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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

13:45

Mansa Musa and Islam in Africa: Crash Course World...

CrashCourse ·

2026/09/09

In which John Green teaches you about Sub-Saharan Africa! So, what exactly was going on there? It turns out, it was a lot of trade, converting to Islam, visits from Ibn Battuta, trade, beautiful women, trade, some impressive architecture, and several empires. John not only covers the West African Malian Empire, which is the one Mansa Musa ruled, but he also discusses the Ghanian Empire and even gets over to East Africa as well to discuss the trade-based city-states of Mogadishu, Mombasa, and

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15:59

Emmett Till: Crash Course Black American History #34

CrashCourse ·

2026/09/09

In 1955, a 14-year-old boy named Emmett Till was brutally murdered in Money, Mississippi. The white men who murdered him killed him for being Black. Emmett Till's mother chose to have an open casket funeral, and show the world what had been done to her son. Despite the killers being acquitted in court, the story of Emmett Till and the jarring images of his funeral shocked the nation and were a vital catalyst in turning the civil rights movement into a nationwide phenomenon.Clint's book, How the Word

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16:47

How Should AI Be Governed?: Crash Course Futures of...

CrashCourse ·

2026/09/09

The future of AI is maybe beautiful, maybe scary, and definitely uncertain. But we do have a say in how it rolls out. From lab policies to international treaties, people all over the world are trying to figure out how to build and use AI in safe, responsible ways. But when the stakes are so high, can humanity really come together and keep AI under control? Chapter 1: Sam Altman & OpenAI 00:00Chapter 2: Lab-level AI governance 1:13Chapter 3: National AI Governance 5:07Chapter 4: International AI

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6:31

Crash Course World History Outtakes

CrashCourse ·

2026/09/09

In which John is a dirty, dirty boy. Hilarious. Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourseWant to find Crash Course elsewhere on the internet?Facebook - http://www.facebook.com/YouTubeCrashCourseTwitter - http://www.twitter.com/TheCrashCourseInstagram - https://www.instagram.com/thecrashcourse/ Learn more about your ad choices. Visit megaphone.fm/adchoices

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13:21

Borders and Identity: Crash Course Latin American...

CrashCourse ·

2026/09/09

Where you are affects WHO you are. But what happens when you cross a border? In this episode of Crash Course Latin American Literature, we’ll explore how exile and border crossings have inspired Latin American authors to cross literary borders, too.Introduction: Borders 00:00Julio Cortázar 0:41Chicanas & Gloria Anzaldúa 4:03Yuri Herrera 6:54Review & Credits 9:07Sources: https://docs.google.com/document/d/1eE7g4-k6PD7C6wNBzeJIO8GCDHpoJl8ldDjKyq_2yYg/edit?tab=t.0To learn more, check out these

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13:39

Speciation: Of Ligers and Men - Crash Course Biology #15

CrashCourse ·

2026/09/09

Hank explains speciation - the evolutionary process by which new biological species arise - in terms of finches, ligers, mules, and dogs.Table of Contents1) Species 0:302) Hybrids 1:523) Reproductive Isolation 2:48a) Post-Zygotic 3:31b) Pre-Zygotic 3:514) Allopatric Speciation 4:235) Sympatric Speciation 6:036) Biolography 6:327) Dogs 8:37This video contains the following sounds from Freesound.org:"bird tweet.aif" by tigersound"ForestBirds.wav" by HerbertBoland"morning_in_the_forest_2007_04_15.wav"

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12:46

The Hidden Politics of Home: Crash Course Latin...

CrashCourse ·

2026/09/09

Houses and homes occupy a lot of space in Latin American literature. In this episode of Crash Course Latin American Literature, we make room for all the ways that our homes can represent who we are. Introduction: Home 00:00"The House on Mango Street" 0:23"La Casa de los Espíritus" 3:06"Las Malas" 6:42Review & Credits 8:26Sources: https://docs.google.com/document/d/1eE7g4-k6PD7C6wNBzeJIO8GCDHpoJl8ldDjKyq_2yYg/edit?tab=t.0To learn more, check out these

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15:47

The Crusades - Pilgrimage or Holy War?: Crash Course...

CrashCourse ·

2026/09/09

In which John Green teaches you about the Crusades embarked upon by European Christians in the 12th and 13th centuries. Our traditional perception of the Crusades as European Colonization thinly veiled in religion isn't quite right. John covers the First through the Fourth Crusades, telling you which were successful, which were well-intentioned yet ultimately destructive, and which were just plain crazy. Before you ask, no, he doesn't cover the Children's Crusade, in which children were provoked to

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20:21

Luther and the Protestant Reformation: Crash Course...

CrashCourse ·

2026/09/09

In which John Green teaches you about the Protestant Reformation. Prior to the Protestant Reformation, pretty much everyone in Europe was a Roman Catholic. Not to get all "great man," but Martin Luther changed all that. Martin Luther didn't like the corruption he saw in the church, especially the sale of indulgences, so he left the church and started his own. And it caught on! And it really did kind of change the world. The changes increased literacy and education, and some even say the Protestant

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4:39

Crash Course Scientific Thinking Preview

CrashCourse ·

2026/09/09

Science is one of the best ways we have of understanding what’s going on around us. In Crash Course Scientific Thinking we’ll explore the foundational principles that underlie scientific thought. Course DescriptionIn 7 episodes, Crash Course Scientific Thinking will teach learners the foundational principles underlying scientific thought, pulling back the curtain on processes like peer review, interrogating what makes sources reliable (or not), unpacking how consensus is reached, and revealing how

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16:58

Natural Selection - Crash Course Biology #14

CrashCourse ·

2026/09/09

Hank guides us through the process of natural selection, the key mechanism of evolution.Table of Contents:1) Natural Selection 1:272) Adaptation 2:563) Fitness 3:364) Four Principals 3:54a. Variations 4:01b. Heritability 4:17c. "The Struggle for Existence" 4:25d. Survival and Reproductive Rates 5:005) Biolography 5:596) Modes of Selection 7:40a. Directional Selection 8:17b. Stabilizing Selection 8:56c. Disruptive Selection 9:277) Sexual Selection 10:228) Artificial Selection 11:24References:

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15:20

Family, Power, and Legacy: Crash Course Latin...

