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CrashCourse

At Crash Course, we believe that high-quality educational videos should be available to everyone for free! Subscribe for weekly videos from our current courses! The Crash Course team has produced more than 60 courses on a wide variety of subjects, ranging from the humanities to sciences and so much more! We also recently teamed up with Arizona State University to bring you more courses on the Study Hall channel.Links:Support us on Patreon!: http://patreon.com/crashcourseInstagram:

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All Episodes

16:23

The Columbian Exchange: Crash Course World History #23

CrashCourse ·

2026/09/11

In which John Green teaches you about the changes wrought by contact between the Old World and the New. John does this by exploring the totally awesome history book "The Columbian Exchange" by Alfred Crosby, Jr. After Columbus "discovered" the Americas, European conquerors, traders, and settlers brought all manner of changes to the formerly isolated continents. Disease and invasive plant and animal species remade the New World, usually in negative ways. While native people, plants, and animals were

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16:19

Introduction to Latin American Literature: Crash...

CrashCourse ·

2026/09/11

Latin America is a vastly diverse region shaped by a blend of influences. In this episode of Crash Course Latin American Literature, we’ll explore how Latin American authors navigate one big question: Who are we? Introduction: Where is Latin America? 00:00The History of "Latin America" 0:53Latino vs. Hispanic 2:41Varying Identities & Languages 3:28Paz & Identity 5:05"Terra Nostra" 7:30Borges & Andrade 9:17Review & Credits 11:09Sources:

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15:45

Simple Animals: Sponges, Jellies, and Octopuses -...

CrashCourse ·

2026/09/11

Hank introduces us to the "simplest" of the animals, complexity-wise: beginning with sponges (whose very inclusion in the list as "animals" has been called into question because they are so simple) and finishing with the most complex molluscs, octopuses and squid. We differentiate them by the number of tissue layers they have, and by the complexity of those layers.Table of Contents:1) Porifera 1:332) Cnidaria 2:36a) Diploblasts 2:483) Platyhelminthes 3:33a) Triploblasts 3:56b) Coelom 4:364)

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13:21

Native Languages and The Indian Education Act: Ep 21...

CrashCourse ·

2026/09/10

It’s time to save Native languages—before it’s too late. In this episode of Crash Course Native American History, we dig into the ways Native languages were destroyed and the resilient ways tribes are bringing them back to life.Introduction: "Never Alone" 00:00The State of Native Language 0:35Revealing Native Culture 1:40Colonization & Boarding Schools 3:42Language Revitalization 7:00Review & Credits

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17:30

Charles V and the Holy Roman Empire: Crash Course...

CrashCourse ·

2026/09/10

In which John Green teaches you about the Holy Roman Empire by teaching you about Charles V. Charles Hapsburg was the Holy Roman Emperor, but he was also the King of Spain. And the King of Germany. And the King of Italy and the Lord of the Netherlands and Count Palatine of Burgundy. In short, Charles was runnin' thangs in much of the world during his reign. Charles ruled a lot of countries, and he was also known for encouraging intellectual discourse and even spoke out against slavery, in a limited

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15:47

The Renaissance: Was it a Thing? - Crash Course World...

CrashCourse ·

2026/09/10

In which John Green teaches you about the European Renaissance. European learning changed the world in the 15th and 16th centuries, but was it a cultural revolution, or an evolution? We'd argue that any cultural shift that occurs over a couple of hundred years isn't too overwhelming to the people who live through it. In retrospect though, the cultural bloom in Europe during this time was pretty impressive. In addition to investigating what caused the Renaissance and who benefitted from the changes

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16:08

Magical Realism and The Latin American Boom: Crash...

CrashCourse ·

2026/09/10

How did “Latin American literature” come to be? In this episode of Crash Course Latin American Literature, we trace the origins of this region’s stories from the pre-Columbian era all the way to the Boom of the 1960s.Introduction: Stories as History 00:00Pre-Columbian Literature 0:23Poetry & Bello 2:34Bolívar 4:37The Latin American Boom 6:08Gabriel García Márquez 8:04Review & Credits 10:57Sources: https://docs.google.com/document/d/1eE7g4-k6PD7C6wNBzeJIO8GCDHpoJl8ldDjKyq_2yYg/edit?tab=t.0To learn

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12:05

Comparative Anatomy: What Makes Us Animals - Crash...

CrashCourse ·

2026/09/10

Hank introduces us to comparative anatomy, which studies the similarities and differences in animal anatomy to support the theory of evolution and the shared ancestry of living things.References:Campbell Biology, 9th ed.CliffsAP Biology, 3rd ed.Thomas Henry Huxley: http://www.strangescience.net/huxley.htmTissues: http://web.jjay.cuny.edu/~acarpi/NSC/14-anatomy.htmDivergence time estimates for the early history of animal phyla...http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1689654/Table of Contents:1)

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13:33

The Land Back Movement Explained: Ep 22 of Crash...

CrashCourse ·

2026/09/10

The Land Back movement is exactly what it sounds like: Native Americans want their land … back. But it’s also a whole lot more than that. In this episode of Crash Course Native American History, we explore what the Land Back movement does, how it works, and what it means for our shared future on this planet.Introduction: 1492 Land Back Lane 00:00Land Back & Land Acknowledgements 0:40Settler Rent 2:00The Jemez Pueblo Tribe 3:17Environmental Impact 4:14Haudenosaunee Activism 7:04Review & Credits

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13:52

Columbus, Vasco da Gama, and Zheng He - 15th Century...

