Humans have a hard time with really big numbers, especially when it comes to DEEP TIME. The history of the Earth took a lot longer than you think, trust me. But I’m here to help you put it in perspective. With some string.

500 years before the Scientific Revolution, the mathematician Al-Hassan Ibn al-Haytham spent hours in a dark room studying the light that filtered in. Not only did he revolutionize how we literally see the world, he pioneered the...

Money. We all use it. But is it real? I mean, you can touch a coin or bill, but who decided that’s worth anything? And what about all those 1’s and 0’s getting swapped and traded by computers thousands of times per second? How are those...

Why does everyone use a 7 day week, and where did it come from? Where do the names of the days come from? And who can we blame for Mondays? Here’s the true story of one of the oldest human customs still in use today. It gets a little...

We've heard news of "peak oil" and "the end of the oil age" for years now, but we keep coming up with ways to find and pump more of it to the surface. Rising CO2 levels and the changing climate that results from burning fossil fuels mean...

This is a video about nothing. Hope you learn something!

There’s a lot of confusion out there about what is and isn’t a dinosaur. And you’d be forgiven for being kinda confused. Maybe paleontologists are just messing with us. Or… maybe the question of what is and isn’t a dinosaur goes deeper...

In September 1991, two hikers discovered a corpse emerging from the ice. Researchers soon realized they were looking at the mummified body of a man who'd lived about 5,300 years ago, and theorized he got caught in bad weather and froze....

Pseudoscience is a set of theories, methods, and assumptions that appear scientific, but aren't. In the worst cases, pseudoscience practitioners encourage this confusion to exploit people. But even when it's well-intentioned,...

The word "sustainability" gets thrown around a lot these days. But what does it actually mean for humanity to be sustainable? Environmental data scientist Hannah Ritchie digs into the numbers behind human progress across centuries,...

From the astonishing evolutionary advances of the Cambrian explosion to our present-day computing revolution, the trend of dramatic growth after periods of stability can be explained through the theory of the "adjacent possible," says...

Based on her work for a CIA task force aimed at predicting civil wars, political scientist Barbara F. Walter examines the rise in extremism and threats to democracies around the globe -- and paints an unsettling picture of the increasing...

In 1915, an exhibition of radical artworks opened in Russia. Many pieces pushed the boundaries of form and style, but one was particularly controversial: Kazimir Malevich's "Black Square." Criticized as simple and uninspired, Malevich's...

Contrary to common belief, jesters weren't just a medieval European phenomenon but flourished in other times and cultures. The first reliably recorded jester is thought to be You Shi, of 7th century BCE China. Jesters had unique...

From the 1650s through the late 1800's, European colonists descended on South Africa. They sought to claim the region, becoming even more aggressive after discovering the area's abundant natural resources. To support their claims to the...

During the 14th and 15th centuries, mercenaries known as condottieri dominated Italian warfare, profiting from— and encouraging— the region's intense political rivalries. As rulers competed for power and prestige, their disputes often...

20 million years ago, the ocean housed a creature so colossal that its stomach could reach volumes of almost 10,000 liters— big enough to fit an entire orca. It was the megalodon, the biggest shark to ever live. So, what was it like when...

What can we make of a design that shows up over and over in disparate cultures throughout history? Theorist Terry Moore explores "Penrose tiling" -- two shapes that fit together in infinite combinations without ever repeating -- and...

Saturn's rings are younger than Saturn, and the most spectacular sight in the Solar System is also disappearing. How do we know? By running our finger through some cosmic dust.

About 1.8–0.8 billion ago, the Earth went through a period known as the Boring Billion, where not a lot changed in terms of geology, evolution, or even the number of hours in a day. Some scientists call it “the dullest period in Earth’s...

Some plants can drink water from the air - and that has some weird effects on the forests where they live.

The concept of warm-blooded and cold-blooded animals is outdated because there are actually tons of different animal thermoregulation strategies.

The human population of the world will soon peak – and then decrease – thanks to a combination of two quickly changing economic and educational trends.

In 1990, fossil collectors in South Dakota stumbled across a dinosaur that turned out to be a really big deal. Not just because it was a T. rex – basically the most popular dino out there – or because it ended up in Chicago’s famous...