In which John Green explores F. Scott Fitzgerald's novel of the Jazz Age, The Great Gatsby. John introduces you to Nick Carraway, Jay Gatsby, Daisy and Tom Buchanan, and the other characters in the novel, and tries to look beyond the surface story to figure out what this thing is ABOUT. Set in the 1920s against a conflicted backdrop of prohibition and excess, The Great Gatsby takes a close look at the American Dream as it existed in Fitzgerald's time. It turns out, it had a lot to do with money and status, and it still does today. John will cover the rich symbolism of the novel, from the distant green light to the pale gold of wealth and decay. Also, Paris Hilton drops by.

Turn on the captions. You'll like it.

Consider supporting local bookstores by purchasing your books through our Bookshop affiliate link https://bookshop.org/shop/complexly or at your local bookseller.

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So, during times of inflation or deflation, why doesn't the government just set prices? It sounds reasonable, but price ceilings or floors just don't work. Adriene and Jacob explain why. Subsidies, however, are a little different, and sometimes they even work. We'll also explain that. Today you'll learn about stuff like price controls, deadweight loss, subsidies, and efficiency.

Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse

Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever:

Mark, Eric Kitchen, Jessica Wode, Jeffrey Thompson, Steve Marshall, Moritz Schmidt, Robert Kunz, Tim Curwick, Jason A Saslow, SR Foxley, Elliot Beter, Jacob Ash, Christian, Jan Schmid, Jirat, Christy Huddleston, Daniel Baulig, Chris Peters, Anna-Ester Volozh, Ian Dundore, Caleb Weeks

--

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In which John Green teaches you about one of the least funny subjects in history: slavery. John investigates when and where slavery originated, how it changed over the centuries, and how Europeans and colonists in the Americas arrived at the idea that people could own other people based on skin color.

Slavery has existed as long as humans have had civilization, but the Atlantic Slave Trade was the height, or depth, of dehumanizing, brutal, chattel slavery. American slavery ended less than 150 years ago. In some parts of the world, it is still going on. So how do we reconcile that with modern life? In a desperate attempt at comic relief, Boba Fett makes an appearance.

Learn more about the Transatlantic Slave Trade in Episode #1 of Crash Course Black American History here: https://youtu.be/S72vvfBTQws

Chapters:
Introduction 00:00
The Atlantic Slave Trade 0:30
The History of European Slave Trade 1:12
How Africans Became Enslaved 1:54
Living Conditions of Enslaved People 2:55
An Open Letter to the Word 'Slave' 5:41
What is the Definition of Slavery? 6:45
Other Models of Slavery: Greek, Roman, Judeo-Christian, and Muslim 7:26
Credits 10:35

Resources:
Inhuman Bondage by David Brion Davis: https://bit.ly/3vdSdTX
Up From Slavery by Booker T Washington: https://bit.ly/3JJlxH4

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Today Phil explores the world of tides! What is the relationship between tides and gravity? How do planets and their moons become tidally locked? What would happen if you were 300km tall? Important questions.

Check out the Crash Course Astronomy solar system poster here: http://store.dftba.com/product....s/crashcourse-astron

--
Chapters:
Introduction 00:00
Gravity Over Distance 0:44
Tidal Force Parameters 1:35
Battle of the Bulges 2:55
High and Low Tides 3:47
Push & Pull 4:51
Tidal Lock 6:07
Sun Tides 6:58
Review 8:51
--

PBS Digital Studios: http://youtube.com/pbsdigitalstudios

Follow Phil on Twitter: https://twitter.com/badastronomer

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--

PHOTO/VIDEO CREDITS
Photo & video credit: "NASA's Scientific Visualization Studio"
http://svs.gsfc.nasa.gov/cgi-b....in/details.cgi?aid=4 Photo credit: "NASA's Scientific Visualization Studio"
https://www.flickr.com/photos/....gsfc/8556665115/in/p
http://svs.gsfc.nasa.gov/cgi-b....in/details.cgi?aid=1
The Hopewell Rocks - https://www.youtube.com/watch?v=EnDJ6_XpGfo

I'm sure you've heard of Pavlov's Bell, but what was Ivan Pavlov up to, exactly? And how are our brains trained? And what is a "Skinner Box"? All those questions and more are answered in today's Crash Course Psychology, in which Hank talks about some of the aspects of learning.

