TED-Ed

Explore the effects that isolation has on your body and brain, and how a lack of interaction and activity can impact our well-being.

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Everyone needs time to themselves, and peaceful solitude has stress-relieving benefits. But when being alone is forced upon you, the effects can be surprisingly extensive. And though different people experience distinct effects, symptoms tend to become more severe and persistent the longer one’s isolated. So, how exactly does isolation affect your body and brain? Terry Kupers investigates.

Lesson by Terry Kupers, directed by Camille Bovey.

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View full lesson: https://ed.ted.com/lessons/what-happens-to-your-brain-without-any-social-contact-terry-kupers
Dig deeper with additional resources: https://ed.ted.com/lessons/what-happens-to-your-brain-without-any-social-contact-terry-kupers/digdeeper

Animator's website: https://camillebovey.com
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View full lesson: http://ed.ted.com/lessons/dark-matter-how-does-it-explain-a-star-s-speed-don-lincoln

All the stars in a spiral galaxy rotate around a center -- but to astronomers, the speed that each star travels wasn't making sense. Why didn't stars slow down toward the edges as expected? Don Lincoln explains how a mysterious force called dark matter is (possibly) the answer -- and why the search for an answer matters.

Lesson by Don Lincoln, animation by RocknRoll Animation.

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Bruce Feiler has a radical idea: To deal with the stress of modern family life, go agile. Inspired by agile software programming, Feiler introduces family practices which encourage flexibility, bottom-up idea flow, constant feedback and accountability. One surprising feature: Kids pick their own punishments.

Uploaded 03-12-13

Talk by Bruce Feiler.



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Explore how big-headed ants have changed an entire ecosystem in Kenya, from its insects and plants to its biggest predators.

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In the early 2000s, one of the world’s most widespread invasive species landed in Kenya’s Laikipia Plateau: big-headed ants. They expanded rapidly into super-colonies, preying on other insects, spiders, and even small birds. Their presence has wreaked havoc on the ecosystem and significantly changed the landscape. So, how did these tiny creatures have such a huge impact? Cella Wright investigates.

Lesson by Cella Wright, directed by Steve West, Lazy Chief.

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View full lesson: https://ed.ted.com/lessons/can-you-solve-the-savanna-mystery-cella-wright
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Thank you so much to our patrons for your support! Without you this video would not be possible! Roberto Chena, Oliver Koo, Luke Pisano, Andrea Gordon, Aleksandar Donev, 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, and Brian A. Dunn.

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

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When the Visualphone VP210 hit the market in 1999, it advertised a never-before-seen feature: a camera. With only .11 megapixels, the Visualphone is a relic compared to modern devices. But while this technology has improved dramatically, engineers are rapidly approaching a hard limit on phone camera quality. So, what's limiting them? Rachel Yang shares a snapshot of how digital cameras work.

Lesson by Rachel Yang, directed by Vicente Numpaque, Hernando Bahamon, Globizco Studios.

This video made possible in collaboration with Brilliant
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View full lesson: https://ed.ted.com/lessons/why-do-smartphones-need-multiple-cameras-rachel-yang
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Thank you so much to our patrons for your support! Without you this video would not be possible! Michel-Ange Hortegat, Enes Kirimi, Amaury BISIAUX, ND, Samyogita Hardikar, Vanessa Graulich, Vandana Gunwani, Abdulmohsin Almadi, AJ Lyon, Geoffrey Bultitude, Mi Mi, Thomas Rothert, Brian Elieson, Oge O, Weronika Falkowska, Nevin Spoljaric, Sid Chanpuriya, Anoop Varghese, David Yastremski, Noah Webb, Roberto Chena, Oliver Koo, Luke Pisano, Andrea Gordon, Aleksandar Donev, 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, and Kurt Paolo Sevillano.

