Hunger claws at your belly. It tugs at your intestines, which begin to writhe, aching to be fed. Being hungry generates a powerful and often unpleasant physical sensation that's almost impossible to ignore. After you've reacted by...

How do we make seawater drinkable? And can that technology save California?!

Recently, humanity filled the periodic table up to atomic number 118, which nicely rounds out that row. But are we done yet? Have we discovered all of the different elements? And what is an "island of stability?"

You might already know that proteins are a fundamental part of your diet, but they're much more than that.

It's been raining for a few days where Jessi and Squeaks live, and the news even said that there may be a flood! Join Jessi to find out what a flood is, how they form, and how you can stay safe if there's a flood where you live!

The equator is a clear and accurate line around Earth that makes measuring latitude a precise science, but when it came to figuring out how to do that with longitude, British sailors were at a loss. Until they devised a competition.

A broken bone might seem worse than a sprain, but you'll get over it much more quickly.

If you’re trying to figure out where to plan on sheltering during the zombie apocalypse, it’s essential to know whether zombies sink or float!

With almost 100 mystery novels, each one a cleverly constructed puzzle box of clues, misdirection, and human drama, Agatha Christie is the best-selling novelist of all time. Her eccentric detectives, clever clues, and simplified suspects...

Mister Brown and Squeaks are learning all about different cycles, or patterns, as they get ready for summer!

Probiotics eat our food for us and help us digest. Gross? Or amazing?? Hank explains why we need bacteria and how cool it is.

Why are tattoos permanent? How do you deliver the ink? And how do you remove a tattoo if you no longer want it?

The vast majority of people who've lost a limb can still feel it - not as a memory or vague shape, but in complete lifelike detail. They can flex their phantom fingers and sometimes even feel the chafe of a watch band or the throb of an...

How does light speed up after leaving glass or water? What do light and the President of the United States have in common?

For as long as Hank has hosted Crash Course, he's wanted to host a series about the history of science. We've been asking big questions for a really long time and we've all wanted to explore how we've sought to answer those questions...

Conventional wisdom frames the ideal career path as a linear one -- a ladder to be climbed with a single-minded focus to get to the top. Career development consultants Sarah Ellis and Helen Tupper invite you to replace this outdated...

A caterpillar hatches from an egg, makes a cocoon, and emerges a fully-grown, beautiful butterfly. But, during its time in the cocoon, the caterpillar melts its body into bug goo... then even weirder stuff happens.

We're headed back to Japan, this time in the Edo period to follow up on Noh theater, which had gone out of style last time we checked in. Now, under the Shoguns, there's couple of really interesting types of drama on the scene. Kabuki is...

Jessi and Squeaks adopted a new fish! They have him all set up in a nice fish tank, but now they have a big question: how do fish breathe underwater?!

You might guess that big city subways would be filled with all sorts of nasty pathogens just waiting to infect the nearest unsuspecting human, but science doesn’t back this up at all.

Despite what you might've seen on some wilderness-survival show, there's increasing evidence that your pee isn't sterile. So don't do anything crazy with it. Sci Show explains!

Calls for authenticity at work ask for passionate people with diverse, fresh perspectives who challenge old ways of thinking. But too often workplace culture fails to support the authenticity of professionals of color and other...

Beavers have done more to shape North American landscapes than any animal beside humans. We don't notice them much today because there aren't many left, but before colonization, North America was home to hundreds of millions of these...

Want to learn how plants move water around inside them? Or do you just want to turn a stalk of celery purple? Then try our amazing color-changing celery experiment, in class or at home!