If gravity is so attractive, why doesn't the earth just crash into the sun? Or the moon into the earth? The answer: Stable Orbits

Learn the about the physics that allows bikes to stay upright and in motion, even without a rider.

For years, geologists have been searching for an explanation for two strange blobs of Earth's mantle that are denser than the rest. It turns out, they may not be original parts of Earth at all.

The Ice Bucket Challenge raised millions of dollars for research into treatments for ALS, or Lou Gehrig's disease. Where did that money go? Into characterizing new genes that we may be able to target with chemotherapy drugs like...

Adamantium, bolognium, dilithium. Element Zero, Kryptonite. Mythril, Netherite, Orichalcum, Unobtanium. We love the idea of fictional elements with miraculous properties that science has yet to discover. But is it really possible that...

Carbon dating transformed fields like archeology and paleontology, but its use might be in danger.

You may have thought that crocodile tears were just a figure of speech, but it turns out they're real, and may help those of us with dry eyes.

3 Surprising Things Matter Does Under Extreme Pressure

Are you slowly killing your car by using below average gas? Olivia talks about octane ratings and how your vehicle is designed to handle them. Hosted by: Olivia Gordon

Hosted by: Hank Green

Insects can communicate with each other about all kinds of things, but instead of using words, they use… you guessed it! Organic Chemistry! Insects can send signals to each other by secreting compounds, and one such compound used by...

In 2009, researchers ran a simple experiment. They took everything we know about our solar system and calculated where every planet would be up to 5 billion years in the future. They ran over 2,000 simulations, and the astonishing...

Scientists have been searching for alien life by honing in on the existence of liquid water, but we might be overlooking some types of life out there that doesn't need water at all.

Things get weird under pressure.

David Thouless, Duncan Haldane, and Michael Kosterlitz won the Nobel Prize in Physics in 2016 for discovering that even microscopic matter at the smallest scale can exhibit macroscopic properties and phases that are topological. But -...

We know the negative images of Africa -- famine and disease, conflict and corruption. But, says Ngozi Okonjo-Iweala, there's another, less-told story happening in many African nations: one of reform, economic growth and business...

You may have thought that crocodile tears were just a figure of speech, but it turns out they're real, and may help those of us with dry eyes.

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...

SciShow explains radiocarbon dating, the best way to date a dead thing!

Box-shaped fish might seem like they don't have the most efficient body shape, but there are some surprising perks to being an underwater cuboid creature.

Caviar or fruity ball? Whatever you like! Here’s a rundown of how to spherify your own edible bubbles and why they could help to reduce waste.

We're used to talking about planets as spherical objects, but a donut-shaped planet is theoretically possible. What would life be like on one of these?

In this video Paul Andersen explains how ionic solids form when cations and anions are attracted. When atoms lose or gain electrons they form ions. The strength of the attraction between ions is based on the amount of charge and the...

Hank introduces you to the latest element to be created -- and explains why we make them in the first place -- plus the science of exploding whales. It's a thing, people.