Crash Course
Perceiving is Believing - Crash Course Psychology
So what does perception even mean? What's the difference between seeing something and making sense of it? In today's episode of Crash Course Psychology, Hank gives us some insight into the differences between sensing and...
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Data & Infographics: Crash Course Navigating Digital Information #8
Today, we're going to discuss how numbers, like statistics, and visual representations like charts and infographics can be used to help us better understand the world or profoundly deceive. Data is a really powerful form of evidence...
Crash Course
Water and Solutions -- for Dirty Laundry: Crash Course Chemistry
Dihydrogen monoxide (better know as water) is the key to nearly everything. It falls from the sky, makes up 60% of our bodies, and just about every chemical process related to life takes place with it or in it. Without it, none of the...
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Types of Bureaucracies: Crash Course Government and Politics
This week Craig Benzine breaks down the different types of bureaucracies. I mean sure, they’re all part of the executive branch, but some work more directly with the president than others. Some bureaucracies exist solely to independently...
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Florence and the Renaissance: Crash Course European History
The Renaissance was a cultural revitalization that spread across Europe, and had repercussions across the globe, but one smallish city-state in Italy was in many ways the epicenter of the thing. Florence, or as Italians might say,...
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Supervised Machine Learning - Crash Course Statistics
We've talked a lot about modeling data and making inferences about it, but today we're going to look towards the future at how machine learning is being used to build models to predict future outcomes. We'll discuss three popular types...
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Unsupervised Machine Learning - Crash Course Statistics
Today we're going to discuss how machine learning can be used to group and label information even if those labels don't exist. We'll explore two types of clustering used in Unsupervised Machine Learning: k-means and Hierarchical...
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Why Human Ancestry Matters: Crash Course Big History 205
This week, Emily Graslie is teaching you about human ancestry and geneaology, how we got to be the species we are, and why that matters in our zoomed out look at Big History.
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The End of Civilization (In the Bronze Age): Crash Course World History 211
In which John Green teaches you about the Bronze Age civilization in what we today call the middle east, and how the vast, interconnected civilization that encompassed Egypt, The Levant, and Mesopotamia came to an end. What's that you...
Crash Course
The Transatlantic Slave Trade Crash Course Black American History
Today we're learning about the Transatlantic Slave Trade, which brought millions of captive Africans to the Americas between the 16th and 19th centuries, with the largest number of people trafficked between 1700 and 1808. We'll look at...
Crash Course
Presidential Power: Crash Course Government and Politics
This week Craig looks at the expressed powers of the President of the United States - that is the ones you can find in the Constitution. From appointing judges and granting pardons, to vetoing laws and acting as the nation’s chief...
Crash Course
World War II: Black American History
Black Americans have long fought in America's wars, very often fighting for a country that doesn't always fight for them. Today we'll learn about the experience of Black Americans in World War II. We'll look at the ways Black men and...
Crash Course
Karl Popper, Science, & Pseudoscience: Crash Course Philosophy
The early 1900s was an amazing time for Western science, as Albert Einstein was developing his theories of relativity and psychology was born, as Sigmund Freud and psychoanalysis took over the scientific mainstream. Karl Popper observed...
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Derivatives: Crash Course Physics
CALCULUS! Today we take our first steps into the language of Physics; mathematics. Every branch of science has its own way to describe the things that it investigates. And, with Physics, that's math. In this episode, Shini talks us...
Crash Course
Work, Energy, and Power: Crash Course Physics
When you hear the word, "Work," what is the first thing you think of? Maybe sitting at a desk? Maybe plowing a field? Maybe working out? Work is a word that has a little bit of a different meaning in Physics and today, Shini is going to...
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Mitosis: Splitting Up is Complicated - Crash Course Biology
Hank describes mitosis and cytokinesis - the series of processes our cells go through to divide into two identical copies.
Crash Course
The Poetry of Sylvia Plath: Crash Course Literature 216
In which John Green teaches you about the poetry of Sylvia Plath. When a lot of people think about Sylvia Plath, they think about her struggles with mental illness and her eventual suicide. Her actual work can get lost in the shuffle a...
Crash Course
When is Thanksgiving Colonizing America Crash Course US History
In which John Green teaches you about the (English) colonies in what is now the United States. He covers the first permanent English colony at Jamestown, Virginia, the various theocracies in Massachusetts, the feudal kingdom in Maryland,...
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Hackers & Cyber Attacks: Crash Course Computer Science
Today we're going to talk about hackers and their strategies for breaking into computer systems. Now, not all hackers are malicious cybercriminals intent on stealing your data (these people are known as Black Hats). There are also White...
Crash Course
The Nervous System, Part 3 - Synapses!: Crash Course A&P
We continue our tour of the nervous system with a look at synapses and the crazy stuff cocaine does to your body.
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Table of Contents:
Electrical Synapses Use Ion Currents Over Gap Junctions to Transmit Neurological Signals...
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Why Human Evolution Matters: Crash Course Big History 204
This week on Crash Course Big History, Emily is talking about process of human evolution, and the knack for innovation that has allowed humans to become so dominant on the Earth. Human innovation, and the ability to build on those...
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Natural Hazards: Crash Course Geography
Today we wrap up the first half of our series on physical geography by taking a closer look at natural hazards - which are physical processes like heat waves and cyclones, earthquakes and volcanic eruptions, and floods and droughts. And...
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Reform and Revolution 1815-1848: Crash Course European History
In the aftermath of the revolutions and upheaval in 18th and early 19th century Europe, there was a hunger for reform across the continent. Reformers like Robert Owen, Charles Fourier, and Auguste Comte proposed radical new ideas, and at...
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Global Stratification & Poverty: Crash Course Sociology
This week we’re taking our discussion of stratification global. We’ll look at First and Third World countries and the reasons why these terms are no longer used. We’ll introduce the four types of country categories we now use: high...