CrashCourse

If almost everybody masturbates, why can’t we talk about it? In this myth-busting episode of Crash Course Sex Ed, we’ll uncover the history of how masturbation became taboo, the person who made sex toys better for everyone, and the ways masturbation can actually be good for you.

Introduction: Masturbation Is Normal 00:00
Who Masturbates? 0:28
Gosnell Duncan & Sex Toys 1:22
Benefits of Masturbation 2:48
Masturbation Myths 4:37
Review & Credits 7:05

Sources:
https://docs.google.com/document/d/1d7cG1ZMhBTROD2ZiMGiDwFwklPJAFgtip1RPkYVNvkg/edit?usp=sharing

For more information on the topics in this episode, check out this resource from our partners at the Kinsey Institute (https://kinseyinstitute.org/): https://drive.google.com/drive/folders/1mSu0MerCwVUmNpya61JVIE4Wdsdkrgbk

Read more about these topics here:
Planned Parenthood - https://www.plannedparenthood.org/learn/sex-pleasure-and-sexual-dysfunction/masturbation
***
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Shruti S, Brandon Thomas, Emily Beazley, Forrest Langseth, oranjeez, Quinn Harden, Rie Ohta, Reed Spilmann, Elizabeth LaBelle, Jack Hart, Leah H., UwU, Barbara Pettersen, Kevin Knupp, Andrew Woods, David Fanska, Ken Davidian, Stephen Akuffo, Kyle & Katherine Callahan, Toni Miles, Steve Segreto, Samantha, Laurel Stevens, Kristina D Knight, Krystle Young, Alan Bridgeman, Scott Harrison, Perry Joyce, Sarah & Nathan Catchings, Duncan W Moore IV, Bernardo Garza, Breanna Bosso, team dorsey, Jennifer Killen, Matt Curls, Trevin Beattie, Eric Koslow, John Lee, Indija-ka Siriwardena, Jason Rostoker, Pietro Gagliardi, Alex Hackman, Ken Penttinen, Barrett Nuzum, ClareG, Nathan Taylor, Siobhán, Rizwan Kassim, Constance Urist, Les Aker, Triad Terrace, Stephen McCandless, Jason Buster, Thomas Greinert, Emily T, Katie Dean, Evol Hong, Tandy Ratliff, Joseph Ruf, Wai Jack Sin, Ian Dundore, Caleb Weeks
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Hank tells us the story of the complicated chemical dance that allows our skeletal muscles to contract and relax.

Table of Contents
1) Cardiac, Smooth, & Skeletal Muscles 01:09
2) Muscle Anatomy 02:03
a) Muscle Fibers 03:07
b) Myofibrils 04:15:1
c) Sarcomeres 04:19:1
d) Myofilaments 04:37:2
3) Biolography 05:37:1
4) Sliding Filament Model 07:47

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Hank takes you on a tour of your two-part autonomic nervous system. This episode explains how your sympathetic nervous system and parasympathetic nervous system work together as foils, balancing each other out. Their key anatomical differences - where nerve fibers originate and where their ganglia are located - drive their distinct anatomical functions, making your sympathetic nervous system the "fight or flight" while your parasympathetic nervous system is for "resting and digesting."

Pssst... we made flashcards to help you review the content in this episode! Find them on the free Crash Course App!
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Chapters:
Introduction: Autonomic Nervous System 00:00
Sympathetic & Parasympathetic Nervous Systems 1:35
Origins - Comparing the Sympathetic & Parasympathetic Nervous Systems 3:23
Ganglia - Comparing the Sympathetic & Parasympathetic Nervous Systems 4:11
Axon Lengths - Comparing the Sympathetic & Parasympathetic Nervous Systems 5:30
Review 7:35
Credits 8:28

