TED-Ed
TED-Ed: M Jackson: How to grow your own glacier
In the 13th century, Genghis Khan embarked on a mission to take over Eurasia, swiftly conquering countries and drawing them into his empire. But, legend has it that there was one obstacle that even he couldn't overcome: a towering wall...
SciShow Kids
What Is the Sun Made Of? | Dr. Cecilia Payne-Gaposchkin
Have you ever wondered what the sun is made of? Dr. Cecilia Payne-Gaposhkin wondered that, too, and she used science to figure out the answer! Find out how she did that and more about her amazing life and...
Crash Course
Islam, the Quran, and the Five Pillars All Without a Flamewar Crash Course World History
In which John Green teaches you the history of Islam, including the revelation of the Qu'ran to Muhammad, the five pillars of Islam, how the Islamic empire got its start, the Rightly Guided Caliphs, and more. Learn about hadiths, Abu...
Crash Course
Westward Expansion Crash Course US History
In which John Green teaches you about the Wild, Wild, West, which as it turns out, wasn't as wild as it seemed in the movies. When we think of the western expansion of the United States in the 19th century, we're conditioned to imagine...
TED-Ed
TED-Ed: Can the economy grow forever? | TED-Ed
Many economists think that an eternally growing economy is necessary to keep improving people's lives, and that if the global economy stops growing, people would fight more over the fixed amount of value that exists, rather than working...
TED-Ed
Debunking the myth of the Lost Cause: A lie embedded in American history | Karen L. Cox
In the 1860's, 11 southern states withdrew from the United States and formed the Confederacy. They seceded in response to the growing movement for the nationwide abolition of slavery. Yet barely a year after the Civil War ended, southern...
TED-Ed
TED-Ed: Ancient Greece's greatest popstar | Diane J. Rayor
Over 2,500 years ago, one of ancient Greece's most celebrated popstars and erotic poets enraptured listeners. The singer-songwriter offered a uniquely intimate perspective on love, passion, and longing, and was the first on record to...
TED-Ed
TED-Ed: Love vs. Honor: The Irish myth of Diarmuid's betrayal | Iseult Gillespie
Gráinne, princess of Tara and bride-to-be, was furious. She had thought she was betrothed to a young soldier, bold and brilliant enough to be her equal. Yet it soon became clear she was expected to marry Fionn, a warrior far past his...
TED-Ed
TED-Ed: The myth of the original star-crossed lovers | Shannon Zhao
In the court of the Jade Emperor, a young princess had a special skill: she could pluck clouds from the sky and spin them into the softest robes. But her craft was the same day after day, and she longed for new inspiration. So the Queen...
TED-Ed
TED-Ed: Can you solve the Ragnarok riddle? | Dan Finkel
Ragnarok: The fabled end of the world, when giants, monsters, and Norse gods battle for the future. The gods were winning until the great serpent Jörmungandr emerged. It swallowed Valhalla and contorted itself across the land. Odin has...
TED-Ed
TED-Ed: Can you solve the honeybee riddle? | Dan Finkel
You're a biologist on a mission to keep the rare honeybee Apis Trifecta from going extinct. The last 60 bees of the species are in your terrarium. You've already constructed wire frames of the appropriate size and shape. Now you need to...
TED-Ed
TED-Ed: The problem with the U.S. bail system | Camilo Ramirez
Since 2000, the annual number of people convicted of crimes in the United States has stayed steady, but the average number of people in jail each year has shot up. How can that be? The answer lies in the bail system— which isn't doing...
TED-Ed
TED-Ed: The tragic myth of the Sun God's son | Iseult Gillespie
Every morning, Helios unleashed his golden chariot, and set out across the sky. As the Sun God transformed dawn into day, he thought of his son, Phaethon, below. To prove to Phaethon that he was truly his father, Helios decided to grant...
Crash Course
The Election of 1860 & the Road to Disunion Crash Course US History
In which John Green teaches you about the election of 1860. As you may remember from last week, things were not great at this time in US history. The tensions between the North and South were rising, ultimately due to the single issue of...
Crash Course
History of the 4th of July Crash Course US History Special
In which John Green teaches you a bit about the 4th of July. In this special short Crash Course, John celebrates American Independence Day by teaching you how the holiday came to be on the 4th of July, and the many ways that Americans...
TED-Ed
TED-Ed: Why do you get a fever when you're sick? | Christian Moro
There are many mysteries around fever, but we do know that all mammals, some birds and even a few invertebrate and plant species feel fever's heat. It has persisted for over 600 million years of evolution. But it has a significant cost:...
TED-Ed
TED-Ed: Can you solve the rogue submarine riddle? Difficulty level: Master | Alex Rosenthal
Smuggling yourself aboard the rogue submarine was the easy part. Hacking into the nuclear missile launch override — a little harder. And you've got a problem: you don't have the override code. You know you need the same numbers that were...
TED-Ed
TED-Ed: The Taino myth of the cursed creator | Bill Keegan
Before the world of humans began, there was the world of the gods. Four brothers wandered this celestial realm. One day, the brothers snuck into a spirit's house and spotted a giant gourd hanging in the corner. But as they tried to look...
TED-Ed
TED-Ed: The sibling rivalry that divided a town | Jay Van Bavel and Dominic Packer
One day a pair of brothers working together as shoemakers had an explosive fight that split the family business in two. Over the coming years, this disagreement divided their town— residents and businesses chose sides. Could such a...
TED-Ed
TED-Ed: The kingdom hidden in Brazil | Marc Adam Hertzman and Flavio dos Santos Gomes
In the 1600s, an expansive autonomous settlement called Palmares reached its height in Brazil. It was founded and led by people escaping from slavery, also called maroons. It was one of the world's largest maroon communities, its...
TED-Ed
TED-Ed: The fundamentals of space-time: Part 1 - Andrew Pontzen and Tom Whyntie
Space is where things happen. Time is when things happen. And sometimes, in order to really look at the universe, you need to take those two concepts and mash them together. In this first lesson of a three-part series on space-time,...
TED-Ed
Can you outsmart the apples and oranges fallacy? | Elizabeth Cox
It's 1997. The United States Senate has called a hearing about global warming. Some expert witnesses point out that past periods in Earth's history were warmer than the 20th century. Because such variations existed long before humans,...
TED-Ed
TED-Ed: Blood, concrete, and dynamite: Building the Hoover Dam | Alex Gendler
In the early 20th century, the US had expanded from coast to coast, but many cities in the southwest still lacked reliable water sources. The Colorado River's erratic flow and frequent floods made it unreliable for agriculture, and the...
TED-Ed
Can you solve the monster duel riddle? | Alex Gendler
You've come a long way to compete in the great Diskymon league and prove yourself a Diskymon master. Now that you've made it to the finals, you're up against some tough competition. In round one, you'll face a single opponent and get to...