Humans make a lot of garbage every day, and a lot of it ends up in big, smelly dumps. Luckily, there are things we can do to reuse a lot of our garbage and keep the Earth healthy and clean! Join Jessi and find out how!

So it's February 29th and we have 366 days this year instead of 365- what's the deal with Leap Years?

Plot often trumps reality when portraying space in movies and, as a result, many films are full of inaccuracies. So how much fiction is actually written into some of our favorite movies? Movies mentioned (and potentially spoiled) in this...

Nature creates some pretty amazing things, and one of the largest of these is The Grand Canyon!

We’ve talked about different materials engineers use to build things in the world, but there’s a special category of materials they turn to when building things to go inside our bodies. In this episode we’ll explore the world...

In the world of chemistry, an "organic" compound is often described as anything with carbon in it, and "organic chemistry" is the study of carbon compounds, but there is actually no single definition of what "organic" means in chemistry,...

Transhumanism is a scientific philosophy that says technology will solve all our human biological constraints and that immortality is right around the corner (well not RIGHT around the corner, but WAYYY closer). They envision a world of...

You decide to do something dangerous or stupid, and somewhere in your mind you know it's risky, but you do it anyway. But why?

Water travels... a lot. In fact, the water cycle is amazing and takes water all over the planet by using evaporation, condensation, and precipitation. In this episode of Crash Course Kids, Sabrina shows us how the water cycle works and...

Does your heart rate have an upper limit and could you ever reach it?

So, have you ever wondered why we have seasons? Or maybe where the sun goes when it's night time? *Hint: It doesn't actually go anywhere* In this episode of Crash Course Kids, Sabrina talks about the Earth's rotation and revolution and...

We owe a lot to our moon. Beautiful moonlit walks, higher tides, and regular seasons - all are made possible by our little rocky friend. But what would happen if we picked up a second moon?

In which John Green teaches you about the Mughal Empire, which ruled large swaths of the Indian Sub-Continent from 1526 to (technically) 1857. While John teaches you about this long-lived Muslim empire, he'll also look at the idea of...

Population III stars were the very first stars in our universe and far larger than any we can see today. Where are they now?

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...

Consider a bat that is infected with several deadly viruses, including ones that cause rabies, SARS, and Ebola. While this diagnosis would be lethal for other mammals, the winged wonder is totally unfazed, and may even spend the next 30...

You've had a lot of fun learning new stuff with us on SciShow Kids, but have you ever wondered how and why you remember all that awesome knowledge? Join Jessi and Squeaks to learn about how your brain helps you learn, and way more!

Great Goddesses: Crash Course World Mythology #13

We need a more considered approach to using social media for social justice, says writer and activist Ione Wells. After she was the victim of an assault in London, Wells published a letter to her attacker in a student newspaper that went...

Hank reviews the latest in science news, including the discovery of Element 115, the biggest volcano on Earth, and new insights into what it might mean to have small testicles.

Today Hank brings us the news of a unique astronomical discovery - a rogue planet. He also allays our fears of an apocalyptic collision with Earth. So, this new planet is awesome, but it needs a different name - CFBDSIR...

Loneliness isn’t much fun, but it might also be harmful to your heart—not just in a metaphorical sense, but your actual physical heart, as well as some of your body's other functions.

Throughout this series, and in our real lives, we've seen the chaos and devastation that outbreaks can cause. But there's good news! Eventually, outbreaks come to an end. In this episode, we'll look at some of the important tools of...

Our image of dinosaurs has been constantly changing since naturalists started studying them about 350 years ago. Taken together, these pictures can tell us a whole lot about just how much we have learned. Let's explore the history of...