Want more videos about psychology? Check out our sister channel SciShow Psych at https://www.youtube.com/scishowpsych!
--
Chapters:
Introduction: Ivan Pavlov 00:00
Associative Learning 1:33
Classical Conditioning 2:47
Behaviorist Theory 4:22
Watson's Experiments 4:46
Operant Conditioning 5:42
Positive & Negative Reinforcement 7:18
Primary Reinforcers & Conditioned Reinforcers 8:54
Reinforcement Scheduling 9:32
Review & Credits 11:00
--

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You may think you know all about hypnosis from the movies. Zoolander, The Manchurian Candidate, etc... but there's a whole lot more going on. In this episode of Crash Course Psychology, Hank tells us about some of the many altered states of consciousness, including hypnosis.

Want more videos about psychology? Check out our sister channel SciShow Psych at https://www.youtube.com/scishowpsych

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Chapters:
Introduction: Hypnosis & Altered States of Consciousness 00:00
Facts & Fallacies About Hypnosis 2:00
How does hypnosis work? 3:05
Drug Tolerance & Neuroadaptation 4:49
Psychoactive Drugs 5:51
Depressants 6:28
Stimulants 7:35
Hallucinogens/Psychedelics 9:04
Non-Drug Induced Hallucinations 9:33
Review & Credits 10:32
--

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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 helps us to figure out who Entrepreneurs are, and what that title actually means.


***

Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse

Thanks to the following patrons for their generous monthly contributions that help keep Crash Course free for everyone forever:

Eric Prestemon, Sam Buck, Mark Brouwer, Timothy J Kwist, Brian Thomas Gossett, Haxiang N/A Liu, Jonathan Zbikowski, Siobhan Sabino, Zach Van Stanley, Bob Doye, Jennifer Killen, Nathan Catchings, Brandon Westmoreland, dorsey, Indika Siriwardena, Kenneth F Penttinen, Trevin Beattie, Erika & Alexa Saur, Justin Zingsheim, Jessica Wode, Tom Trval, Jason Saslow, Nathan Taylor, Khaled El Shalakany, SR Foxley, Sam Ferguson, Yasenia Cruz, Eric Koslow, Caleb Weeks, Tim Curwick, David Noe, Shawn Arnold, William McGraw, Andrei Krishkevich, Rachel Bright, Jirat, Ian Dundore
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Hank describes how cells regulate their contents and communicate with one another via mechanisms within the cell membrane.

"Concert" music used with permission from Chameleon Circuit.
This video uses sounds from Freesound.org

Table of Contents time codes:
1) Passive Transport - 1:17
2) Diffusion - 1:25
3) Osmosis - 2:12
4) Channel Proteins- 4:37
5) Active Transport - 4:58
6) ATP - 5:37
7) Transport Proteins - 6:19
8) Biolography - 6:37
9) Vesicular Transport - 9:02
10) Exocytosis - 9:21
11) Endocytosis - 9:50
12) Phagocytosis - 9:57
13) Pinocytosis - 10:29
14) Receptor-Mediated Endocytosis - 10:48

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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 evolutionary perspectives on motivation.

Want more videos about psychology? Check out our sister channel SciShow Psych at https://www.youtube.com/scishowpsych!

--
Chapters:
Introduction: Motivation 00:00
What is Motivation? 1:08
Evolutionary Perspective: Instincts 1:29
Drive-Reduction Theory: Homeostasis & Incentives 2:37
Optimal Arousal 3:39
Maslow's Hierarchy of Needs 4:49
How Sex Motivates Us 5:29
How Hunger Motivates Us 6:32
Effects of Hunger & Starvation 7:59
How Social Belonging Motivates Us 9:33
Review & Credits 10:34
--
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In which John Green teaches you how the Civil War played a large part in making the United States the country that it is today. He covers some of the key ways in which Abraham Lincoln influenced the outcome of the war, and how the lack of foreign intervention also helped the Union win the war. John also covers the technology that made the Civil War different than previous wars. New weapons helped to influence the outcomes of battles, but photography influenced how the public at large perceived the war. In addition, John gets into the long-term effects of the war, including the federalization and unification of the United States. All this plus homesteading, land grant universities, railroads, federal currency, and taxes.

