The ten women in this chorus have all been sentenced to life in prison. They share a moving song about their experiences — one that reveals their hopes, regrets and fears. "I'm not an angel," sings one, "but I'm not the devil." Filmed at...

What is the derivative of a^x? Why is e^x its own derivative? This video shows how to think about the rule for differentiating exponential functions.

On this Space Time Journal Club we look at how gravitational waves can be used to search for extra dimensions of space!

What if every light bulb in the world could also transmit data? At TEDGlobal, Harald Haas demonstrates, for the first time, a device that could do exactly that. By flickering the light from a single LED, a change too quick for the human...

After a massive storm tears through the Hex Archipelago, you find five grizzled survivors in the water. As an act of gratitude for saving them, they reveal a secret _ the island they were just on holds some buried treasure. But when the...

Paul Andersen explains how the behavior of various organisms is shaped by natural selection. The action of phototropism and the timing of photoperiodism have both been shaped by the relative availability of light. Courtship in the bower...

This is episode 6 of our animated series "Think Like A Coder." This 10-episode narrative follows a girl, Ethic, and her robot companion, Hedge, as they attempt to save the world. The two embark on a quest to collect three artifacts and...

The Drake Equation tells us the likelihood that there are other advanced technological civilizations waiting for us among the stars. In this episode of Space Time we challenge you to use the Drake Equation to help us determine how near...

The silence of the galaxy and the resulting Fermi Paradox has perplexed us for nearly 50 years. But our most recent surveys of the Milky Way finally allow us to draw scientific conclusions about the depressingly persistent absence of...

Scientists say that we might be looking at the first extinction caused by whaling, and on an entirely different note, a discovery involving bed bugs and STIs.

Your brain does a lot to smooth out your visual experience of the world… including the closest thing we have to time travel.

In some cartoons, the one with a bigger brain is often described as "smart," but is it true in real life?

Mathematician Mark Kac asked the question "Can we hear the shape of a drum?" It was a question that took over 20 years to answer. Sine waves, fundamental frequencies, eigenvalues, this episode has got it all!

What's the best country to live in? Is it the one with the best food? The longest life expectancy? The best weather? For the past 70 years, most governments have relied heavily on a single number: the Gross Domestic Product, or GDP. But...

There are lots of unsolved mysteries in the world of math, and many of them start off with a deceptively simple premise, like: What's the biggest couch you can slide around a 90-degree corner? Chapters MOVING SOFA PROBLEM 0:35 MOSER'S...

The pigments in our food all get destroyed on their way through our digestive system...so where do the colors of our poop and pee come from? ________________________ FYI: We try to leave jargon out of our videos, but if you want to learn...

Shakespeare sometimes gets a bad rap in high schools for his complex plots and antiquated language. But a quick peek into the rhythm of his words reveals a poet deeply rooted in the way people spoke in his time - and still speak today....

Some paleontologists wonder how many species of dinosaurs are left for us to discover, and how many fossils of them are out there. Find out how long the experts think the world's supply of dinosaur fossils will last!

Your antivirus squad is up against a code that's hijacked your mainframe. What you've learned from other infected systems, right before they went dark, is that it likes to toy with antivirus agents in a very peculiar way— and you're the...

Tennis legend Billie Jean King isn't just a pioneer of women's tennis -- she's a pioneer for women getting paid. In this freewheeling conversation, she talks about identity, the role of sports in social justice and the famous Battle of...

We all want to make the world better -- but how? Jamais Cascio looks at some specific tools and techniques that can make a difference. It's a fascinating talk that might just inspire you to act.

Jacqueline Novogratz shares stories of how "patient capital" can bring sustainable jobs, goods, services -- and dignity -- to the world's poorest.

Some people have more taste buds than the rest of us. They're called supertasters, and they can taste things others can't.

Stars are our stellar alchemists. They spend their entire lifespan creating and molding elements. In their final moments, a supernova spreads these elements out into the universe, providing the building blocks for new stars, planets, and...