CrashCourse ·

2026/09/09

Families are personal—but they can also be political. In this episode of Crash Course Latin American Literature, we’ll take a look at a 19th-century romance novel and poems about motherhood. But we’ll also compare two contemporary novels about growing up—and relating to the people who raised you.Introduction: Mi Pueblito 00:00Romance Novels 0:34"Iracema" 1:14Gabriela Mistral 3:18"I Am Not Your Perfect Mexican Daughter" 5:29"We the Animals" 7:57Review & Credits 10:15Sources:

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16:22

The Dark Ages...How Dark Were They, Really?: Crash...

CrashCourse ·

2026/09/09

John Green teaches you about the so-called Dark Ages, which it turns out weren't as uniformly dark as you may have been led to believe. While Europe was indeed having some issues, many other parts of the world were thriving and relatively enlightened. John covers European Feudalism, the cultural blossoming of the Islamic world, and the scientific and artistic advances in China, all during these "Dark Ages." Along the way, John will raise questions about the validity of Europe's status as a

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16:04

Introduction to Cognitive Bias: Crash Course...

CrashCourse ·

2026/09/09

Ever fallen for fake news on social media because it felt real? Or found yourself afraid to go in the ocean after watching too many videos about sharks? In this episode of Crash Course Scientific Thinking, we explore how cognitive bias shapes the way we think about the world, and how scientific thinking can help us overcome it. Introduction: Earth as the Center 00:00Recognizing Patterns 0:44Common Cognitive Biases 2:44Overcoming Bias Through Science 6:02How to Combat Cognitive Bias 8:53Review &

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16:06

How Are Cities Organized? Crash Course Geography #46

CrashCourse ·

2026/09/09

Today we’re going to take a closer look at cities, examine how these large complex structures are organized, and identify patterns and differences in land use around the world. We'll begin with a quick recap of Central Place Theory, then we'll show you how the Concentric Zone Model can approximate the development of Chicago in the United States. Then, we'll take a closer look at colonial port cities, the development of industrial zones and financial districts, and the patchwork of immigrant

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15:57

Meiosis: Where the Sex Starts - Crash Course Biology #13

CrashCourse ·

2026/09/09

Hank gets down to the nitty-gritty about meiosis, the special type of cell division that is necessary for sexual reproduction in eukaryotic organisms.References:http://faculty.clintoncc.suny.edu/faculty/michael.gregory/files/Bio%20101/Bio%20101%20Lectures/Meiosis/meiosis.htmhttps://www.genome.gov/Glossary/index.cfm?p=viewimage&id=33http://www.sumanasinc.com/webcontent/animations/content/meiosis.htmlhttp://sun.menloschool.org/~dspence/biology/mit_meiosis/chapt11_15.htmlTable of Contents1) Homologous

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15:17

Statistical Thinking in Science: Crash Course...

CrashCourse ·

2026/09/09

We’re all gonna die someday. But can statistics help us know when? In this episode of Crash Course Scientific Thinking, we’ll learn how to interpret the statistics we see in our daily lives. And we’ll explore why we need stats to make informed judgments, be more precise about what we don’t know, and get closer to what we can know. Introduction: When Will I Die? 00:00Basic Statistics 0:44Confidence Intervals 4:14Relative & Absolute Risk 5:32Correlation vs. Causation 7:22Review & Credits 9:45Sources:

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17:07

Islam, the Quran, and the Five Pillars: Crash Course...

CrashCourse ·

2026/09/09

In which John Green teaches you the history of Islam, including the revelation of the Qu'ran to Muhammad, the five pillars of Islam, how the Islamic empire got its start, the Rightly Guided Caliphs, and more. Learn about hadiths, Abu Bakr, and whether the Umma has anything to do with Uma Thurman (spoiler alert: it doesn't). Also, learn a little about the split between Sunni and Shia Muslims, and how to tell if this year's Ramadan is going to be difficult for your Muslim friends. Let's try to keep

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13:05

Animals and Shapeshifters: Crash Course Latin...

CrashCourse ·

2026/09/09

Fish and insects and dogs—oh my! In this episode of Crash Course Latin American Literature, we’ll explore how all things fuzzy, buzzy, and ferocious can help us understand our own human nature. Introduction: Latin American Animals 00:00António Vieira 0:46Alejo Carpentier 3:34Pilar Quintana 6:27Review & Credits 8:54Sources: https://docs.google.com/document/d/1eE7g4-k6PD7C6wNBzeJIO8GCDHpoJl8ldDjKyq_2yYg/edit?tab=t.0To learn more, check out these videos:https://www.youtube.com/watch?v=oyv-eJRRozs

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14:02

Mitosis: Splitting Up is Complicated - Crash Course...

CrashCourse ·

2026/09/09

Hank describes mitosis and cytokinesis - the series of processes our cells go through to divide into two identical

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706 results

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