***

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Mark Brouwer, Simun Niclasen, Brad Wardell, Roger C. Rocha, Jan Schmid, Elliot Beter, Nevin Spoljaric, Sandra Aft, SR Foxley, Jessica Simmons, Stefan R. Finnerup, Jason A Saslow, Robert Kunz, Jessica Wode, Mike Drew, Steve Marshall, Anna-Ester Volozh, Christian Ludvigsen, Jeffrey Thompson, James Craver, Caitlin Steinert, BryanGriffith.com, Maia McGuire, That one guy from Midland who teaches science at highschool, Michael Longwell, Justice H, Martha (splicegrrl), Casey Rule, Manuel Kovats, and @simplscientist

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What does it mean to be kinky? In our final episode of Crash Course Sex Ed, we’ll learn that some “unusual” sexual desires are actually pretty common. We’ll talk about the differences between kinks, fetishes, and paraphilias, and the subjective nature of what’s “normal.”

Introduction: Is This Normal? 00:00
Kinks 0:40
Why Are People Kinky? 1:59
Fetishes 2:46
BDSM 3:39
Paraphilias 5:23
Review & Credits 6:36

Sources:
https://docs.google.com/document/d/1d7cG1ZMhBTROD2ZiMGiDwFwklPJAFgtip1RPkYVNvkg/edit?usp=sharing

For more information on the topics in this episode, check out this resource from our partners at the Kinsey Institute (https://kinseyinstitute.org/): https://drive.google.com/drive/folders/1mSu0MerCwVUmNpya61JVIE4Wdsdkrgbk

Read more about these topics here:
Besider - https://www.bedsider.org/features/1437-how-to-respond-when-your-partner-shares-a-kink-with-you

***
Support us for $5/month on Patreon to keep Crash Course free for everyone forever! https://www.patreon.com/crashcourse
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Thanks to the following patrons for their generous monthly contributions that help keep Crash Course free for everyone forever:
Shruti S, Brandon Thomas, Emily Beazley, Forrest Langseth, oranjeez, Quinn Harden, Rie Ohta, Reed Spilmann, Elizabeth LaBelle, Jack Hart, Leah H., UwU, Barbara Pettersen, Kevin Knupp, Andrew Woods, David Fanska, Ken Davidian, Stephen Akuffo, Kyle & Katherine Callahan, Toni Miles, Steve Segreto, Samantha, Laurel Stevens, Kristina D Knight, Krystle Young, Alan Bridgeman, Scott Harrison, Perry Joyce, Sarah & Nathan Catchings, Duncan W Moore IV, Bernardo Garza, Breanna Bosso, team dorsey, Jennifer Killen, Matt Curls, Trevin Beattie, Eric Koslow, John Lee, Indija-ka Siriwardena, Jason Rostoker, Pietro Gagliardi, Alex Hackman, Ken Penttinen, Barrett Nuzum, ClareG, Nathan Taylor, Siobhán, Rizwan Kassim, Constance Urist, Les Aker, Triad Terrace, Stephen McCandless, Jason Buster, Thomas Greinert, Emily T, Katie Dean, Evol Hong, Tandy Ratliff, Joseph Ruf, Wai Jack Sin, Ian Dundore, Caleb Weeks
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In which John Green talks about the many revolutions of Latin America in the 19th century. At the beginning of the 1800s, Latin America was firmly under the control of Spain and Portugal. The revolutionary zeal that had recently created the United States and had taken off Louis XVI's head in France arrived in South America, and a racially diverse group of people who felt more South American than European took over. John covers the soft revolution of Brazil, in which Prince Pedro boldly seized power from his father, but promised to give it back if King João ever returned to Brazil. He also covers the decidedly more violent revolutions in Mexico, Venezuela, and Argentina. Watch the video to see Simón Bolívar's dream of a United South America crushed, even as he manages to liberate a bunch of countries and get two currencies and about a thousand schools and parks named after him.

Chapters:
Introduction: Latin American Revolutions 00:00
Spheres of Influence: Spain, the Catholic Church, and the Patriarchy 0:37
Latin American Culture 2:12
Brazilian Independence 3:29
Mexican Independence 5:31
Venezuelan Independence 7:59
An Open Letter to Simón Bolívar 9:15
The Legacy of the Latin American Revolutions 10:25
Credits 12:49

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Archaeology and anthropology are amazingly interesting fields, but they also have a legacy of dehumanizing and mistreating Native peoples. In this episode of Crash Course Native American History, we’ll uncover the dark history of Native grave robbing, explore the ways these fields are righting past wrongs, and discover the story of one Inuk’s journey to honor his late father.

