The world of cryptocurrency and NFTs is riddled with controversy, but somewhere amid all of that blockchain there's some reckoning with reality that must be done.

People love eating pizza, but every style of pie has a different consistency. If "New York-style"--thin, flat, and large--is your texture of choice, then you've probably eaten a slice that was as messy as it was delicious. Colm Kelleher...

Today we continue our exploration of the Water Cycle by drinking some dinosaur pee. Yep! Well, it's a little less gross that it sounds. It turns out that all of the water on Earth is just constantly recycled in what we call a closed...

Eyeballs are unique organs, providing many animals with the ability to interpret the light waves in the world around them, but what are these squishy parts made of?

From launching a new satellite, to finding diamonds from a lost world, researchers have been hard at work transforming how we think about our planet, the solar system, and the rest of the universe.

Web cartoonist Randall Munroe answers simple what-if questions ("what if you hit a baseball moving at the speed of light?") using math, physics, logic and deadpan humor. In this charming talk, a reader's question about Google's data...

We’re in the middle of a rapid, unprecedented, and world-changing increase in the intensity and scale of human activity on this planet.

Mr. Andersen demonstrates the azide-winkler method of dissolved oxygen analysis.

Join the Amoeba Sisters as they explore the excretory system! This video will first discuss two major functions of the excretory system before focusing on the nephron. The majority of this video will tour through the nephron while...

In this wide-ranging, thought-provoking talk, Kevin Kelly muses on what technology means in our lives -- from its impact at the personal level to its place in the cosmos.

Hank explains the latest developments in space research and the search for life, including the discovery that amino acids may be more common than we thought throughout the solar system, and the latest findings from the Mars Curiosity rover.

Paul Andersen explains how the long tail of the internet is opening up new possibilities for educational videos

There are batteries powering so many parts of our everyday lives, so today we’re going to talk about how they work and how we can make them better. We’ll explain how they provide power by discharging ions between a cathode and an anode,...

Traditional lab tests for disease diagnosis can be too expensive and cumbersome for the regions most in need. George Whitesides' ingenious answer is a foolproof tool that can be manufactured at virtually zero cost.

Maybe you have a dog or cat who greets you with a sneezing fit once you walk in the door from work. Is it possible you're the problem?

If you’re not lounging on the beach on a hot summer day, why would you think to put on sunscreen? Well, you might need sunscreen more often than you think.

We have new insights into the bizarre nature of lava planets, and the icy moon Europa may yet reveal some of her salty secrets.

Is it Better to Walk or Run in the Rain

Given $50 billion to spend, which would you solve first, AIDS or global warming? Danish political scientist Bjorn Lomborg comes up with surprising answers.

You’ve probably heard a lot about how climate change is affecting our planet, but did you know a warming climate also affects objects in space?

Our bodies get Vitamin D from the sun, but as dermatologist Richard Weller suggests, sunlight may confer another surprising benefit too. New research by his team shows that nitric oxide, a chemical transmitter stored in huge reserves in...

Da Vinci imagined a helicopter powered solely by human muscles. Now more than 500 years later, two teams are using advanced materials to try and make that dream come true. Hank and Catilin discuss these two teams and the Sikorsky Prize...

People ask Google everything under the sun. One of the most commonly searched questions in the world is “How Many Calories Should I have in a day?” Allow us at SciShow to explain.

In this video Paul Andersen explains how the wavelength is the distance between oscillations in a wave. In a longitudinal wave this might be the distance between areas of compression. In a transverse wave it might be the distance between...