Civic evangelist Eric Liu shares a powerful way to rekindle the spirit of citizenship and the belief that democracy still works. Join him for a trip to "Civic Saturday" and learn more about how making civic engagement a weekly habit can...

What must our dogs be thinking when they look at us? Poet Billy Collins imagines the inner lives of two very different companions. It’s a charming short talk, perfect for taking a break and dreaming …

Today we're learning about the Transatlantic Slave Trade, which brought millions of captive Africans to the Americas between the 16th and 19th centuries, with the largest number of people trafficked between 1700 and 1808. We'll look at...

In the 4th century BCE, a young Diogenes of Sinope was found to be counterfeiting coins. He was stripped of his citizenship, his money, all his possessions and sent into exile. He decided he would live self-sufficiently, close to nature,...

In which Mike Rugnetta sits you down for a little talk about myth as a way to construct or reinforce social orders. Specifically, we're going to look today at stories from around the world that establish or amplify the idea that the...

Shameem Akhtar posed as a boy during her early childhood in Pakistan so she could enjoy the privileges Pakistani girls are rarely afforded: to play outside and attend school. In an eye-opening, personal talk, Akhtar recounts how the...

The Russian invasion of Ukraine has destroyed so much -- including hundreds of schools, where the country's children were forging their futures -- but it has not stopped Ukrainians from pursuing knowledge and curiosity. In a deeply...

In the 1960s drug-resistant strains of malaria emerged, making the disease even deadlier than before. Then, pharmaceutical scientist Tu Youyou discovered a promising new remedy buried within the pages of ancient Chinese texts.

Rob Forbes, the founder of Design Within Reach, shows a gallery of snapshots that inform his way of seeing the world. Charming juxtapositions, found art, urban patterns -- this slideshow will open your eyes to the world around you.

The Limb of the Sun

Bumblebees fly, lights turn on, and you can ride a bike without falling over. We all know these things to be true, but what you may not know is the real reason behind why they work. Join Olivia to bust seven myths about motion.

Noah Feldman makes a searing case that both politics and religion -- whatever their differences -- are similar technologies, designed to efficiently connect and manage any group of people.

If the earth is spinning to the east at 1000 miles per hour... why can't we fly west more easily?

Escaping slavery; risking everything to save her family; leading a military raid; championing the cause of women's suffrage; these are just a handful of the accomplishments of one of America's most courageous heroes. Janell Hobson...

The underworld is overcrowded, and Zeus has ordered Hades to let some spirits out. Hades arranges all the souls of the dead in a line before Cerberus. When one of his three heads bites down on the soul in front of it, they'll get...

You can find out how to fairly divide rent between three different people even when you don't know the third person's preferences! Find out how with Sperner's Lemma.

Want to help map the world? Community builder Rebecca Firth explains how the Humanitarian OpenStreetMap Team (HOT) is using open-source software powered by volunteers to put one billion people on the map in the next five years. (This...

How do you milk an almond? #shorts #science

Let's talk about some of the awesome single dads out there in the animal kingdom!

In which John Green teaches you about founding father and third president of the United States, Thomas Jefferson. Jefferson is a somewhat controversial figure in American history, largely because he, like pretty much all humans, was a...

Is Immigration good or bad? Immigration is a touchy subject in the United States. The 2016 election has been filled with debate about the subject, and both proponents and opponents have lots of reasons for their stance. But, this is a...

Some chefs swear by copper pots and pans, but they are much more expensive than other materials. Are they worth it? Well, it all comes down to electrons!

Want a Pineapple? If you want a pineapple, it's possible you can just run down to the store and get one. But, if you wanted to grow one, that's a lot more difficult depending on where you live. In this episode of Crash Course Kids,...

Alix Generous is a young woman with a million and one ideas -- she's done award-winning science, helped develop new technology and tells a darn good joke (you'll see). She has Asperger's, a form of autistic spectrum disorder that can...