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How to Identify Molecules - Proton NMR: Crash Course Organic Chemistry
If you were given a chemical and told to identify it, how would you go about doing that? You could look at different factors like color, boiling point, melting point, or smell, but the answer still might not be clear. Thankfully, today...
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The Biggest Problems We're Facing Today & The Future of Engineering: Crash Course Engineering #46
In our final episode of Crash Course Engineering we are going to take all the tools and ideas we’ve discussed throughout this series and try to imagine where we’re headed. We’re going to explore some of the biggest problems that today’s...
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Personality Disorders: Crash Course Psychology
What exactly are Personality Disorders? How can they be diagnosed? Can we prevent some of them? In this episode of Crash Course Psychology, Hank gives us the down low on things like Ego-Dystonic and Ego-Syntonic Disorders, Borderline and...
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Why It's So Hard To Make Better Batteries: Crash Course Engineering #32
There are batteries powering so many parts of our everyday lives, so today we’re going to talk about how they work and how we can make them better. We’ll explain how they provide power by discharging ions between a cathode and an anode,...
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How to Communicate with Customers: Crash Course Entrepreneurship
No business, no matter how innovative and amazing it is, will survive if people haven’t heard of it. If people don’t know something exists, they’ll never be able to purchase it. It’s time to work on our communication skills.
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Sound Production: Crash Course Film Production
Good sound is easy to miss because, usually, you're not paying attention to it. You're just simply, "in the story." But, sound recordists and engineers need to have a lot of technical know how as well as an instinct for story to help...
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The Industrial Economy Crash Course US History
In which John Green teaches you about the Industrial Economy that arose in the United States after the Civil War. You know how when you're studying history, and you're reading along and everything seems safely in the past, and then BOOM...
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Drought and Famine: Crash Course World History
In which John Green teaches you a little bit about drought, which is a natural weather phenomenon, and famine, which is almost always the result of human activity. Throughout human history, when food shortages strike humanity, there was...
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Fire and Buffalo Goddesses: Crash Course World Mythology
This week, we're continuing our talk about the characteristics of Goddesses, and we're going to look in depth at two stories from parts of the world we haven't visited much in this series so far. From Hawaii, we're going to hear a story...
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The Parable of the Sower: Crash Course Literature 406
This week, John is teaching you about the near-future dystopia in Octavia Butler's Parable of the Sower. Parable of the Sower tells the story of Lauren Oya Olamina, and her life growing up in a post-climate change, semi-lawless America....
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Compatibilism: Crash Course Philosophy
As we continue explore free will, today Hank considers a middle ground between hard determinism and libertarian free will: compatibilism. This view seeks to find ways that our internally motivated actions can be understood as free in a...
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The First Movie Camera: Crash Course Film History
After serial photography became a thing, it wasn't long before motion pictures started to develop. And, at the front of that development was Thomas Edison, who you may know as an inventor and business person. In this episode of Crash...
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The Eagle Huntress: Crash Course Film Criticism
During our Film History and Production series, we talked about how Film is an "Illusion of Reality." That filmmakers use shots, cuts, and narrative structure to trick us into believing what we're seeing. But, what happens when that...
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E1 and E2 Reactions - Crash Course Organic Chemistry
We’ve spent the last few episodes talking about substitution reactions, but now it’s time to talk about a related type of reaction: elimination reactions! Elimination reactions are super important because they are the main way we can...
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Why the Evolutionary Epic Matters: Crash Course Big History
Today we're talking about evolution_basically the history of all life on Earth. The thing is, why are we talking about this. Well, the story of life, all the way back to single celled microbes billions of years ago, is all part of our...
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The Medieval Islamicate World: Crash Course History of Science
The religion of Islam significantly influenced knowledge-making in the greater Mediterranean and western Asian world. Islamicate scholars—meaning people influenced by Islamic civilization, regardless of their religious views—gave us...
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Capitalism, Communism, & Political Economies: Crash Course Geography
Just like many great duos throughout history, Bulgaria and Germany have a fascinating (though uneven) relationship. In today’s episode, we’re going to take a closer look at the impact of politics on economies as we trace this history of...
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Georges Melies - Master of Illusion: Crash Course Film History
After the Lumiere brothers and Thomas Edison got the ball rolling with Vaudeville acts and Actualites, the time was coming for movie magic and fiction to make an appearance. The time was coming of filmmakers like Georges Melies and Alice...
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The Americas and Time Keeping: Crash Course History of Science
In this episode of Crash Course History of Science, we travel to the Americas to ask the question, "When are we?" and get some answers. We'll look at the Maya, Inca, and Olmec civilizations and how they recorded their science.
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Casual Gaming: Crash Course Games
Today, we're moving on from game consoles to talk about a bigger shift that was happening in the gaming industry. In the mid 2000s, we saw a proliferation of Internet accessible devices and with them gaming would expand to a new...
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Monetary and Fiscal Policy: Crash Course Government and Politics
Today, Craig is going to dive into the controversy of monetary and fiscal policy. Monetary and fiscal policy are ways the government, and most notably the Federal Reserve, influences the economy - for better or for worse. So we’re going...
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Theories of Gender: Crash Course Sociology
Why is gender even a thing? To answer that, we’re going back to our three sociological paradigms and how each school of thought approaches gender theory. We’ll look at the structural functionalist view that gender is a way of organizing...
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How Words Can Harm: Crash Course Philosophy
Content warning: today’s episode contains language that some viewers might find upsetting and that may not be viewable in all settings. We’ve talking about how language works and how powerful it can be. Sometimes, that power can be...
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High Mass Stars
Massive stars fuse heavier elements in their cores than lower mass stars. This leads to the creation of heavier elements up to iron. Iron robs critical energy from the core, causing it to collapse. The shock wave, together with a huge...