Crash Course Kids
Big Changes in the Big Forest
What do beavers, termites, and prairie dogs have in common? They all change their environments! Last time we talked about how humans change their environments, but humans are animals and all animals change their environments just by...
Crash Course
Training Neural Networks
Today we’re going to talk about how neurons in a neural network learn by getting their math adjusted, called backpropagation, and how we can optimize networks by finding the best combinations of weights to minimize error. Then we’ll send...
Crash Course
The Future of Gaming: Crash Course Games
Welcome to the FINAL LEVEL of Crash Course Games! We thought it made the most sense to sign off this series by taking a look towards the future because you know... boss battles are supposed to be tough. Now we don't know the future...
Crash Course
Operating Systems: Crash Course Computer Science
So as you may have noticed from last episode, computers keep getting faster and faster, and by the start of the 1950s they had gotten so fast that it often took longer to manually load programs via punch cards than to actually run them!...
Crash Course
The Soviet Bloc Unwinds: Crash Course European History
In the late 1970s and throughout the 1980s, protests and unrest continued continued across Europe, and the Soviet Union was having increasing trouble holding its sphere of influence together. Today you'll learn about the labor strikes of...
Crash Course
Int'l Commerce, Snorkeling Camels, and The Indian Ocean Trade: Crash Course World History
In which John Green teaches you the history of the Indian Ocean Trade. John weaves a tale of swashbuckling adventure, replete with trade in books, ivory, and timber. Along the way, John manages to cover advances in seafaring technology,...
Crash Course
Liberals, Conservatives, and Pride and Prejudice, Part 2: Crash Course Literature 412
This is it! The final episode of CC Literature season 4 is a deeper look at Jane Austen's Pride and Prejudice. Today we'll explore the novel's take on materialism, and we'll talk about whether the novel has a liberal or conservative...
Crash Course
Galahad, Perceval, and the Holy Grail: Crash Course World Mythology
In which Mike Rugnetta quests for knowledge of the Holy Grail of Mythology. Which is the actual, literal Holy Grail! The cup of Christ! Legends about the Holy Grail are often connected to the British legends of King Arthur, and this...
Crash Course
The Deep Future Crash Course Big History 10
Finally, after what seems like eons and eons, the end is nigh. We're talking not only about the end of Crash Course Big History, but also the end of everything. The end of humanity and the end of the universe.John and Hank Green will...
SciShow
SciShow Quiz Show: When Science Meets Pop Culture
Nick Jenkins of Crash Course faces off against Hank Green of SciShow in this collision of science and nerdy pop-culture references.
Crash Course
Elizabeth Key Crash Course Black American History
The legal system can seem like a complicated tangle of arcane rules and loopholes, and it can sometimes seem like it is designed to confuse. But it is possible, with the right application, for the legal system to rectify injustices....
Crash Course
Plessy v Ferguson and Segregation Crash Course Black American History
The United States' Constitution is not a very detailed document. It lays out the basic structure of government, and the details are filled in with legislation, and clarified and reinforced by court decisions. One of the most...
Crash Course
Energy & Chemistry: Crash Course Chemistry
Grumpy Professor Hank admits to being wrong about how everything is chemicals. But he now wants you to listen as he blows your mind with a new sweeping statement: everything (yes, really everything this time) is energy. What?! This week,...
Crash Course
Crash Course Film Criticism Preview
It's a new series in Crash Course Film as Michael Aranda takes the reins as host for the next 15 weeks to talk about Film Criticism.
Crash Course
Mechanical Engineering: Crash Course Engineering #3
Today we continue our tour through the major fields of engineering with a look at mechanical engineering, beginning with the steam engine. We’ll discuss aircraft, the development of aerospace engineering, and take a look into the future...
Crash Course
Congressional Decisions: Crash Course Government and Politics
This week Craig breaks out the crystal ball to try and figure out why our congresspeople do the things that they do. We’ll talk about the three motivating factors of congressional decisions - constituency, interest groups, and political...
Crash Course
Migration: Crash Course European History
Between 1840 and 1914, an estimated 40 million people left Europe. This is one of the most significant migrations in human history. So, who was leaving Europe? And why? Crash Course is on Patreon! You can support us directly by signing...
Crash Course
Three Colors - Blue: Crash Course Film Criticism
Movies are really good at making us feel. Happy, sad, excited, etc... Part of that is because they use so many different types of media all at once. Photography, music, performance, and editing all play into their ability to communicate...
Crash Course
Herakles. Or Hercules. A Problematic Hero: Crash Course World Mythology
This week, Mike Rugnetta re-introduces Herakles, the strong man of Greek and Roman myth. Strongman with a darkside, that is. You'll learn about Herakles' 10 actually 12 labors, the story of his birth, his death, some of his marriages,...
Crash Course
The Mwindo Epic: Crash Course World Mythology
In which Mike Rugnetta teaches you about the hero of The Congo, Mwindo! Mike will tell you the stories of Mwindo's birth, his many deaths, and his evolution from a braggy superhuman baby to a wise, superhuman leader of his people. Along...
Crash Course
Social Media: Crash Course Navigating Digital Information #10
Today, in our series finale, we're going to talk about the great white whale of navigating online information: your social media feed. Social media shapes both our online and offline behaviors from how we engage in communities and...
Crash Course
Biomedical Treatments: Crash Course Psychology
Do you know how Prozac works? Or lithium? Did you know that electro shock therapy is still a thing? There's a lot to know about biomedical treatments and how they work in tandem with psychotherapy or talk therapy. In this episode of...
Crash Course
Parasympathetic Nervous System: Crash Course A&P
This week we are looking at your parasympathetic division, which is the "resting and digesting" unit. Unfortunately, learning about this de-stressing division also involves a whole lot of memorization. Don't worry, though - we've got...
Crash Course
War & Human Nature: Crash Course World History 204
In which John Green teaches you about war! Specifically, John talks about whether humanity is naturally warlike, hard-wired to kill, or if perhaps war is a cultural construct. John will talk about the Hobbes versus Rousseau debate, the...