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CrashCourse episodes

  • Biological Molecules - You Are What You Eat: Crash Course Biology #3

    Hank talks about the molecules that make up every living thing - carbohydrates, lipids, and proteins - and how we find them in our environment and in the food that we eat.

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    20 min
  • What is Plate Tectonics: Crash Course Geology #10

    A long, long time ago, Earth was home to one giant super continent. So, what happened? In this episode of Crash Course Geology, we’ll break down plate tectonics and how it shapes Earth’s past, present, and future.

    Introduction: The Ring of Fire 00:00
    Plate Tectonics 0:34
    Continental Drift 4:39
    Future Continental Shifts 7:46
    Review & Credits 8:46

    Sources: https://docs.google.com/document/d/1RpwM8ZQPFk_DkzMJjMdtRrNGrJSNJ7FbgmQybSZ2Cqo/edit?tab=t.0

    Check out our CC Geology Extracurricular Playlist here: https://www.youtube.com/playlist?list=PL8dPuuaLjXtOmqnkvEtNVOrm0eaIjFjJ7

    ***
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    Thanks to the following patrons for their generous monthly contributions that help keep Crash Course free for everyone forever:
    Mike Cumings, Jr., NassauLinda, Chuck Smith, DexcilaDou, Martin G. Diller, Johnathan Williams, Allison Wood, Katrix , Jason Terpstra, Evan Nelson, Jennifer Wiggins-Lyndall, Dalton Williams, Chelsea S, Matthew Fredericksen, AThirstyPhilosopher ., Michael Maher, Mitch Gresko, Gina Mancuso, Roger Harms, Shruti S, Quinn Harden, Reed Spilmann, Brandon Thomas, Emily Beazley, Rie Ohta, oranjeez, UwU, Elizabeth LaBelle, Leah H., David Fanska, Andrew Woods, Kevin Knupp, Barbara Pettersen, Ken Davidian, Stephen Akuffo, Toni Miles, Steve Segreto, Kyle & Katherine Callahan, Laurel Stevens, Tanner Hedrick, Kristina D Knight, Samantha, Krystle Young, Perry Joyce, Scott Harrison, Alan Bridgeman, Breanna Bosso, Matt Curls, Jennifer Killen, Duncan W Moore IV, Sarah & Nathan Catchings, team dorsey, Bernardo Garza, Trevin Beattie, Pietro Gagliardi, John Lee, Eric Koslow, Indija-ka Siriwardena, Jason Rostoker, Siobhán, Ken Penttinen, Nathan Taylor, Barrett, Les Aker, ClareG, Rizwan Kassim, Constance Urist, Alex Hackman, Triad Terrace, Katie Dean, Jason Buster, Emily T, Stephen McCandless, Thomas, Joseph Ruf, Wai Jack Sin, Ian Dundore, Erminio Di Lodovico, Evol Hong, Tandy Ratliff, Caleb Weeks, Luke Sluder
    __

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    14 min
  • Office Hours: Water

    Hank answers some questions and responds to some concerns about his video on water. Watch that video here: http://www.youtube.com/watch?v=HVT3Y3_gHGg

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    7 min
  • How Do Mountains Form?: Crash Course Geology #11

    What can lift ocean creatures up to the top of Everest, bend rocks, cause earthquakes, and sink parts of continents under the sea? Join us on this week’s episode of Crash Course Geology as we investigate how some of the coolest geological forces around make mountains, faults, and may even one day turn Africa into a series of islands!

    Introduction: Mount Everest Fossils 00:00
    Creating Faults 0:57
    How Mountains are Made 4:05
    How Valleys are Made 6:45
    Review & Credits 8:24

    Sources: https://docs.google.com/document/d/1RpwM8ZQPFk_DkzMJjMdtRrNGrJSNJ7FbgmQybSZ2Cqo/edit?tab=t.0

    Check out our CC Geology Extracurricular Playlist here: https://www.youtube.com/playlist?list=PL8dPuuaLjXtOmqnkvEtNVOrm0eaIjFjJ7