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Fifteen-year-old Tavi Gevinson had a hard time finding strong female, teenage role models -- so she built a space where they could find each other. At TEDxTeen, she illustrates how the conversations on sites like Rookie, her wildly popular web magazine for and by teen girls, are putting a new, unapologetically uncertain and richly complex face on modern feminism. (Filmed at TEDxTeen.)

Uploaded 21-08-13

Talk by Tavi Gevinson.



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Explore the works of science fiction visionary Octavia E. Butler, whose novels, such as “Parable of the Sower,” influenced the growing popularity of Afrofuturism.

Uploaded 25-02-19

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Much science fiction features white male heroes who blast aliens or become saviors of brown people. Octavia E. Butler knew she could tell a better story. She built stunning worlds rife with diverse characters, and brought nuance and depth to the representation of their experiences. Ayana Jamieson and Moya Bailey dive into the works of the visionary storyteller who upended science fiction.

Lesson by Ayana Jamieson and Moya Bailey, directed by Tomás Pichardo-Espaillat.

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View full lesson: https://ed.ted.com/lessons/why-should-you-read-sci-fi-superstar-octavia-e-butler-ayana-jamieson-and-moya-bailey

Thank you so much to our patrons for your support! Without you this video would not be possible! Tirath Singh Pandher, Athena Grace Franco, Terry Minion, Mauricio Basso, Kelvin Lam, jj5252, Karlee Finch, Chumi Ogbonna, Barthélémy Michalon, Lefty McGoo, Lucas Pincerato, Mohamed Elsayed, Amin Shahril, Mihail Radu Pantilimon, Chris Thompson, Derek Drescher, Karisa Caudill, Zhong Ming Zenny Tan, Christina Salvatore, Brady Jones, Todd Gross, Alexis Hevia, Heidi Stolt, Robert Seik, Coenraad Keuning, Charles A Hershberger, Laura Cameron Keith, Abhishek Goel, Marc Bou Zeid, JY Kang, Anastasiia , Madee Lo, Arpita Singh, Karl Laius, Tu-Anh Nguyen, Guy Hardy, Brandy Sarver, Jose Arcadio Valdes Franco, Akinola Emmanuel, igor romanenko, Dian Atamyanov, Abhishek Bansal, Austin Randall, Ryan B Harvey, Jennifer Kurkoski, phkphk123321, Arlene Weston, Mehmet Yusuf Ertekin, Ten Cha and Les Howard.



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Dig into the Chinese myth of Zhu Yingtai, who disguises herself as a boy in order to attend school, and her love Liang Shanbo.

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Although only boys were allowed at the Confucius Academy, what Zhu Yingtai wanted was to go to school. She begged her parents to let her attend dressed as a boy and, seeing her determination and clever disguises, they finally agreed— as long as she kept her identity a secret and later returned to the traditional path they’d set for her. Lijun Zhang shares the Chinese myth of the butterfly lovers.

Lesson by Lijun Zhang, directed by Amir Houshang Moein.

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View full lesson: https://ed.ted.com/lessons/the-chinese-legend-of-the-butterfly-lovers-lijun-zhang
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View full lesson: http://ed.ted.com/lessons/the-carbon-cycle-nathaniel-manning

Uploaded 02-10-12

What exactly is the carbon cycle? Nathaniel Manning provides a basic look into the cyclical relationship of carbon, humans and the environment.

Lesson by Nathaniel Manning, animation by Jill Johnston.



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Trace the evolution of dog breeds, and find out why their characteristics, behaviors, and personalities vary so widely.

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The immense physical variety of dogs makes them among the world’s most diverse species and likely the one with the greatest range in size. A Pomeranian, for example, might weigh 2 kilograms, while a Mastiff could tip the scale to 100. So, why is this? And what does a dog’s breed actually say about them? Kathleen Morrill Pirovich explores the dizzying diversity of dogs.

Lesson by Kathleen Morrill Pirovich, directed by Anastasiia Falileieva, Studio Plastic Bag.

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