Crash Course
Language, Voice, and Holden Caulfield: The Catcher in the Rye Part 1
In which John Green examines JD Salinger's novel The Catcher in the Rye. John pulls out the old school literary criticism by examining the text itself rather than paying attention to the biographical or historical context of the novel...
Crash Course Kids
Following the Sun
Have you ever wondered why your shadow is longer sometimes and shorter others? It turns out it all has to do with that marvelous big ball of light in the sky; The Sun! This first series is based on 5th grade science. We're super excited...
Crash Course
What Are the Different Types of Cyclones? Crash Course Geography
Today we’re going to talk about two types of cyclones: mid-latitude cyclones and tropical cyclones. Mid-latitude cyclones are huge weather systems that bring day-to-day weather in the mid-latitudes. They're the reason the weather is...
Crash Course
Immune System, part 2: Crash Course A&P
In the penultimate episode of Crash Course Anatomy & Physiology, Hank explains your adaptive immune system. The adaptive immune system's humoral response guards extracellular terrain against pathogens. Hank also explains B cells,...
Crash Course
Nuclear Chemistry Part 2: Fusion and Fission - Crash Course Chemistry
Continuing our look at Nuclear Chemistry, Hank takes this episode to talk about Fusion and Fission. What they mean, how they work, their positives, negatives, and dangers. Plus, E=mc2, Mass Defect, and Applications of Fission and Fusion...
Crash Course
How Did Religion Spread Along the Silk Road? Crash Course Geography
Today we’re going to talk about the collection of routes known as the Silk Roads, and explore how worldview and other ideas spread along those trade routes. The Silk Roads are responsible for everything from the spices we use when we...
Crash Course
Tricksters: An Introduction: Crash Course World Mythology 20
This week, Mike introduces you to Tricksters, starting with Anansi, the West African trickster god who is also sometimes a spider. Tricksters are, well, tricky. They're wise and foolish, they're promiscuous and amoral, but in a lot of...
Crash Course
What Are Ecosystems? Crash Course Geography
Today we're going to take a closer look at ecosystems -- which are communities of living organisms in an area interacting with their environment -- and how this relationship between the amount of energy a place receives and the movement...
Crash Course
Where and Why Do People Move? Crash Course Geography
People have been migrating and transplanting since before recorded history, and understanding the reasons why people migrate can help explain some of the cultural, economic, and political patterns we see around the world. Today, we’re...
Crash Course Kids
Material Magic
Did you know we can actually make diamonds in a lab? It's true! We can! And this is both really good and really cool. In this episode of Crash Course Kids, Sabrina shows us how materials scientists have done just that and why it's so...
Crash Course
The Industrial Revolution: Crash Course European History
We've talked about a lot of revolutions in 19th Century Europe, and today we're moving on to a less warlike revolution, the Industrial Revolution. You'll learn about the development of steam power and mechanization, and the labor and...
Crash Course
Italian and German Unification: Crash Course European History
So, we haven't talked much about Italy and Germany so far in Crash Course Euro, and that's because prior to the mid-19th century, those two nation-states weren't really a thing. Today we'll look at how Italy and Germany pulled it...
Crash Course
The Black Panther Party: Crash Course Black American History #39
Many organizations have made it their mission to expand the rights of Black Americans. The NAACP and the Urban League are examples of influential organizations with long histories. But a long history or extensive membership isn't always...
Crash Course
Rap and Hip Hop: Crash Course Black American History #47
Music is an integral part of Black American culture. Today, Clint Smith will teach you about rap & hip hop, and the cultural significance of artists including Public Enemy, Wu-Tang Clan, the Notorious B.I.G., Tupac, N.W.A., Queen...
Crash Course
Population Ecology: The Texas Mosquito Mystery - Crash Course Ecology
Population ecology is the study of groups within a species that interact mostly with each other, and it examines how they live together in one geographic area to understand why these populations are different in one time and place than...
Curated Video
The French Revolution: Crash Course World History
In which John Green examines the French Revolution, and gets into how and why it differed from the American Revolution. Was it the serial authoritarian regimes? The guillotine? The Reign of Terror? All of this and more contributed to the...
Curated Video
Rama and the Ramayana: Crash Course World Mythology
The next entry in our parade of heroes is Rama, the protagonist of the Ramayana, one of India's oldest stories. We're going to be talking about Rama's importance to Hindu culture, and how Rama fits into Campbell's idea of the Hero's...
Crash Course
Enlightened Monarchs: Crash Course European History
Last time we learned about the Enlightenment, and the philosophers and thinkers whose ideas would shape governance for hundred of years. This week, we're learning how monarchs across Europe were influenced by those ideas. Adoption of...
Curated Video
Coal, Steam, and The Industrial Revolution: Crash Course World History
In which John Green wraps up revolutions month with what is arguably the most revolutionary of modern revolutions, the Industrial Revolution. While very few leaders were beheaded in the course of this one, it changed the lives of more...
Crash Course
Fiscal Policy and Stimulus: Crash Course Economics
In which Jacob and Adriene teach you about the evils of fiscal policy and stimulus. Well, maybe the policies aren't evil, but there is an evil lair involved. In this episode we learn how government use taxes and spending influence the...
Crash Course Kids
Land and Water
Remember Sol, the closest star to Earth? We like to call it The Sun and we haven't talked about it in a little while. One interesting thing about the energy we get from the sun is that it's not absorbed the same way by different...
Crash Course Kids
Severe Weather
So, what's the difference between 'weather' and 'severe weather'? Is it just how hard the wind is blowing? Is it just thunder and lighting? Well, it can be some or all of those things. In this episode of Crash Course Kids, Sabrina talks...
Crash Course
Money and Finance: Crash Course Economics
So, we've been putting off a kind of basic question here. What is money? What is currency? How are the two different. Well, not to give away too much, but money has a few basic functions. It acts as a store of value, a medium of...
Crash Course
The Age of Exploration: Crash Course European History
The thing about European History is that it tends to leak out of Europe. Europeans haven't been great at staying put in Europe. As human beings do, the people of Europe were very busy traveling around to trade, to spread religion, and in...