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.
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11:1655K views · 1d ago · 11:16
Are we in a new geological epoch? Some geologists think so–one marked by human impact on Earth. Others say we’re not there yet. Either way, what is clear is that humans have had a big impact on Earth—sometimes in irreversible ways. In this episode, we’ll learn about the Anthropocene and how humans can reverse or adapt to the changes we’ve caused on Earth.
54:4268K views · 2d ago · 54:42
The Crash Course team has taken on some divisive topics lately with our Sex Ed, Religion, and Big Questions on US Government series. Our editorial and production team shares how we've tackled videos about sensitive subjects and succeeded against a divisive algorithm.
7:48:19229K views · 3d ago · 7:48:19
In Crash Course Marathons, we’re revisiting the series you love, in long-form videos that cover entire subjects from back to front. Crash Course World History covers the major beats of humanity’s past, from the agricultural revolution to the Cold War. We’ll follow kings, traders, samurai, pirates, and the occasional camel through war, exploration, colonialism, and revolution. And of course, the Mongols.
33:2983K views · 8d ago · 33:29
Is it possible to find cosmic dust on Earth? That’s the question jazz-musician-turned-citizen-scientist Jon Larsen set out to answer. Over the course of a decade and in defiance of the experts, Jon collected dust from around the world using a magnet in search of micrometeorites. Would his efforts be successful, or would his search be in vain? And how do these tiny wonders clue us into the mystery of how life exists on Earth?
14:3091K views · 10d ago · 14:30
What’s the deal with Gerrymandering? In this episode of Crash Course Big Questions on U.S. Government, we’ll look at which kinds of gerrymandering are legal and which aren’t. We’ll also learn why it’s getting harder to draw district lines without giving one party an unfair advantage over another.
11:3579K views · 15d ago · 11:35
Geology can’t tell us the future, but it can tell us a whole lot about the past. And when it comes to climate change on Earth, there really is nothing new under the sun. In this episode, we’ll talk about one of Earth’s hottest periods – the Paleo-Eocene Thermal Maximum – and what it can tell us about our hot, hot future.
13:3589K views · 17d ago · 13:35
Was the 2020 election stolen? Well, no. But a lot of people seemed to think it was. So, how hard is it, really, to commit election fraud? In this episode, we dig into how our voting system really works, and how we keep our elections secure.
10:2293K views · 22d ago · 10:22
Minerals—they’re in our homes and our smartphones. But can we meet the demand for them without hurting the places and communities they come from? In this episode of Crash Course Geology, we’ll learn about mining, the critical minerals that power our technologies, and efforts to meet our mineral needs more responsibly.
14:32140K views · 24d ago · 14:32
Is the Electoral College broken? More and more people in the U.S. are voicing dissatisfaction with the way we elect presidents. In this episode, we’ll unpack how the Electoral College works, why some people think it doesn’t work, and possible solutions to make our elections work better.
10:3196K views · 29d ago · 10:31
You’ve probably heard about fossil fuels before – the good, the bad, and the super, super ugly. But what you might not know is that fossil fuels only exist because of the power of the Earth. And that same power can also provide us with a different type of energy that might be key to a more sustainable future. In this episode, we’ll dig deep and talk about fossil fuels and geothermal energy.
Topics: What are fossil fuels and how do they form? · The problems with fossil fuels · Geothermal energy · Review and Credits
14:41158K views · 1mo ago · 14:41
Why don’t more people in the U.S. vote? In 2024, 90 million U.S. voters made a choice on election day...the choice not to vote. The U.S. has some of the lowest voter turnout of any developed democracy. To find the answer, we have to take a hard look at ourselves, but also at the systems that make us want to vote, or stay home.
14:31126K views · 1mo ago · 14:31
Where do campaigns get all their money, and where does it go? In this episode of Crash Course Big Questions on U.S. Government, we’ll dig into the limits of campaign financing and the rising influence of super PACs, dark money, and independent spending. We’ll also look at why special interest groups, corporations, and individual voters donate to campaigns, and what that money is actually used for.
10:33105K views · 1mo ago · 10:33
How worried should we be about giant asteroid impacts? In this episode of Crash Course Geology, we’ll learn how to tell an asteroid from a meteorite, what happens when space rocks approach the Earth, and how scientists track potential threats before they reach us.
13:14160K views · 1mo ago · 13:14
Does the U.S. need a competitive third party? And would anyone even vote for one? In this episode of Crash Course Big Questions on U.S. Government we’ll investigate why it feels like the U.S. is trapped in a two-party system. The answer comes down to two things – our systems and ourselves.
10:47103K views · 1mo ago · 10:47
What can gouge out lakes, carve through mountains, and make weird marks in the ground that look /exactly/ like yeti claws? Well, not a yeti, probably. In this episode, we’ll learn about glaciers, the huge frozen beasts that have shaped our world – and might soon be leaving it.
12:13161K views · 1mo ago · 12:13
How did U.S. politics get so divisive? In this episode of Crash Course Big Questions: U.S. Government and Politics, we’ll pull back the curtain on how Republican and Democrat became synonymous with “conservative” and “liberal,” and why politics today has gotten so polarized and personal.
8:21:26240K views · 1mo ago · 8:21:26
In Crash Course Marathons, we’re revisiting the series you love, in long-form videos that cover entire subjects from back to front. Crash Course Astronomy covers outer space, from the stars and nearby planets we can see with the naked eye, to the mysterious dark matter no one can see at all. With detours to exoplanets, deep time, and even our own planet Earth, we’ll explore the universe — what we know, how we know it, and what’s still left to discover.
3:30123K views · 1mo ago · 3:30
Welcome to Crash Course Big Questions on U.S Government! In this series, we’ll be exploring big questions and misconceptions about how our government operates, from partisan divisions and Congressional gridlock to stolen elections and the limits of presidential power.
10:20123K views · 2mo ago · 10:20
Everybody dies, but few fossilize. In this episode of Crash Course Geology, we’ll learn how fossils form and why they’re so rare. Although very few living things ever become fossils, those that /do/ help us understand Earth’s history and how life came to be as it is today.
11:16145K views · 2mo ago · 11:16
What do iron deposits, fossils, and radioactive meteorites have in common? They’re all keeping records of our geologic history, the unimaginably long period of time that our Earth has been swinging around the sun. In this episode, we’ll look back into geologic time, discovering what we know, how we know it, and what it all means.
2:0623K views · 2mo ago · 2:06
Dwayne ventured out of the Crash Course studio to learn more about stratigraphy with @eons host Kallie Moore! We can see different features in this formation in Southwest Montana that tell us that this rock was once marine. Learn more about how to read the rocky layers of Earth’s biography in Crash Course Geology episode 16 -- out now!
10:5747K views · 2mo ago · 10:57
How did over one billion years of history go missing? In this episode of Crash Course Geology, we’ll tour the Grand Canyon and discover how geologists read its rocky layers like chapters in Earth’s biography. We’ll also explore theories about why some of those chapters have disappeared.
12:1949K views · 3mo ago · 12:19
Earthquakes are an unfortunate part of life on a planet with tectonic plates. And while they can be dangerous, we can also be prepared for them. In this episode of Crash Course Geology, we dive deep into earthquake preparedness to help you know what to do when the Big One hits.
11:0746K views · 3mo ago · 11:07
Can we predict earthquakes before they happen? In this episode, we’ll learn the basics of how and why earthquakes occur, explore how seismic waves help us understand earthquake risks, and discover how we might prevent and protect ourselves from the most damaging shocks.
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