TED-Ed

Discover how evolution and natural selection influence why the human body has vestigial organs— body parts that no longer serve their original purpose. Uploaded 11-11-19--You know that little pink thing nestled in the corner of your eye? It’s actually the remnant of a third eyelid. In humans, it’s vestigial, meaning it no longer serves its original purpose. There are several other vestigial structures in the human body, quietly riding along from one of our ancestor species to the next. But why have they stuck around for so long? Dorsa Amir investigates.Lesson by Dorsa Amir, directed by Avi Ofer.Animator's website: https://www.aviofer.comSign up for our newsletter: http://bit.ly/TEDEdNewsletterSupport us on Patreon: http://bit.ly/TEDEdPatreonFollow us on Facebook: http://bit.ly/TEDEdFacebookFind us on Twitter: http://bit.ly/TEDEdTwitterPeep us on Instagram: http://bit.ly/TEDEdInstagramView full lesson: https://ed.ted.com/lessons/why-do-humans-have-a-third-eyelid-dorsa-aminThank you so much to our patrons for your support! Without you this video would not be possible! Mark Morris, Catherine Sverko, Misaki Sato, Tan YH, Ph.D., Rodrigo Carballo, SookKwan Loong, Bev Millar, Merit Gamertsfelder, Lex Azevedo, Noa Shore, Taylor Hunter, Kyle Nguyen, MJ Tan Mingjie, Cristóbal Moenne, Goh Xiang Ting Diana, Kevin Wong, Dawn Jordan, Yanira Santamaria, Prasanth Mathialagan, Savannah Scheelings, Susan Herder, Samuel Doerle, David Rosario, Dominik Kugelmann, Siamak H, Tracey Tobkin, Dwight Tevuk, Anthony Kudolo, Mrinalini , Yanuar Ashari, Ivan Todorović, Alex Schenkman, Brittiny Elman, Ryohky Araya, Paul Coupe, David Douglass, Ricardo Paredes, Bill Feaver, Eduardo Briceño, Arturo De Leon, Christophe Dessalles, Janie Jackson, Dr Luca Carpinelli, Heather Slater, Yuh Saito, Quentin Le Menez, Mattia Veltri, Fabian Amels, Sandra Tersluisen and PnDAA. Learn more about your ad choices. Visit megaphone.fm/adchoices Learn more about your ad choices. Visit megaphone.fm/adchoices

View full lesson: http://ed.ted.com/lessons/the-shape-shifting-future-of-the-mobile-phone-fabian-hemmertUploaded 28-07-13Fabian Hemmert demos one future of the mobile phone -- a shape-shifting and weight-shifting handset that "displays" information nonvisually, offering a delightfully intuitive way to communicate. (Filmed at TEDxBerlin.)Talk by Fabian Hemmert. Learn more about your ad choices. Visit megaphone.fm/adchoices Learn more about your ad choices. Visit megaphone.fm/adchoices

Dig into the epic of Mwindo, a boy seeking vengeance upon his power-hungry and murderous father who has fled to the underworld.--If any of his wives ever birthed a son, he’d be killed immediately. That was the threat Shemwindo, ruler of the village of Tubondo, had delivered, for he wanted all the power to himself. But he was about to meet his match— and enter a rivalry that would take him to the underworld and back. Joseph Mbele shares the epic journey of Mwindo and his quest for vengeance.Lesson by Joseph Mbele, directed by Raghav Arumugam, Jagriti Khirwar.Support Our Non-Profit Mission----------------------------------------------Support us on Patreon: http://bit.ly/TEDEdPatreonCheck out our merch: http://bit.ly/TEDEDShop----------------------------------------------Connect With Us----------------------------------------------Sign up for our newsletter: http://bit.ly/TEDEdNewsletterFollow us on Facebook: http://bit.ly/TEDEdFacebookFind us on Twitter: http://bit.ly/TEDEdTwitterPeep us on Instagram: http://bit.ly/TEDEdInstagram----------------------------------------------Keep Learning----------------------------------------------View full lesson: https://ed.ted.com/lessons/the-boy-who-defeated-the-god-of-the-underworld-joseph-mbeleDig deeper with additional resources: https://ed.ted.com/lessons/the-boy-who-defeated-the-god-of-the-underworld-joseph-mbele/digdeeperAnimator's website: https://www.raghavarumugam.com and https://www.jagritikhirwar.comMusic: https://www.campstudio.co----------------------------------------------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. Learn more about your ad choices. Visit megaphone.fm/adchoices

View full lesson: http://ed.ted.com/lessons/leigh-nataro-what-happens-if-you-guessWill it rain tomorrow? How likely is your favorite team to win the Super Bowl? Questions like these are answered through the mathematics of probability. Watch this artistic visualization of your odds of passing a test if you don't know any of the answers. Lesson by Leigh Nataro, animation by Matthew Saunders. Learn more about your ad choices. Visit megaphone.fm/adchoices

View full lesson: http://ed.ted.com/lessons/what-s-the-big-deal-with-gluten-william-d-cheyUploaded 02-06-15If you've been to a restaurant in the last few years, you’ve likely seen the words gluten-free written somewhere on the menu. But what exactly is gluten, and why can’t some people process it? And why does it only seem to be a problem recently? William D. Chey unravels the facts behind celiac disease, wheat allergies and non-celiac gluten sensitivity.Lesson by William D. Chey, animation by Stretch Films, Inc. Learn more about your ad choices. Visit megaphone.fm/adchoices Learn more about your ad choices. Visit megaphone.fm/adchoices