Can you solve the rogue submarine riddle? Difficulty level: Master – Alex Rosenthal

Practice more problem-solving at https://brilliant.org/TedEd — Smuggling yourself aboard the rogue submarine was the easy part. Hacking into the nuclear missile launch override — a little harder. And you’ve got…

The secrets of the world’s most famous symphony – Hanako Sawada

Discover what makes Ludwig van Beethoven’s Symphony Number Five a musical masterpiece, and uncover the story behind its inception. — Eight ferocious notes open one of the most explosive pieces…

You could have a secret twin (but not the way you think) – Kayla Mandel Sheets

Download a free audiobook version of “The Vanishing Half“ and support TED-Ed’s nonprofit mission: https://www.audible.com/ted-ed — While searching for a kidney donor, Karen Keegan stumbled upon a mystery. After undergoing…

Earth’s mysterious red glow, explained – Zoe Pierrat

Explore the phenomenon and uses of chlorophyll fluorescence, a small amount of light emitted by plants during photosynthesis. — In 2009, a satellite circled Earth, scanning and sorting the wavelengths…

Earth’s mysterious red glow, explained – Zoe Pierrat

Explore the phenomenon and uses of chlorophyll fluorescence, a small amount of light emitted by plants during photosynthesis. — In 2009, a satellite circled Earth, scanning and sorting the wavelengths…

What makes a language… a language? – Martin Hilpert

Dig into the distinction between a language and a dialect, and uncover the history of standardized languages. — Outside of China, Mandarin and Cantonese are often referred to as Chinese…

The rise and fall of the Lakota Empire – Pekka Hāmālāinen

Trace the rise and fall of the Lakota Empire which, at their height, were the most dominant power in the American West. — In 1776, a powerful empire was born…

What is MSG, and is it actually bad for you? – Sarah E. Tracy

Dig into the seasoning known as MSG, and find out how this flavoring was developed and if it’s actually bad for your health. — In 1968, Dr. Robert Ho Man…

The infamous overpopulation bet: Simon vs. Ehrlich – Soraya Field Fiorio

Discover an infamous bet between two professors, which sought to predict whether the earth would run out of resources due to a growing human population. — In 1980, Paul Ehrlich…

Is this the most successful animal ever? – Nigel Hughes

Discover the creatures known as trilobites, one of Earth’s most successful early animals, and find out what led to their extinction. — Prevailing for around 270 million years and encompassing…

How we can detect pretty much anything – Hélène Morlon and Anna Papadopoulou

Explore how scientists use environmental DNA (eDNA) in a technique called DNA metabarcoding to find and track species. — Scientists have been staking out a forest in Montana for an…

Can you outsmart the slippery slope fallacy? – Elizabeth Cox

Dig into the slippery slope fallacy, which assumes that one step will lead to a series of events that lead to an extreme— often bad— scenario. — It’s 1954. Vietnamese…

How the COVID-19 vaccines were created so quickly – Kaitlyn Sadtler and Elizabeth Wayne

Discover how mRNA vaccines help your immune system fight viral infections and how this decades-old technology was used to create COVID-19 vaccines. — In the 20th century, most vaccines took…

The secret society of the Great Dismal Swamp – Dan Sayers

Uncover the history of the hidden communities that inhabited the Great Dismal Swamp in North America. — Straddling Virginia and North Carolina is an area that was once described as…

Can you solve the giant spider riddle? – Dan Finkel

Practice more problem-solving at https://brilliant.org/TedEd — Once every century, the world’s greatest spiders gather to compete in a series of grueling games. The winner will become the next arachnomonarch, able…