Introduction: Minik's Story 00:00
Anthropology & Archaeology 0:45
Native Grave Robbing 1:32
The Death of Qisuk 4:09
Changing Legislation 5:26
Decolonized Archaeology & Anthropology 8:23
Review & Credits 10:21


Sources:
https://docs.google.com/document/d/1g1BpQk_2qXtFeQBffoAT-rrogcKRaA2eNjeRCpmCrJ8/edit?usp=sharing

Want to know more about how this series was made? Learn more here: https://docs.google.com/document/d/17yp3u28s40TdjyrJniIf4U9YA8wPtvQ1g1B-HSHQ2Q4/edit?tab=t.0#heading=h.6vtzps565m2

***
Support us for $5/month on Patreon to keep Crash Course free for everyone forever! https://www.patreon.com/crashcourse
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Thanks to the following patrons for their generous monthly contributions that help keep Crash Course free for everyone forever:
Shruti S, Brandon Thomas, Emily Beazley, Forrest Langseth, oranjeez, Quinn Harden, Rie Ohta, Reed Spilmann, Elizabeth LaBelle, Jack Hart, Leah H., UwU, Barbara Pettersen, Kevin Knupp, Andrew Woods, David Fanska, Ken Davidian, Stephen Akuffo, Kyle & Katherine Callahan, Toni Miles, Steve Segreto, Samantha, Laurel Stevens, Kristina D Knight, Krystle Young, Alan Bridgeman, Scott Harrison, Perry Joyce, Sarah & Nathan Catchings, Duncan W Moore IV, Bernardo Garza, Breanna Bosso, team dorsey, Jennifer Killen, Matt Curls, Trevin Beattie, Eric Koslow, John Lee, Indija-ka Siriwardena, Jason Rostoker, Pietro Gagliardi, Alex Hackman, Ken Penttinen, Barrett Nuzum, ClareG, Nathan Taylor, Siobhán, Rizwan Kassim, Constance Urist, Les Aker, Triad Terrace, Stephen McCandless, Jason Buster, Thomas Greinert, Emily T, Katie Dean, Evol Hong, Tandy Ratliff, Joseph Ruf, Wai Jack Sin, Ian Dundore, Caleb Weeks
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Hank introduces us to the framework of our bodies, our skeleton, which apart from being the support and protection for all our fleshy parts, is involved in many other vital processes that help our bodies to function properly.

Table of Contents
1) Endoskeleton 2:03
2) Biolography 3:27
3) New Bone Formation 6:36
4) Bone Structure 8:00
5) Bone Remodeling 9:48

References:
Campbell Biology, 9th ed.
http://faculty.fmcc.suny.edu/mcdarby/animals&plantsbook/animals/07-Arthropods.htm
http://www.cod.edu/people/faculty/fancher/Size.htm
http://www.ncbi.nlm.nih.gov/pubmed/17308163
http://www.shwachmandiamondamerica.org/blood_and_Marrow.htm
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3001285/l
http://en.wikipedia.org/wiki/Andreas_Vesalius
http://projectskeletal.tripod.com/Scientists.htm


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The scientific method isn’t the only way to gain knowledge—Native people have been learning and innovating in their own ways for millennia. In this episode of Crash Course Native American History, we’ll discover the ways Western science and Indigenous knowledge can braid together to create a better world.

