In this explosive episode of SciShow Quiz Show, Hank Green and SciShow writer Dave Loos test their knowledge of diamonds, the environment, and the many reasons why humans are very strange creatures.

We use algorithms every day for things like image searches, predictive text, and securing sensitive data. Algorithms show up all over nature, too, in places like your immune system and schools of fish, and computer scientists...

Just now, somewhere in the universe, a star exploded. In fact, a supernova occurs every second or so in the observable universe. Yet, we’ve never actually been able to watch a supernova in its first violent moments. Is early detection...

Why is 'x' the symbol for an unknown? In this short and funny talk, Terry Moore gives the surprising answer.

New York City residents produce 11,000 tons of garbage every day. Every day! This astonishing statistic is just one of the reasons Robin Nagle started a research project with the city's Department of Sanitation. She walked the routes,...

There’s one kind of planet we’ve found more often than any other in the universe so far: mini-Neptunes. Now, some scientists think they’ve figured out why there are just so many of them.

Though we’ve been able detect thousands of exoplanets in the last few decades, we’ve now directly imaged an exoplanet that changes our whole perspective on how we think planets like Jupiter form!

Society has a set of stories it tells itself about who refugees are and what they look like, says documentarian and TED Fellow Feras Fayyad. With his films, he's on a mission to separate the facts about refugees from fiction, as a form...

Artist and TED Fellow Aparna Rao re-imagines the familiar in surprising, often humorous ways. With her collaborator Soren Pors, Rao creates high-tech art installations -- a typewriter that sends emails, a camera that tracks you through...

In 2009, a team of Japanese astronomers discovered Himiko Blob which is a very bright galaxy, its light originally wouldn’t be able to make it through the atmosphere. So why were those astronomers able to discover it?

MU69 seems to be much flatter than we thought and the Gaia space telescope can tell us where galaxies have been and, maybe, where they're going.

We've only found one planet in a globular cluster, where gravitational interactions should usually rip baby planets apart, but that's not all that excites astronomers about PSR 1620-26 b.

So we all know that breathing is pretty important, right? Today we're going to talk about how it works, starting with the nameless evolutionary ancestor that we inherited this from, and continuing to the mechanics of both simple...

To some they look like bow-legged cowboys. To others, swaggering pirates. Either way, the two-legged molecules known as motor proteins are what get the job of living done in most of your cells.

To some they look like bow-legged cowboys. To others, swaggering pirates. Either way, the two-legged molecules known as motor proteins are what get the job of living done in most of your cells.

Today we’re going to talk about glaciers. These behemoth globs of compressed ice and snow moving across the land created fertile soils and physical features while also serving as frozen time capsules. They recorded both Earth’s climatic...

In 2008, the global financial crisis decimated Latvia. As unemployment skyrocketed, the government slashed public funding and raised taxes, while providing relief to the wealthy and large businesses -- all without backlash or protest...

* Viewer discretion advised. This video includes discussion of mature topics and may be inappropriate for some audiences. For five years, young Emmanuel Jal fought as a child soldier in the Sudan. Rescued by an aid worker, he's become an...

Hank talks about a shiny element that has fascinated humans for millenia.

If you’re someone who is constantly coughing up mucus, you might not actually have allergies. There’s a possibility that your organs are flipped and you don’t even know it!

The sun may have thousands of stellar siblings, many of them probably just like it, elsewhere in the galaxy. Find out how astronomers are looking for them, and learn about a match that could be our star's long-lost sibling!

If wormholes aren't just convenient plot devices for science fiction writers, they're still much weirder than anything we could make up.

SciShow Space takes you to the moon! Learn about the competing theories about how Earth's closest neighbor formed.

You’d think it would be easy to tell if an object in space was a star or a planet - is it big, hot, and shining? It’s a star! Small, cool, and made of rock and gas? Planet! But cosmic oddities know as brown dwarfs remind us that the...