As Squeaks continues to prepare for his big trip on a plane, he and Jessi learn the science behind how airplanes fly!

Jessi and Squeaks are taking a trip soon! But Squeaks has never been on a plane before, and he's a little nervous about it. Let's learn what it's like to go through the airport and to be on an airplane, so we can help squeaks feel a...

Are the five senses really all that we use to take in the world around us, or is it a little more complex than that, with psychology playing a more prominent role than you might have thought?

A cat's bladder can only store a golf ball's worth of urine. For humans, it's a coffee mug and for elephants, a kitchen trash can. An elephant's bladder is 400 times the size of a cat's, but it doesn't take an elephant 400 times longer...

We here at SciShow compiled a list of videos based on popular requests. Hank Green hosts with this winter themed episode!

In which Mike Rugnetta teaches you about Ma'ui, prominent hero of many cultures in Oceania, aka the Pacific Island nations. Ma'ui is just the kind of hero we're interested in here at Crash Course. He's a culture hero, he's a an...

The world of milks is much wider than your coffee shop oat variety. From rhinos to cockroaches, milk is essential for the development of many animals' offspring.

Although one third of the population suffers from motion sickness, scientists aren't exactly sure what causes it. Like the common cold, it's a seemingly simple problem that's still without a cure. And if you think it's bad on a long...

Traditional COVID tests take time and specialized personnel, but a new kind of test that uses nanotechnology could expedite the process.

Wouldn't it be nice if our transportation was as sleek as in The Jetsons or Futurama? Flying cars are cool, but what about a giant network of human-sized tubes that run through buildings and across entire cities? Well guess what? The...

According to the cosmological principle, the universe is more or less the same in all directions. But what happens when we put this to the test?

Some dogs just seem to love watching TV. But are they really watching what we see?

We need a global weather service for water, says entrepreneur and TED Fellow Sonaar Luthra. In a talk about environmental accountability, Luthra shows how we could forecast water shortages and risks with a global data collection effort...

Symmetric keys are essential to encrypting messages. How can two people share the same key without someone else getting a hold of it? Upfront asymmetric encryption is one way, but another is Diffie-Hellman key exchange.

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...

Today we’re talking about mass transfer. It doesn’t just apply to objects and fluids as a whole, but also to the individual molecules and components that make them up. We’ll see that transfers of mass need their own driving force,...

Why do chickens and turkeys have white meat and dark meat? And, like, gross, but .. do humans have the same thing? It's all about our muscles: what they're made of, and what they're made for. Quick Questions has the answers!

June 28 is Tau Day! Join SciShow as we celebrate circles by exploring the many uses of twice pi.

An atom smasher, or particle accelerator, collides atomic nuclei together at extremely high energies, using engineering that exploits incredibly cold temperatures, very low air pressure, and hyperbolically fast speeds. Don Lincoln...

When people run around on a hot summer day, their sweat can help them cool off! But dogs can't sweat, and they have big, furry coats! So what can they do to stay cool?!

In this week's news, Hank explains how earthworms are doing nanotechnology for us, Americans will soon be eating genetically modified salmon, the Russians are going back to space, and another reason to drink less soda.

Our energy future depends on nuclear fusion, says Michel Laberge. The plasma physicist runs a small company with a big idea for a new type of nuclear reactor that could produce clean, cheap energy. His secret recipe? High speeds,...

We've been making particle accelerators for more than a century and have accelerated particles to more than 99.9999% the speed of light. But our accelerators are nothing compared to some of the ones we've found in nature!

Why are some athletes able to crush world records when other records remain unbroken for years? The answer has to do with the kind of materials used in the competition and the type of athletic event one is competing in. Hank Green...