Thanks to Google Making and Science for supporting this series, and to Sean Carroll for collaborating on it! AMAZING Interactive Entropy explainer by Aatish Bhatia: http://aatishb.github.io/entropy/ This video is about why entropy gives...

This video is about the Portal Paradox - a paradox in the video game Portal (and Portal 2) regarding whether or not a companion cube passing through a moving portal plops out of the other end with no speed (velocity, momentum), or shoots...

Taking design cues from origami, robotician Jamie Paik and her team created "robogamis": folding robots made out super-thin materials that can reshape and transform themselves. In this talk and tech demo, Paik shows how robogamis could...

The universe began in a Big Bang nearly fourteen billion years ago, and has been expanding ever since. But how does the universe expand and what is it expanding into? Sajan Saini explains the existing theories around the Big Bang and...

Billions of galaxies, each with billions of stars, each with .... rather a lot of particles in them. And then there's dark matter, black holes, planets, and the particles and radiation in between the stars and galaxies. But.... is the...

Can the way you speak and write today predict your future mental state, even the onset of psychosis? In this fascinating talk, neuroscientist Mariano Sigman reflects on ancient Greece and the origins of introspection to investigate how...

Divergence, curl, and their relation to fluid flow and electromagnetism

Today is exciting, because Jessi and Squeaks are making parachutes! Tag along to learn how you can make your own, and what forces are being used to make your parachute work!

The black hole at the center of the Milky Way is quiet now, but new evidence suggests that it woke up around 3.5 million years ago. And Enceladus may have the the building blocks of the building blocks of life.

Dark Energy is what we call the mysterious force that seems to be pushing the universe apart. By some calculations, it makes up 70% of everything in nature. Or...maybe it doesn’t exist at all! Plus, Juno’s observations give us new...

Extreme environments full of life on Earth have led researchers to expand the definition of habitability to something that includes many more planets, potentially leading us to evidence of living things in a dramatically shorter time!...

In which John Green, Hank Green, and Emily Graslie teach you about our Sun, and the formation of the planets. We're going to focus on the formation and development of the Earth, because that's where people live. You'll learn about the...

Astronomers have found the first asteroid orbiting closer to the Sun than Venus, and recently, some scientists have been looking at Earth, trying to understand the origins of our protective magnetic field.

As computers have gotten more powerful, they’ve completely transformed how we explore the solar system. And along the way, the space industry has given computer science a boost too.

The Pioneer 10 and 11 probes were launched to explore outer space, but in the 80s scientists discovered they were veering off-course, and we had no idea why!

The star-mapping satellite Gaia has found more than 20 stars speeding across the Milky Way toward intergalactic space. There are just a few things that can slingshot a star out of a galaxy and all of them take some extreme gravitational...

"A political cartoon is a barometer of freedom," says Rayma Suprani, who was exiled from her native Venezuela for publishing work critical of the government. "That's why dictators hate cartoonists." In a talk illustrated with highlights...

In this talk and tech demo, filmmaker Diego Prilusky introduces the next chapter in moviemaking: volumetric video, a 360-degree experience powered by hundreds of cameras that capture light and motion from every angle. Check out how this...

TED curator Chris Anderson shares his obsession with questions that no one (yet) knows the answers to. A short intro leads into two questions: Why can't we see evidence of alien life? And how many universes are there?

We only know 4% of what the universe is made up of. Can we also know what lies beyond our galaxy ... and if there are undiscovered forms of matter? Luckily, we have space messengers - cosmic rays - that bring us physical data from parts...

Black Holes should have no entropy, but they in fact hold most of the entropy in the universe. Let's figure this out.

Geologists have a few ideas as to how rain affects mountains. But could rain also help mountains grow?

Well, here we are. It's the final episode of Crash Course Film Criticism and we're going to chat about one of the more polarizing films ever made: Stanley Kubrick's 2001: A Space Odyssey. On the surface, 2001 tells the story of human...

The world's most entertaining and useless self-help guide, from the brilliant mind behind the wildly popular webcomic xkcd and the #1 New York Times bestsellers What If? and Thing Explainer For any task you might want to do, there's a...