.



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Explore how the Right to Repair movement is pushing back against companies which don’t want consumers fixing their products.

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Today, some companies are working hard to prevent consumers from repairing products on their own. In many cases, repair can only be done by the original manufacturer, if at all. With limited repair options available, we end up buying new and throwing more items out. So, how exactly do companies prevent repair? And what can consumers do about it? Aaron Perzanowski investigates.

Lesson by Aaron Perzanowski, directed by Nick Hilditch.

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View full lesson: https://ed.ted.com/lessons/why-dont-companies-want-you-to-repair-your-stuff-aaron-perzanowski
Dig deeper with additional resources: https://ed.ted.com/lessons/why-dont-companies-want-you-to-repair-your-stuff-aaron-perzanowski/digdeeper

Animator's website: https://nickhilditch.com
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Thank you so much to our patrons for your support! Without you this video would not be possible! Nicole Klau Ibarra, Jesse Lira, Ezekiel Raui, Petr Vacek, Dennis, 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 and Bethany Connor.

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View full lesson: http://ed.ted.com/lessons/biodiesel-the-afterlife-of-oil-natascia-radice

Uploaded 23-01-14

How could you dispose of your cooking oil when you're done cooking? The easiest thing to do might be to pour it down your drain -- but if you save it up and send it to a processing plant, it can gain useful new life as biodiesel, a biodegradable energy source which can run in diesel engines instead of refined petroleum. Natascia Radice describes the process of turning goop into good.

Lesson by Natascia Radice, animation by Lippy.



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They're the second largest fish in the world, they're almost extinct, and we know almost nothing about them. In this talk, Simon Berrow describes the fascinating basking shark ("Great Fish of the Sun" in Irish), and the exceptional -- and wonderfully low-tech -- ways he's learning enough to save them. (Filmed at TEDxDublin.)

Uploaded 26-06-13

Talk by Simon Berrow.



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Uploaded 10-01-19

View full lesson: https://ed.ted.com/lessons/can-you-solve-the-multiplying-rabbits-riddle-alex-gendler

After years of experiments, you’ve finally created the pets of the future – nano-rabbits! They’re tiny, they’re fuzzy ... and they multiply faster than the eye can see. But a rival lab has sabotaged you, threatening the survival of your new friends. Can you figure out how to avert this hare-raising catastrophe? Alex Gendler shows how.

Lesson by Alex Gendler, directed by Artrake Studio.

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View full lesson: http://ed.ted.com/lessons/history-vs-andrew-jackson-james-fester

Uploaded 21-01-14

Andrew Jackson was both beloved and loathed during his presidency. In this imaginary courtroom, you get to be the jury, considering and weighing Jackson's part in the spoils system, economic depression, and the Indian Removal Act, as well as his patriotism and the pressures of the presidency. James Fester explores how time shapes our relationship to controversial historical figures.

Lesson by James Fester, animation by Brett Underhill.



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