In which John Green concludes the Crash Course Literature mini-series with an examination of the poetry of Emily Dickinson. Sure, John explores the creepy biographical details of Dickinson's life, but he also gets into why her poems have...

Tinnitus has been bothering humanity since Ancient Babylon, plaguing everyone from Leonardo da Vinci to Charles Darwin. Today, roughly one in seven people worldwide experiences this auditory sensation. So what exactly is tinnitus, and...

Hank acknowledges the amazing feat performed by Felix Baumgartner and answers many of your questions about why it is so amazing.

Scientists have figured out that some birds come with built-in alarm calls in their wings

Is outer space really the silent and lifeless place it's often depicted to be? Perhaps not. Astrophysicist and musician Matt Russo takes us on a journey through the cosmos, revealing the hidden rhythms and harmonies of planetary orbits....

Over the course of human history thousands of languages have developed from what was once a much smaller number. How did we end up with so many? And how do we keep track of them all? Alex Gendler explains how linguists group languages...

In this video Paul Andersen explains how the energy of a wave if directly related to the amplitude of a wave. The wave energy of a sound wave is the volume of the wave.

If you happen to be a frequenter of urinals, odds are you've seen one that has a little block at the bottom of it. But what does it do and why are you peeing on it?!

Here at SciShow Kids we're gearing up for the spookiest time of year! And today, we're going to learn all about ravens! Ravens may give you the creepy crawlies, but they have some awesome skills and behaviors that make them very clever...

Clinical psychologist Meg Jay has a bold message for twentysomethings: Contrary to popular belief, your 20s are not a throwaway decade. In this provocative talk, Jay says that just because marriage, work and kids are happening later in...

In this video Paul Andersen explains how the wave speed measure the speed of a wave through a medium. The medium determines the speed of the wave. The velocity of the wave is equal to the product of the wavelength and the frequency of...

Your brain relies a lot on context to tell you what sounds are bouncing around in your ears, and without enough of that context it can get a little confused.

How does music shape us? Digital ethnomusicologist and TED Fellow Kyra Gaunt studies how Black girls can preserve the integrity of their own voices while listening, dancing and singing to pop songs largely engineered by men, often with...

This animation is part of the TED-Ed series, "There's a Poem for That," which features animated interpretations of poems both old and new that give language to some of life's biggest feelings. [Poem by Brendan Constantine, directed by...

Next stop on our tour of engineering’s major fields: electrical engineering. In this episode we’ll explore the history of telecommunications, electric power and lighting, and computers. We’ll introduce topics like magnetism, electrical...

We can tell which direction a sound is coming from using just two ears, but how do we do that? What would happen if our ears switched sides?

In something like water, particles like electrons can beat light in a race - and cause a blue glow to prove it.

Music plays a big part in many of our lives. Whether you just like to listen or you enjoy playing an instrument, music is powerful. So what is music? How does it work? What are the physics of music? In this episode of Crash Course...

It used to be that you could get on a Concorde jet and fly across the Atlantic ocean faster than the speed of sound, but what does the future hold for supersonic flight?

You don't have to fight feral ghouls to be familiar with the clicking sound of a geiger counter, but what exactly makes these radiation detecting devices click?

We aren’t the only animals that pass gas, but other animals have found some much more creative ways to harness the power of their farts!

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You know what's amazing? That we can talk to people, they can make meaning out of it, and then talk back to us. In this episode of Crash Course Psychology, Hank talks to us and tries to make meaning out of how our brains do this thing...

So... how big is the Universe? It's big... really big... no, bigger than that... it's big. In this episode of Crash Course Kids, Sabrina gives us some perspective on this whole Universe thing and how we fit into it.

Radio, Cinema, and Television have been staples in news coverage, entertainment, and education for almost 100 years. But... where did they all come from? Who started what and when and why? In this episode, Hank Green talks to us about...