TED-EdWhy do we harvest horseshoe crab blood? – Elizabeth Cox
Check out our Patreon page: View full lesson: During the warmer months, especially at night during the full moon, ...
TED-Ed
TED-Ed
TED-EdHow do dogs “see” with their noses? – Alexandra Horowitz
View full lesson: You may have heard the expression that dogs ‘see with their noses.’ But these creature’s amazing n...
TED-EdHow do animals experience pain? – Robyn J. Crook
View full lesson: Humans know the surprising prick of a needle, the searing pain of a stubbed toe, and the throbbing...
TED-EdThe chemistry of cookies – Stephanie Warren
View full lesson: You stick cookie dough into an oven, and magically, you get a plate of warm, gooey cookies. Except...
TED-EdHow does your body know you’re full? – Hilary Coller
Check out our Patreon page: View full lesson: Hunger claws at your belly. It tugs at your intestines, which begin ...
TED-EdWhy is being scared so fun? – Margee Kerr
View full lesson: At this very moment, people are lining up somewhere to scare themselves, be it with a thrill-ride ...
TED-EdHow does asthma work? – Christopher E. Gaw
View full lesson: More than 300 million people around the world suffer from asthma, and around 250,000 people die fr...
TED-EdHow we see color – Colm Kelleher
View full lesson: There are three types of color receptors in your eye: red, green and blue. But how do we see the a...
TED-EdLight seconds, light years, light centuries: How to measure extreme distances – Yuan-Sen Ting
View full lesson: When we look at the sky, we have a flat, two-dimensional view. So how do astronomers figure the di...
TED-EdAre you a body with a mind or a mind with a body? – Maryam Alimardani
Download a free audiobook and support TED-Ed's nonprofit mission: Check out Cixin Liu's "The Three Body Problem": ...
TED-EdWhat is entropy? – Jeff Phillips
View full lesson: There’s a concept that’s crucial to chemistry and physics. It helps explain why physical processes...
TED-EdHow did English evolve? – Kate Gardoqui
View full lesson: What is the difference between "a hearty welcome" and "a cordial reception"? In a brief, action-pa...
TED-EdHow smart are orangutans? – Lu Gao
View full lesson: Along with humans, orangutans belong to the Hominidae family tree, which stretches back 14 million...
TED-EdEverything you need to know to read “Frankenstein” – Iseult Gillespie
View full lesson: In 1815, Lord Byron proposed a challenge to a few literary guests he had gathered in his house on ...
TED-EdThe science of spiciness – Rose Eveleth
View full lesson: When you take a bite of a hot pepper, your body reacts as if your mouth is on fire -- because that...
TED-EdWhat is the Heisenberg Uncertainty Principle? – Chad Orzel
View full lesson: The Heisenberg Uncertainty Principle states that you can never simultaneously know the exact posit...
TED-EdParticles and waves: The central mystery of quantum mechanics – Chad Orzel
View full lesson: One of the most amazing facts in physics is that everything in the universe, from light to electro...
TED-EdHow is power divided in the United States government? – Belinda Stutzman
View full lesson: Article II of the United States Constitution allows for three separate branches of government (leg...
TED-EdThe Chinese myth of the meddling monk – Shunan Teng
Will Bai Su Zhen, the white snake demon, and her love, Xu Xian, ever be free of the meddling monk? (Part Two of the my...
TED-EdWhat gives a dollar bill its value? – Doug Levinson
View full lesson: The value of money is determined by how much (or how little) of it is in circulation. But who make...