Crash Course
Network Solids and Carbon: Crash Course Chemistry
In this episode, Hank talks about Network solids and Carbon and how you can actually create a Diamond from plain old Carbon... well, YOU probably can't unless you own a bunch of elephants. It's a long story. BUT, within you will learn...
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Magnetism: Crash Course Physics
You’re probably familiar with the basics of magnets already: They have a north pole and a south pole. Two of the same pole will repel each other, while opposites attract. Only certain materials, especially those that contain iron, can be...
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Population, Sustainability, and Malthus: Crash Course World History 215
In which John Green teaches you about population. So, how many people can reasonably live on the Earth? Thomas Malthus got it totally wrong in the 19th century, but for some reason, he keeps coming up when we talk about population. In...
Crash Course
Web Search
Today we’re going to talk about search engines, which are just AI systems that try to help us find what we’re looking for. Search engines can be the sort that serve up a list of results, like during a Google or Bing search, using web...
Crash Course
Intro to Algorithms: Crash Course Computer Science
Algorithms are the sets of steps necessary to complete computation - they are at the heart of what our devices actually do. And this isn’t a new concept. Since the development of math itself algorithms have been needed to help us...
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Plato and Aristotle: Crash Course History of Science
Plato and Aristotle: Crash Course History of Science #3
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How Does the Earth Create Different Landforms? Crash Course Geography
Cliffs and canyons, beaches and dunes, floodplains and river valleys, plateaus and mountains — these are all products of a restless Earth. In today’s episode we’re going to take a closer look at how landforms greatly influence how people...
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How Can Rain Create Conflict? Precipitation and Water Use: Crash Course Geography
If you compare precipitation around the world with population distribution we can understand a simple but powerful pattern of human geography: where there is water, there are people. But it gets a little more complicated because where...
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Groundwater & the Israeli-Palestinian Conflict: Crash Course Geography
The Arab-Israeli Conflict, which is the ongoing political tensions and military conflicts between Arab nations and Israel, is one of the longest and most complex disputes in the world. Today, we're going to focus on more recent events,...
Crash Course
The Ideal Gas Law: Crash Course Chemistry
Gases are everywhere, and this is good news and bad news for chemists. The good news: when they are behaving themselves, it's extremely easy to describe their behavior theoretically, experimentally and mathematically. The bad news is...
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Hydrocarbon Power! - Crash Course Chemistry
In which Hank introduces us to the world of Organic Chemistry and, more specifically, the power of hydrocarbon. He talks about the classifications of organic compounds, the structures & properties of alkanes, isomers, and naming an...
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Who Even Is An Entrepreneur? Crash Course Business - Entrepreneurship
You've probably heard the word "Entrepreneur" thrown around a lot in business. It conjures images of Elon Musk, Bill Gates, or Oprah Winfrey. But, it goes way beyond that. In this episode of Crash Course Business: Entrepreneurship, Anna...
Crash Course
Language, Voice, and Holden Caulfield: The Catcher in the Rye Part 1
In which John Green examines JD Salinger's novel The Catcher in the Rye. John pulls out the old school literary criticism by examining the text itself rather than paying attention to the biographical or historical context of the novel...
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What Are the Different Types of Cyclones? Crash Course Geography
Today we’re going to talk about two types of cyclones: mid-latitude cyclones and tropical cyclones. Mid-latitude cyclones are huge weather systems that bring day-to-day weather in the mid-latitudes. They're the reason the weather is...
Crash Course
Immune System, part 2: Crash Course A&P
In the penultimate episode of Crash Course Anatomy & Physiology, Hank explains your adaptive immune system. The adaptive immune system's humoral response guards extracellular terrain against pathogens. Hank also explains B cells,...
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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
Nuclear Chemistry Part 2: Fusion and Fission - Crash Course Chemistry
Continuing our look at Nuclear Chemistry, Hank takes this episode to talk about Fusion and Fission. What they mean, how they work, their positives, negatives, and dangers. Plus, E=mc2, Mass Defect, and Applications of Fission and Fusion...
Crash Course
How Did Religion Spread Along the Silk Road? Crash Course Geography
Today we’re going to talk about the collection of routes known as the Silk Roads, and explore how worldview and other ideas spread along those trade routes. The Silk Roads are responsible for everything from the spices we use when we...
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Evolution: It's a Thing - Crash Course Biology
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.
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How to Find Your Leadership Style: Crash Course Business - Soft Skills
How to Find Your Leadership Style Crash Course Business - Soft Skills #14
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Tricksters: An Introduction: Crash Course World Mythology 20
This week, Mike introduces you to Tricksters, starting with Anansi, the West African trickster god who is also sometimes a spider. Tricksters are, well, tricky. They're wise and foolish, they're promiscuous and amoral, but in a lot of...
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What Are Ecosystems? Crash Course Geography
Today we're going to take a closer look at ecosystems -- which are communities of living organisms in an area interacting with their environment -- and how this relationship between the amount of energy a place receives and the movement...
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Where and Why Do People Move? Crash Course Geography
People have been migrating and transplanting since before recorded history, and understanding the reasons why people migrate can help explain some of the cultural, economic, and political patterns we see around the world. Today, we’re...
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The Industrial Revolution: Crash Course European History
We've talked about a lot of revolutions in 19th Century Europe, and today we're moving on to a less warlike revolution, the Industrial Revolution. You'll learn about the development of steam power and mechanization, and the labor and...