Check out the US National Archives Flickr. They have an awesome collection of Matthew Brady Civil War photography here: http://www.flickr.com/photos/u....snationalarchives/co

Hey teachers and students - Check out CommonLit's free collection of reading passages and curriculum resources to learn more about the events of this episode. One of the most influential moments of the Civil War was when President Lincoln issued the Emancipation Proclamation: https://www.commonlit.org/text....s/the-emancipation-p
However, Lincoln faced a long and difficult road before abolishing slavery, as seen in his relationship with Frederick Douglass: https://www.commonlit.org/text....s/abolishing-slavery
When President Lincoln was assassinated, the nation grieved and pondered how it would recover from the Civil War: https://www.commonlit.org/text....s/o-captain-my-capta

Learn more about the Civil War, Frederick Douglass, and more in Crash Course Black American History:
Frederick Douglass (#17): https://www.youtube.com/watch?v=7QOTexnD-NE
Black Americans in the Civil War (#18): https://www.youtube.com/watch?v=_NgdnsjPFNE

Chapters:
Introduction 00:00
Did Lincoln Free the Slaves? 0:59
How Some Slaves Freed Themselves 1:55
Why Lincoln Signed the Emancipation Proclamation 2:41
The Gettysburg Address 4:20
The First Modern War 5:01
Mystery Document 6:04
Matthew Brady - Civil War Photographer 6:26
A New Nation 7:01
The Homestead Act, Morrill Land Grant Act, and Pacific Railway Act 8:16
Financing the Civil War 8:54
Post-War Industrialization 9:37
Credits 10:21

Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse

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Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse


Last week, we met the Presocratics: despite having by any reasonable standard invented science in Europe, these thinkers are lumped together today as simply “not Socrates.”
So who was this smarty pants? In this episode Hank talks to us about Socrates and his two important students, Plato and Aristotle.

Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever:

Mark Brouwer, Glenn Elliott, Justin Zingsheim, Jessica Wode, Eric Prestemon, Kathrin Benoit, Tom Trval, Jason Saslow, Nathan Taylor, Divonne Holmes à Court, Brian Thomas Gossett, Khaled El Shalakany, Indika Siriwardena, Robert Kunz, SR Foxley, Sam Ferguson, Yasenia Cruz, Eric Koslow, Caleb Weeks, Tim Curwick, Evren Türkmenoğlu, Alexander Tamas, D.A. Noe, Shawn Arnold, mark austin, Ruth Perez, Malcolm Callis, Ken Penttinen, Advait Shinde, Cody Carpenter, Annamaria Herrera, William McGraw, Bader AlGhamdi, Vaso, Melissa Briski, Joey Quek, Andrei Krishkevich, Rachel Bright, Alex S, Mayumi Maeda, Kathy & Tim Philip, Montather, Jirat, Eric Kitchen, Moritz Schmidt, Ian Dundore, Chris Peters, Sandra Aft, Steve Marshall
--

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In which John covers the long, long history of ancient Egypt, including the Old, Middle, and New Kingdoms, and even a couple of intermediate periods. Learn about mummies, pharaohs, pyramids, and the Nile with John Green.

Chapters:
Introduction: Ancient Egypt 00:00
How The Nile Shaped Egypt 1:57
The Old Kingdom of Egypt 4:02
The Middle Kingdom of Egypt 6:29
The New Kingdom of Egypt 7:54
An Open Letter to King Tut 9:18
Credits 11:14

Resources:
Mummies!: https://goo.gl/BvAdmj
Pyramids!: http://goo.gl/aCov2j

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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 of nutrients is what makes the incredible diversity of life possible. We'll also take a look at the patterns we see in the main global biomes, show you why some biomes (like tropical rainforests) are so productive, and discuss an agricultural practice some farmers have employed to help preserve their local ecosystems.