Introduction: Trees Talk 00:00
Ways of Knowing 0:42
Medicine Wheels 2:18
Native Innovations 3:27
Braiding Knowledge 4:49
Native Ecology 6:32
Review & Credits 7:49

Sources:
https://docs.google.com/document/d/1g1BpQk_2qXtFeQBffoAT-rrogcKRaA2eNjeRCpmCrJ8/edit?usp=sharing

Want to know more about how this series was made? Learn more here: https://docs.google.com/document/d/17yp3u28s40TdjyrJniIf4U9YA8wPtvQ1g1B-HSHQ2Q4/edit?tab=t.0#heading=h.6vtzps565m2


***
Support us for $5/month on Patreon to keep Crash Course free for everyone forever! https://www.patreon.com/crashcourse
Or support us directly: https://complexly.com/support
Join our Crash Course email list to get the latest news and highlights: https://mailchi.mp/crashcourse/email
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Thanks to the following patrons for their generous monthly contributions that help keep Crash Course free for everyone forever:
Quinn Harden, SpaceRangerWes, Roger Harms, David Fanska, EllenBryn, Leah H., Gina Mancuso, Emily Beazley, Brandon Thomas, Johnathan Williams, Michael Maher, Shruti S, Jennifer Wiggins-Lyndall, Rie Ohta, Matthew Fredericksen, Jack Hart, oranjeez, Dalton Williams, Allison Wood, Jason Terpstra, Andrew Woods, Evan Nelson, Katie Hoban, Katrix , UwU, Chelsea S, Barbara Pettersen, Mitch Gresko, Forrest Langseth, Elizabeth LaBelle, Reed Spilmann, Thomas Sully, AThirstyPhilosopher ., Robby Nevels, Kevin Knupp, Ken Davidian, Kristina D Knight, Stephen McCandless, Scott Harrison, Bernardo Garza, Nathan Taylor, Rizwan Kassim, Breanna Bosso, Steve Segreto, Sarah & Nathan Catchings, Indija-ka Siriwardena, Duncan W Moore IV, Jason Rostoker, Samantha, Siobhán, Krystle Young, Matt Curls, ClareG, Trevin Beattie, Perry Joyce, Tanner Hedrick, Jennifer Killen, Eric Koslow, Alan Bridgeman, Ken Penttinen, Kyle & Katherine Callahan, Toni Miles, Alex Hackman, Jason Buster, Joseph Ruf, Thomas Greinert, Katie Dean, Laurel Stevens, Triad Terrace, Emily T, Pietro Gagliardi, Constance Urist, Les Aker, Stephen Akuffo, Barrett Nuzum, John Lee, team dorsey, Liz Wdow, Wai Jack Sin, Erminio Di Lodovico, Tandy Ratliff, Caleb Weeks, Evol Hong, Luke Sluder, Ian Dundore
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For the next half of this series, we will be discussing Human Geography — so we’ll still be looking at the Earth, but specifically, how human activity affects and is influenced by the Earth. Naturally, we thought the best place to start was to discuss how we name things in the first place! As it turns out, a name carries so much history of a place but also represents the political power and evolving perception of that space. So today, we’re going to tell the story of the highest point in North America - a mountain known by many names including Mount McKinley and Denali.

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Ideas like liberty, freedom, and self-determination were hot stuff in the late 18th century, as evidenced by our recent revolutionary videos. Although freedom was breaking out all over, many of the societies that were touting these ideas relied on slave labor. Few places in the world relied so heavily on slave labor as Saint-Domingue, France's most profitable colony. Slaves made up nearly 90% of Saint-Domingue's population, and in 1789 they couldn't help but hear about the revolution underway in France. All the talk of liberty, equality, and fraternity sounded pretty good to a person in bondage, and so the slaves rebelled. This led to not one but two revolutions and ended up with France, the rebels, Britain, and Spain all fighting in the territory. Spoiler alert: the slaves won. So how did the slaves of what would become Haiti throw off the yoke of one of the world's great empires? John Green tells how they did it, and what it has meant in Haiti and in the rest of the world.

Chapters:
Introduction: The Haitian Revolution 00:00
The Saint-Domingue Colony 0:30
Slavery in Haiti 3:08
Radical Petit Blancs 4:24
Toussaint L'ouverture Leads Saint-Domingue to Independence 5:37
Revolution Part 2: France Returns 7:45
An Open Letter to Disease 9:10
Haiti Gains Independence 10:13
Why the Haitian Revolutions Matter 10:58
Credits 11:49

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