From TED Ed. Dig into what causes the tip of the tongue phenomenon, where your brain struggles to recall a word or term from memory. — You’re sure you know your 3rd grade teacher’s name— it’s like you’re hovering over it in your mind, but it just won’t materialize. Researchers call this tantalizing torment a…

From TED Ed. Dig into how sleep deprivation affects the teenage body and brain, and what can be done to help adolescents get enough sleep. — Sleep deprivation among American teenagers is an epidemic. Only about 1 in 10 teens gets the 8 to 10 hours of sleep per night recommended by sleep scientists and…

From TED Ed. Explore the ways that lead exposure can harm the human body, and why this toxic element can be found in so many products. — Lead is a metallic element that’s distributed across Earth’s crust. When it enters the human body, it can disrupt many critical processes that span various systems, producing a…

From TED Ed. Explore how our bodies change and age over time, and the three common markers scientists use to measure aging. — If you want to learn a tree’s age, you can count their rings. When it comes to humans, scientists have yet to find any visible traits that mark our age with the…

From TED Ed. Explore the science of bone lengthening surgery, and discover the benefits and limitations of this still-developing technology. — Differences in leg length can emerge for various reasons, from genetic and hormonal conditions to injuries that impact bone growth. But while we still don’t know exactly what degree of difference causes health issues,…

From TED Ed. Are we building skills the wrong way? Explore how having a wide range of experience can be better than early specialization. — There’s a common idea that it takes 10,000 hours of practice to become great at something. From an early age, we are encouraged to choose our path, focus specifically, and…

From TED Ed. Professional vocalists share how to give a great vocal performance by experimenting with styles, training, and taking care of your voice. — "Think Like A Musician" connects you with working musicians who want to help the music-curious and music-passionate hone and share the gift of music with the world. Part interview, part…

From TED Ed. Get to know the Japanese legend of Hōichi the earless, a monk summoned by a mysterious samurai to perform songs of past battles. — Long ago, a temple was built near the site of a naval battle that concluded the long and gruesome conflict known as the Genpei Wars. For centuries after,…