Watch our videos and review your learning with the Crash Course App!
Download here for Apple Devices: https://apple.co/3d4eyZo
Download here for Android Devices: https://bit.ly/2SrDulJ

Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse

Thanks to the following patrons for their generous monthly contributions that help keep Crash Course free for everyone forever:

Alexis B, Rene Duedam, Burt Humburg, Aziz, Nick, DAVID MORTON HUDSON, Perry Joyce, Scott Harrison, Mark & Susan Billian, Junrong Eric Zhu, Alan Bridgeman, Jennifer Smith, Matt Curls, Tim Kwist, Jonathan Zbikowski, Jennifer Killen, Sarah & Nathan Catchings, Brandon Westmoreland, team dorsey, Trevin Beattie, Eric Koslow, Indika Siriwardena, Khaled El Shalakany, Shawn Arnold, Siobhán, Ken Penttinen, Nathan Taylor, William McGraw, Laura Damon, Andrei Krishkevich, Sam Ferguson, Eric Prestemon, Jirat, Brian Thomas Gossett, Wai Jack Sin, Ian Dundore, Jason A Saslow, Justin, Jessica Wode, Mark, Caleb Weeks
__

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#CrashCourse #Geography #Ecosystems

In which John Green teaches you about the European Renaissance. European learning changed the world in the 15th and 16th centuries, but was it a cultural revolution, or an evolution? We'd argue that any cultural shift that occurs over a couple of hundred years isn't too overwhelming to the people who live through it. In retrospect though, the cultural bloom in Europe during this time was pretty impressive. In addition to investigating what caused the Renaissance and who benefitted from the changes that occurred, John will tell you just how the Ninja Turtles got mixed up in all this.

Chapters:
Introduction: The Renaissance 00:00
Themes in Renaissance Art 1:07
Humanist Scholars of the Renaissance Era 1:48
When was the Renaissance? 2:52
Why the Renaissance Happened in Italy 3:23
Florentine Textiles 5:08
How Islamic Scholars Helped Create the European Renaissance 6:30
An Open Letter to Copernicus 7:17
Why the Renaissance Didn't Happen 8:12
Credits 10:56

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In which Jacob and Adriene teach you about the evils of fiscal policy and stimulus. Well, maybe the policies aren't evil, but there is an evil lair involved. In this episode we learn how government use taxes and spending influence the economy. Sometimes the government gives, and sometimes it takes. And the giving and the taking can have a profound effect on how economies behave.

Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse

Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever:

Mark , Elliot Beter, Moritz Schmidt, Jeffrey Thompson, Ian Dundore, Jacob Ash, Jessica Wode, Today I Found Out, Christy Huddleston, James Craver, Chris Peters, SR Foxley, Steve Marshall, Simun Niclasen, Eric Kitchen, Robert Kunz, Avi Yashchin, Jason A Saslow, Jan Schmid, Daniel Baulig, Christian , Anna-Ester Volozh

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Crash Course Anatomy & Physiology continues the journey through sensory systems with a look at how your sense of hearing works. We follow sounds as they work their way into the ear where they are registered and transformed into action potentials. This mechanism not only helps you hear but also helps maintain your equilibrium.

Pssst... we made flashcards to help you review the content in this episode! Find them on the free Crash Course App!
Download it here for Apple Devices: https://apple.co/3d4eyZo
Download it here for Android Devices: https://bit.ly/2SrDulJ

Chapters:
Introduction 00:00
How Sound Works 1:17
External Ear Structure & Function 2:18
Middle Ear Structure & Function 3:06
Inner Ear Labyrinth 4:12
Cochlea: Basilar Membrane 5:00
Cochlea: Organ of Corti 6:33
Equilibrium: Vestibular Apparatus 7:34
What Causes Motion Sickness? 9:04
Review 9:39
Credits 10:13

***

Crash Course is now on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse

Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever:

Mark Brouwer, Jan Schmid, Steve MarshallAnna-Ester Volozh, Sandra Aft, Brad Wardell, Christian Ludvigsen, Robert Kunz, Jason, A Saslow, Jacob Ash, Jeffrey Thompson, Jessica Simmons, James Craver, Simun Niclasen, SR Foxley, Roger C. Rocha, Nevin, Spoljaric, Eric Knight, Elliot Beter, Jessica Wode, Belinda Pearson, Caroline S., Ariela Karp and Gavi Lazan, Elizabeth Gregory, Amelia Gorlick, Andrea Black, Bill Wolf, Patrick Audley, Caitrin McCullough, Brandi Gates

--

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Today we are taking all the things we have learned this year about doing philosophy and applying that to moral considerations regarding non-human animals. We’ll explore what philosophers like Peter Singer and Carl Cohen have to say about their use, including the concept of equal consideration of interests.