CrashCourse ·

2026/09/10

In which John Green teaches you about the beginning of the so-called Age of Discovery. You've probably heard of Christopher Columbus, who "discovered" America in 1492, but what about Vasco da Gama? How about Zheng He? Columbus gets a bad rap from many modern historians, but it turns out he was pretty important as far as the history of the world goes. That said, he wasn't the only pioneer plying the seas in the 1400s. In Portugal, Vasco da Gama was busy integrating Europe into the Indian Ocean Trade

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18:23

Diazonium Salts and Nucleophilic Aromatic...

CrashCourse ·

2026/09/10

Have you ever wondered where cured meats like salami or pepperoni get their bright red color? Of course its from organic chemistry! A chemical called nitric acid gives them that bright color, while also increasing their shelf. It's also involved in some other interesting reactions. In this episode of Crash Course Organic Chemistry we'll see how nitrous acid reacts with primary amines to form diazonium salts, we'll learn about alkyldiazonium salts and aryldiazonium salts, and see what conditions are

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12:40

Nature in Latin American Literature: Crash Course...

CrashCourse ·

2026/09/10

Who is Mother Nature REALLY? In this episode of Crash Course Latin American Literature, we’ll uncover how representations of Latin American landscapes have often reflected shifting social and political concerns.Introduction: Mama Nature 00:00The Latin American Landscape 0:43The Landscape of Independence 2:11"La Vorágine" 3:38Eco-horror 5:18Ecopoetry 7:22Review & Credits 8:37Sources: https://docs.google.com/document/d/1eE7g4-k6PD7C6wNBzeJIO8GCDHpoJl8ldDjKyq_2yYg/edit?tab=t.0To learn more, check out

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15:58

Evolution: It's a Thing - Crash Course Biology #20

CrashCourse ·

2026/09/10

Hank gets real with us in a discussion of evolution - it's a thing, not a debate. Gene distribution changes over time, across successive generations, to give rise to diversity at every level of biological organization.Table of Contents1) The Theory of Evolution 1:492) Fossils 2:423) Homologous Structures 4:364) Biogeography 7:025) Direct Observation

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4:25

Crash Course Preview: What Are the Possible Futures...

CrashCourse ·

2026/09/10

Welcome to Crash Course: Futures of AI! Our host Kousha Navidar is here to guide you through the ins and outs of our potential AI futures. AI is changing FAST so rather than doing a full Crash Course series of 12+ episodes, we’ve prepared a mini-series of just the basics. Crash Course will never tell you what to think and we’re not the type of organization that responds to breaking news in real time. Instead, we’re here to offer a zoomed-out foundation upon which to base your own opinions as you

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14:01

Russia, the Kievan Rus, and the Mongols: Crash Course...

CrashCourse ·

2026/09/10

If you're interested in learning more about the Russian government's 2022 invasion of Ukraine, check out this vlogbrothers video published on 3/15/2022: https://www.youtube.com/watch?v=mMZYKxgc9TEIn which John Green teaches you how Russia evolved from a loose amalgamation of medieval principalities known as the Kievan Rus into the thriving democracy we know today. As you can imagine, there were a few bumps along the road. It turns out that our old friends the Mongols had quite a lot to do with

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17:03

The History of AI Explained: Crash Course Futures of...

CrashCourse ·

2026/09/10

In 1965, Moore’s Law predicted how computers would become smaller, faster, and more powerful than ever before. But here in 2025, we’re on the brink of an even bigger revolution. In this episode, we explore where AI's been, what it can do, and where it might be going. AI benchmarks and scaling laws help us understand what AI is, and could be, capable of. Introduction 00:00How did AI get here? 2:21How do we measure AI progress? 7:47How can we predict the future of AI? 9:10Conclusion 11:29About This

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16:30

Taxonomy: Life's Filing System - Crash Course Biology...

CrashCourse ·

2026/09/10

Hank tells us the background story and explains the importance of the science of classifying living things, also known as

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18:12

The Modern Revolution: Crash Course Big History #8

CrashCourse ·

2026/09/10

In which Hank and John Green teach you a Crash Course on the modern revolution, and the upside of the progress that humanity has made in the last 500 years or so. And while there are two sides to every history, and many of these changes haven't been great for the other inhabitants of the Earth, collective learning has made life better for people in general. We'll talk about the European explorations, improvements in machinery, communications, and the harnessing of energy that improved the lot of

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16:26

Dictators and Resistance: Crash Course Latin American...

CrashCourse ·

2026/09/10

Strongmen, tyrants, and dictators have marked Latin America’s history — and literature — for hundreds of years. In this episode of Crash Course Latin American Literature, we dive into some of the novels that have challenged authoritarian governments in real time and in their aftermath. Introduction: The Power of Stories 00:00Novelas de la Tierra 0:34"Facundo" 2:16Novelas del Dictador 4:58“El Señor Presidente” 6:12"In the Time of Butterflies" 8:09Review & Credits 10:50Sources:

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13:26

Venice and the Ottoman Empire: Crash Course World...

CrashCourse ·

2026/09/10

In which John Green discusses the strange and mutually beneficial relationship between a republic, the city-state of Venice, and an Empire, the Ottomans--and how studying history can help you to be a better boyfriend/girlfriend. Together, the Ottoman Empire and Venice grew wealthy by facilitating trade: The Venetians had ships and nautical expertise; the Ottomans had access to many of the most valuable goods in the world, especially pepper and grain. Working together across cultural and religious

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701 results

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