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Polar and Non-Polar Molecules: Crash Course Chemistry #23
Molecules come in infinite varieties, so in order to help the complicated chemical world make a little more sense, we classify and categorize them. O…
1 week, 5 days ago
Animal Defense Systems: How Skin, Snot, and Cells Keep Us Healthy: Crash Course Biology #45
The world is full of microbes and viruses that can get us sick, but we’ve got an Avengers-style defense system ready to take them on. In this episode…
1 week, 5 days ago
What are the Patterns of Border Conflicts? Crash Course Geography #37
Today, we’re going to take a closer look at borders and the stories they tell. When we look at a map, the shapes we’re seeing can seem so permanent, …
1 week, 5 days ago
Reconstruction and 1876: Crash Course US History #22
In which John Green teaches you about Reconstruction. After the divisive, destructive Civil War, Abraham Lincoln had a plan to reconcile the country …
1 week, 5 days ago
When The Stars Turned On | Crash Course Pods: The Universe #4
"Is free will still in the equation?"
In this episode, the universe begins to become visible to itself. Dr. Katie Mack teaches John Green about the mo…
1 week, 5 days ago
Atomic Hook-Ups - Types of Chemical Bonds: Crash Course Chemistry #22
Atoms are a lot like us - we call their relationships "bonds," and there are many different types. Each kind of atomic relationship requires a differ…
1 week, 5 days ago
How Does Art Tell Stories? : Crash Course Art History #7
From cave paintings to public murals, humans have told stories with art for thousands of years. In this episode of Crash Course Art History, we disco…
1 week, 5 days ago
The Civil War Part 2: Crash Course US History #21
In which John Green teaches you how the Civil War played a large part in making the United States the country that it is today. He covers some of the…
1 week, 5 days ago
Nervous and Endocrine Systems: What Really Happens When You Step on a Lego: Crash Course Biology #46
If cells and organs never talked to each other, an animal would fall apart faster than a boy band after the popular one goes solo. Thankfully, that’s…
1 week, 5 days ago
The Vikings! - Crash Course World History 224
In which John Green teaches you about Vikings! That's right, one of our most requested subjects, the Vikings, right here on Crash Course. So what's t…
1 week, 5 days ago