--

All other images and video either public domain or via VideoBlocks, or Wikimedia Commons, licensed under Creative Commons BY 4.0: https://creativecommons.org/licenses/by/4.0/

Produced in collaboration with PBS Digital Studios: http://youtube.com/pbsdigitalstudios

--

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In which John Green teaches you about the American Revolution and the American Revolutionary War, which it turns out were two different things. John goes over the issues and events that precipitated rebellion in Britain's American colonies, and he also explores the ideas that laid the groundwork for the new American democracy. Find out how the tax bill from the Seven Years' War fomented an uprising, how the Enlightenment influenced the Founding Fathers, and who were the winners and losers in this conflict. (hint: many of the people living in the Colonies ended up losers) The Revolution purportedly brought freedom and equality to the Thirteen Colonies, but they weren't equally distributed. Also, you'll learn about America's love affair with commemorative ceramics and what happens when rich white guys take the reins from rich white guys and put together a society of, by, and for rich white guys.

Chapters:
Introduction: The American Revolution 00:00
Tensions Rising: The Stamp Act, Townsend Act, and Boston Massacre 0:52
An Open Letter to Tea 2:25
How Colonists Protested Unfair Taxation 3:10
British Loyalists & Sympathizers 5:02
Revolutionary Ideas: No Taxation 5:54
All Men are Created Equal? 7:07
The Enlightenment 7:58
Changes After the American Revolution 9:16
Credits 10:52

Learn more about the American Revolution in these other Crash Course videos:
Taxes & Smuggling - Prelude to Revolution: Crash Course US History #6: https://www.youtube.com/watch?v=Eytc9ZaNWyc
Who Won the American Revolution?: Crash Course US History #7: https://www.youtube.com/watch?v=3EiSymRrKI4
The American Revolution: Crash Course Black American History #8: https://youtu.be/y75yPx9WKHY

Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse

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In this episode of Crash Course Psychology, Hank takes a look at a few experiments that helped us understand how we develop as human beings. Things like attachment, separation anxiety, stranger anxiety, and morality are all discussed... also, a seriously unpleasant study with monkeys and fake mothers.

Want more videos about psychology? Check out our sister channel SciShow Psych at https://www.youtube.com/scishowpsych!
--
Chapters:
Introduction: Attachment 00:00
Harlow's Monkey Mother Experiment 0:47
Touch 2:16
Familiarity 3:01
Attachment Styles: Secure, Insecure Ambivalent, & Insecure Avoidant 3:57
The Importance of Attachment Styles 5:24
Developing Self-Concept 6:45
Parenting Models: Authoritarian, Permissive, & Authoritative 7:36
Kohlberg's Theory of Moral Development 8:18
Preconventional Morality Phase 9:27
Conventional Morality Phase 9:44
Postconventional Morality Phase 10:00
Review & Credits 10:48
--
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Hank introduces us to biogeochemical cycles by describing his two favorites: carbon and water. The hydrologic cycle describes how water moves on, above, and below the surface of the Earth, driven by energy supplied by the sun and wind. The carbon cycle does the same... for carbon!

Table of Contents
1) Hydrologic Cycle - 1:15
A) Clouds - 2:13
B) Runoff - 3:06
C) Oceans - 3:41
D) Evapotranspiration - 4:25

2) Carbon Cycle - 5:12
A) Plants - 5:48
B) Fossil Fuels - 6:40
C) Oceans - 7:12
D) Global Warming - 7:35


References
http://ga.water.usgs.gov/edu/w....atercyclecondensatio
http://harvardmagazine.com/200....2/11/the-ocean-carbo
http://www.visionlearning.com/....library/module_viewe

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