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TED-Ed's commitment to creating lessons worth sharing is an extension of TED's mission of spreading great ideas. Within TED-Ed's growing library of TED-Ed animations, you will find carefully...
Centuries ago, the Inca developed ingenuous suits of armor that could protect warriors from even the fiercest physical attacks. These hardy...
As the Roman Empire flourished, Scandinavians had small settlements and no central government. Yet by the 11th century, they had spread far...
In the spring, just after a heavy rainfall, male and female fire ants swarm the skies for a day of romance, known as the nuptial flight. Tho...
This is episode 5 of our animated series "Think Like A Coder." This 10-episode narrative follows a girl, Ethic, and her robot companion, Hed...
After years of war, the world's kingdoms have come to an agreement. Every five years, teams representing the elves, goblins, and treefolk wi...
On a night in 1916, Russian aristocrats set a plot of assassination into motion. If all went as planned, a man would be dead by morning, tho...
How is it that a breathalyzer can measure the alcohol content in someone's blood, hours after they had their last drink, based on their brea...
Nobody knows exactly when humans began to create fermented beverages. The earliest known evidence comes from 7,000 BCE in China, where resid...
After witnessing the atrocities of his fellow man in World War II, William Golding was losing his faith in humanity. Later, during the Cold...
In 1884, an unlucky patient who had a rapidly growing cancer in his neck came down with an unrelated bacterial skin infection. As he recover...
This is episode 4 of our animated series "Think Like A Coder." This 10-episode narrative follows a girl, Ethic, and her robot companion, Hed...
During World War I, scientists were trying to develop an antidote to the poisonous yellow cloud known as mustard gas. They discovered the ga...
In 1990, the Italian government enlisted top engineers to stabilize Pisa's famous Leaning Tower. There'd been many attempts during its 800 y...
Corn currently accounts for more than one tenth of our global crop production. And over 99% of cultivated corn is the exact same type: Yello...
In 1970, marijuana was classified as a schedule 1 drug in the United States: the strictest designation possible, meaning it was completely i...
Meet Lucy. She was a math major in college, and aced all her courses in probability and statistics. Which do you think is more likely: that...
Juana Ramírez de Asbaje sat before a panel of prestigious theologians, jurists, and mathematicians. They had been invited to test Juana's kn...
In 1948, Spanish ophthalmologist Jose Ignacio Barraquer Moner was fed up with glasses. He wanted a solution for blurry vision that fixed the...
This is episode 3 of our animated series "Think Like A Coder." This 10-episode narrative follows a girl, Ethic, and her robot companion, Hed...
Asgard, a realm of wonders, was where the Norse Gods made their home. There Odin's great hall of Valhalla towered above the mountains and Bi...
Given a range of integers from 0 to 100, what would the whole number closest to 2/3 of the average of all numbers guessed be? For example, i...
Imagine a future where nobody dies— instead, our minds are uploaded to a digital world. There they could live on in a realistic, simulated e...
This is episode 2 of our animated series "Think Like A Coder." This 10-episode narrative follows a girl, Ethic, and her robot companion, Hed...
This is episode 1 of our animated series "Think Like A Coder." This 10-episode narrative follows a girl, Ethic, and her robot companion, Hed...
For most jobs, it's understood that you can be fired – whether for crime, incompetence, or just poor performance. But what if your job happe...
15th century Europeans believed they had hit upon a miracle cure: a remedy for epilepsy, hemorrhage, bruising, nausea and virtually any othe...
A classroom erupts into a war of words as students grapple with a seemingly simple prompt: what is the opposite of a gun? This animation is...
Marie Skłodowska Curie's revolutionary research laid the groundwork for our understanding of physics and chemistry, blazing trails in oncolo...
In 2004, a nutrition company offered a life-changing opportunity to earn a full-time income for part-time work. There were only two steps to...
In 1925, Frida Kahlo was on her way home from school in Mexico City when the bus she was riding collided with a streetcar. She suffered near...
Ah, romantic love; beautiful and intoxicating, heart-breaking and soul-crushing... often all at the same time! If romantic love has a purpos...
Stress isn't always a bad thing; it can be handy for a burst of extra energy and focus, like when you're playing a competitive sport or have...
Depression is the leading cause of disability in the world; in the United States, close to ten percent of adults struggle with the disease....
Ever go to pour ketchup on your fries...and nothing comes out? Or the opposite happens, and your plate is suddenly swimming in a sea of red?...
Water is essentially everywhere in our world, and the average human is composed of between 55 and 60% water. So what role does water play in...
Beginning around 1377, medieval England was shaken by a power struggle between two noble families, which spanned generations and involved a...
When you take a bite of a hot pepper, your body reacts as if your mouth is on fire -- because that's essentially what you've told your brain...
Loki the mischief-maker, writhes in Thor's iron grip. The previous night, he'd snuck up on Thor's wife and shorn off her beautiful hair. To...
In ancient times, wildcats were fierce carnivorous hunters. And unlike dogs, who have undergone centuries of selective breeding, modern cats...
Despite water covering 71% of the planet's surface, more than half the world's population endures extreme water scarcity for at least one mo...
Kurt Vonnegut found the tidy, satisfying arcs of many stories at odds with reality, and he set out to explore the ambiguity between good and...
The earliest time measurements were observations of cycles of the natural world, using patterns of changes from day to night and season to s...
Cigarettes aren't good for us. That's hardly news -- we've known about the dangers of smoking for decades. But how exactly do cigarettes har...
The constant thud underneath your feet. The constrained space. The monotony of going nowhere fast. Running on a treadmill can certainly feel...