Crash Course
The Future of Virtual Reality: Crash Course Games
Today, we're going to take a look at a seemingly cutting-edge technology that has actually been around for decades - virtual reality. Virtual reality devices have been introduced multiple times in the video game era, but they never seem...
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Democracy, Authoritarian Capitalism, and China: Crash Course World History 230
In which John Green teaches you about the end of World History, and the end of the world as we know it, kind of. For the last hundred years or so, it seemed that one important ingredient for running an economically successful country was...
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When Predictions Succeed - Crash Course Statistics
In our series finale, we're going to take a look at some of the times we've used statistics to gaze into our crystal ball, and actually got it right! We'll talk about how stores know what we want to buy (which can sometimes be a good...
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Social Mobility: Crash Course Sociology
Today we’re exploring social mobility in some more depth. We’ll look at intergenerational and intragenerational mobility and the difference between absolute and relative mobility. We’ll go over the long run upward social mobility trends...
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The Power of Motivation: Crash Course Psychology
Feeling motivated? Even if you are, do you know why? The story of Aaron Ralston can tell us a lot about motivation. In this episode of Crash Course Psychology, Hank tells us Ralston's story, as well as 4 theories of motivation and some...
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Regression - Crash Course Statistics
Today we're going to introduce one of the most flexible statistical tools - the General Linear Model (or GLM). GLMs allow us to create many different models to help describe the world - you see them a lot in science, economics, and...
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Sampling Methods and Bias with Surveys - Crash Course Statistics
Today we’re going to talk about good and bad surveys. From user feedback surveys, telephone polls, and those questionnaires at your doctors office, surveys are everywhere, but with their ease to create and distribute, they're also...
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Intro to Electrophilic Aromatic Substitution: Crash Course Organic Chemistry
We’ve talked about benzene a bit already in this series, but did you know that benzene rings are present in all kinds of familiar substances? The styrofoam packaging that comes with new appliances, some pharmaceuticals, pesticides, and...
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Why We Can't Invent a Perfect Engine: Crash Course Engineering #10
We’ve introduced the 0th and 1st laws of thermodynamics, so now it’s time to move on to the second law and how we came to understand it. We’ll explain the differences between the first and second law, and we’ll talk about the Carnot...
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Utilitarianism: Crash Course Philosophy
Our next stop in our tour of the ethical lay of the land is utilitarianism. With a little help from Batman, Hank explains the principle of utility, and the difference between act and rule utilitarianism.
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Playing with Power P-Values Pt 3 - Crash Course Statistics
We're going to finish up our discussion of p-values by taking a closer look at how they can get it wrong, and what we can do to minimize those errors. We'll discuss Type 1 (when we think we've detected an effect, but there actually isn't...
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Sound: Crash Course Physics
We learn a lot about our surroundings thanks to sound. But... what is it exactly? Sound, that is. What is sound? And how does it travel? And what is this Doppler Effect that we've heard so much about? In this episode of Crash Course...
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History of Media Literacy, Part 2: Crash Course Media Literacy
Jay continues our journey through the history of media literacy with the arrival of movies, television, and the other screens that now permeate our lives – along with some of the different approaches to media literacy that these...
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YouTube Couldn't Exist Without Communications & Signal Processing: Crash Course Engineering #42
Engineering helped make this video possible. This week we’ll look at how it’s possible for you to watch this video with the fundamentals of signal processing. We’ll explore things from Morse Code, to problems like bandwidth capacity and...
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Theories About Family & Marriage: Crash Course Sociology
Today we’ll explore how sociology defines family and the different terms used to describe specific types of family. We’ll look at marriage in different societies, as well as marital residential patterns and patterns of descent. And, of...
Crash Course
Aromatics and Cyclic Compounds - Crash Course Chemistry
What's that smell? Smell's like Organic Chemistry! This week Hank talks about Aromatics and Cyclic Compounds and naming their substituents, resonance as well as common reactions & uses.
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Table of Contents
Cyclic Organic Compounds &...
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Population Health: Crash Course Sociology
We’re continuing our unit on health with a discussion of some of the indicators that help us measure health for different populations. We’ll also explore three contributors to health disparities: individual factors like genetics,...
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Buddha and Ashoka Crash Course World History
In which John relates a condensed history of India, post-Indus Valley Civilization. John explores Hinduism and the origins of Buddhism. He also gets into the reign of Ashoka, the Buddhist emperor who, in spite of Buddhism's structural...
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Reproductive System, part 3 - Sex & Fertilization: Crash Course A&P
After weeks of discussion of human reproduction, today we arrive at the main event: THE SEX. Hank explains the four phases of the human sexual response, how a sperm finds and fertilizes an egg, creating a zygote, and how different types...
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The Polymer Explosion Crash Course Engineering 20
We're continuing our look at engineering materials with third main type of material that you'll encounter as an engineer: polymers. They're made of long, repeating chains of smaller molecules known as monomers and today we'll explore...
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Politics: Crash Course Sociology
While politics is generally seen as the domain of a civics class (and Craig did a great job of teaching US Government & Politics elsewhere on this channel!) it’s something that sociology is interested in too. Today we’re looking at the...
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DNA, Hot Pockets, & The Longest Word Ever: Crash Course Biology
Hank imagines himself breaking into the Hot Pockets factory to steal their secret recipes and instruction manuals in order to help us understand how the processes known as DNA transcription and translation allow our cells to build proteins.
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Symbols, Values & Norms: Crash Course Sociology
What exactly is culture? This week we’re going to try to answer that, and explain the difference between material and non-material culture. We’ll look at three things that make up culture: symbols, values and beliefs, and norms. We’ll...
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Income and Wealth Inequality: Crash Course Economics
Inequality is a big, big subject. There's racial inequality, gender inequality, and lots and lots of other kinds of inequality. This is Econ, so we're going to talk about wealth inequality and income inequality. There's no question that...