https://www.youtube.com/watch?v=0SMNYivhGsc&t=3s Published on Oct 17, 2012 Invented in 1793, the cotton gin changed history for good and bad. By allowing one field hand to do the work of 10, it powered a new industry that brought wealth and power to the American South -- but, tragically, it also multiplied and prolonged the use of slave labor. Kenneth C. Davis lauds innovation, while warning us of unintended consequences. Lesson by Kenneth C. Davis, animation by Sunni Brown. View full lesson: https://ed.ted.com/lessons/how-inventions-change-history-for-better-and-for-worse-kenneth-c-davis

https://www.youtube.com/watch?v=tKLJ6KQAcjI Published on Jan 23, 2020 Dig into the science of how cotton transforms from seed to fiber, and how these cotton fibers are used to make everything from fabrics, to currency, and fishing nets. -- Centuries ago, the Inca developed ingenuous suits of armor that could protect warriors from even the fiercest physical attacks. These hardy structures were made not from iron or steel, but rather something unexpectedly soft: cotton. Today cotton is used to make everything from fabric, to currency, diapers and fishing nets. Michael R. Stiff explores the science of what makes cotton so versatile. Lesson by Michael R. Stiff, directed by WOW-HOW Studio. View full lesson: https://ed.ted.com/lessons/why-is-cotton-in-everything-michael-r-stiff

https://www.youtube.com/watch?v=BiSYoeqb_VY&t=130s Published on Sep 5, 2017 Consider the classic white t-shirt. Annually, we sell and buy 2 billion t-shirts globally, making it one of the most common garments in the world. But how and where is the average t-shirt made, and what’s its environmental impact? Angel Chang traces the life cycle of a t-shirt. Lesson by Angel Chang, directed by TED-Ed. View full lesson: https://ed.ted.com/lessons/the-life-cycle-of-a-t-shirt-angel-chang

https://www.youtube.com/watch?v=A_YMOhpyErI Published on Apr 23, 2020 Dive into the anatomy of a sneaker to better understand your clothing’s carbon footprint, and how to be a more responsible consumer. Australians call them “runners." The British know them as “trainers.” Americans refer to them as “sneakers.” Whatever you call them, these casual shoes are worn by billions of people around the world. Today, roughly 23 billion shoes are produced each year. So, how can we balance our love of sneakers with the need for sustainability? Angel Chang explores how shoe manufacturing impacts our planet. Lesson by Angel Chang, directed and animated by Ella Dobson. View full lesson: https://ed.ted.com/lessons/the-life-cycle-of-a-sneaker-angel-chang

Social Science

https://www.youtube.com/watch?v=x7KKkElpyKQ Published on May 5, 2020 Dig into the science of how soap breaks down a coronavirus, and the effectiveness of hand sanitizer against a viral outbreak. Your hands, up close, are anything but smooth. With peaks and valleys, folds and rifts, there are plenty of hiding places for a virus to stick. If you then touch your face, the virus can infect you. But there are two extraordinarily simple ways you can keep that from happening: soap and water, and hand sanitizer. So which is better? Alex Rosenthal and Pall Thordarson investigate. Lesson by Alex Rosenthal and Pall Thordarson, directed by Artrake Studio. View full lesson: https://ed.ted.com/lessons/which-is-better-soap-or-hand-sanitizer-alex-rosenthal-and-pall-thordarson

United States History

https://www.youtube.com/watch?v=0sn8CUyvG2k Published on Apr 28, 2020 Get to know the story of Sojourner Truth, a woman born into slavery who became known as a powerful orator and outspoken activist. -- Isabella Baumfree was born into slavery in late 18th century New York. Fleeing bondage with her youngest daughter, she renamed herself Sojourner Truth and embarked on a legendary speaking tour. She became known as an electrifying orator and her speeches impacted thousands of people in communities across the United States. Daina Ramey Berry details the life of the outspoken activist. Lesson by Daina Ramey Berry, directed by WOW-HOW Studio. View full lesson: https://ed.ted.com/lessons/the-electrifying-speeches-of-sojourner-truth-daina-ramey-berry