Going out in the sun can work wonders for your mood, but unfortunately too much UV exposure can do serious damage to your DNA. This damage occurs through a type of organic reaction called a pericyclic reaction. In this episode of Crash...

In 1985, scientists discovered that 60 carbon atoms could join up to form one big soccer ball shape: a buckyball! It's a strange little molecule.

In which John Green, Hank Green, and Emily Graslie teach you about what happened in the Universe after the big bang. They'll teach you about cosmic background radiation, how a bunch of hydrogen and helium turned into stars, formed...

Raindrops and snowflakes generally start to form around something else in the air, like a speck of dust, but sometimes that something else is bacteria.

Why do shell building living creatures live near the surface of the ocean? Learn how chemistry creates a dissolving depth for calcium and determines where shell builders can live.

How do we find planets -- even habitable planets -- around other stars? By looking for tiny dimming as a planet passes in front of its sun, TED Fellow Lucianne Walkowicz and the Kepler mission have found some 1,200 potential new...

"If you live in the northern hemisphere, there's a decent chance you're in a winter wonderland right now. Settle in with a hot drink for this winter compilation and learn about some of the interesting things that make winter wondrous!

The quantum world is weird. Today we're looking at a strange particle called a glueball that contains no matter...they're made of pure force!

SciShow Space describes a new phenomenon that might be out there: Stars made entirely out of metal. But it's not quite what it sounds like!

So, the stars made the elements, we're all made of star stuff, etc. But what does all this mean? This week Emily Graslie teaches you how the formation of chemical elements in the bellies of the earliest stars made life as we know it...

Why is the Solar System Flat?

Astronomers have thought for years that Earth was dry in the beginning, but a new paper suggests that Earth might have actually started out wet! And In other meteorite news, a new study of impact sites might give us new clues about...

For architect Ole Scheeren, the people who live and work inside a building are as much a part of that building as concrete, steel and glass. He asks: Can architecture be about collaboration and storytelling instead of the isolation and...

Hank shares three cool discoveries in space science, including a celestial crucible of phosphorous, noble gases found in a supernova, and plumes of water vapor on Europa.

When you think of a frozen object in space, you might think of Pluto, but stars themselves actually freeze.

Even the parts of our brains that don't control physical movement show a lot of rhythm, and that might be integral to how our brains...

Diamonds are iconic, but some of them might make others a little green with envy.

From towering mountains to pebbles along a river, the Earth is made of a huge variety of rocks. In today's episode, we're going to follow the rock cycle of a piece of granite in the Himalayan mountains, and as you'll see, every rock has...

Last week, the recipients of the 2017 Nobel Prizes were announced. We take a closer look at the winners of the Physiology and Chemistry Awards, whose breakthroughs change the way we study sleep, and allow us to look at microscopic...

Human cannibalism is a lot more common than you might think. Dive into its complex history and see its uses in medicine, cultural rituals and in times of survival. -- 15th century Europeans believed they had hit upon a miracle cure: a...

We don’t know what causes non-hereditary Parkinson's disease, but researchers have recently identified a gene that might help shed some light on those cases. And another paper suggests that the impact we're having on the frequency of...

In which John Green, Hank Green, and Emily Graslie teach you about what happened in the Universe after the big bang. They'll teach you about cosmic background radiation, how a bunch of hydrogen and helium turned into stars, formed...

Volcanoes can show nature's rage. What are the biggest eruptions we've witnessed in our history?

This week on Crash Course Mythology, Mike is teaching you about the archetypes that are often associated with male divinities. We're going to talk about Fathers & Sons, Kings & Judges, Saviors & Sages, Shamans, Tricksters, and Lords of...