    ***
    Support us for $5/month on Patreon to keep Crash Course free for everyone forever! https://www.patreon.com/crashcourse
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    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:
    Mike Cumings, Jr., NassauLinda, Chuck Smith, DexcilaDou, Martin G. Diller, Johnathan Williams, Allison Wood, Katrix , Jason Terpstra, Evan Nelson, Jennifer Wiggins-Lyndall, Dalton Williams, Chelsea S, Matthew Fredericksen, AThirstyPhilosopher ., Michael Maher, Mitch Gresko, Gina Mancuso, Roger Harms, Shruti S, Quinn Harden, Reed Spilmann, Brandon Thomas, Emily Beazley, Rie Ohta, oranjeez, UwU, Elizabeth LaBelle, Leah H., David Fanska, Andrew Woods, Kevin Knupp, Barbara Pettersen, Ken Davidian, Stephen Akuffo, Toni Miles, Steve Segreto, Kyle & Katherine Callahan, Laurel Stevens, Tanner Hedrick, Kristina D Knight, Samantha, Krystle Young, Perry Joyce, Scott Harrison, Alan Bridgeman, Breanna Bosso, Matt Curls, Jennifer Killen, Duncan W Moore IV, Sarah & Nathan Catchings, team dorsey, Bernardo Garza, Trevin Beattie, Pietro Gagliardi, John Lee, Eric Koslow, Indija-ka Siriwardena, Jason Rostoker, Siobhán, Ken Penttinen, Nathan Taylor, Barrett, Les Aker, ClareG, Rizwan Kassim, Constance Urist, Alex Hackman, Triad Terrace, Katie Dean, Jason Buster, Emily T, Stephen McCandless, Thomas, Joseph Ruf, Wai Jack Sin, Ian Dundore, Erminio Di Lodovico, Evol Hong, Tandy Ratliff, Caleb Weeks, Luke Sluder
    __

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    14 min
  • How Did Religion Spread Along the Silk Road? Crash Course Geography #31

    Today we’re going to talk about the collection of routes known as the Silk Roads, and explore how worldview and other ideas spread along those trade routes. The Silk Roads are responsible for everything from the spices we use when we cook to the cloth we see as beautiful, but today we’re going to focus on religion, and show how these routes influenced the beliefs of billions of people through time and space.

    SOURCES

    General:
    Gregory, Derek, Ron Johnston, Geraldine Pratt, Michael Watts, and Sarah Whatmore, eds. 2009. The Dictionary of Human Geography. 5th ed. Willey-Blackwell. ISBN: 978-1-4051-3288-6
    Getis, Bjelland, and Getis. Introduction to Geography, 15 ed. McGraw-Hill Education. 2017. ISBN: 978-1-259-57000-1
    Hobbs, Joseph J. Fundamental of World Regional Geography, 4th ed. Cengage. 2017.
    Cracking the AP Human Geography Exam: 2020 edition.  The Princeton Review.

    SIlk Road:
    https://silkroaddigressions.com/2021/01/28/unesco-and-the-silk-road-the-role-of-japan/
    https://unescosilkroadphotocontest.org/en/node/6639
    https://www.nationalgeographic.org/encyclopedia/silk-road/
    https://en.unesco.org/silkroad/content/did-you-know-spread-buddhism-south-and-southeast-asia-through-trade-routes
    https://en.unesco.org/silkroad/sites/default/files/knowledge-bank-article/ancient_korean_art_and_central_asia.pdf
    https://en.unesco.org/silkroad/content/did-you-know-mapping-and-compilation-world-maps-along-silk-roads 
    https://en.unesco.org/silkroad/content/did-you-know-city-balkh-ancient-capital-bactria-and-centre-buddhism-and-zoroastrianism

    Maps and Cartographers:
    https://www.nationalgeographic.org/article/here-be-dragons/
    https://www.loc.gov/collections/finding-our-place-in-the-cosmos-with-carl-sagan/articles-and-essays/modeling-the-cosmos/ancient-greek-astronomy-and-cosmology
    http://www.unesco.org/new/en/unesco/prizes-medals/commemorative-medals/world-heritage-series/fez-morocco-1982/
    https://en.wikipedia.org/wiki/Geography_and_cartography_in_medieval_Islam#/media/File:TabulaRogeriana_upside-down.jpg 
    https://en.wikipedia.org/wiki/Geography_and_cartography_in_medieval_Islam
    https://muslimheritage.com/maps/
    https://mongolschinaandthesilkroad.blogspot.com/2011/02/koreas-cartographic-legacy.html
    https://en.wikipedia.org/wiki/Gangnido


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    Shannon McCone, Amelia Ryczek, Ken Davidian, Brian Zachariah, Stephen Akuffo, Toni Miles, Oscar Pinto-Reyes, Erin Nicole, Steve Segreto, Michael M. Varughese, Kyle & Katherine Callahan, Laurel A Stevens, Vincent, Michael Wang, Stacey Gillespie, Jaime Willis, Krystle Young, Michael Dowling, Alexis B, Rene Duedam, Burt Humburg, Aziz, DAVID MORTON HUDSON, Perry Joyce, Scott Harrison, Mark & Susan Billian, Junrong Eric Zhu, Alan Bridgeman, Rachel Creager, Jennifer Smith, Matt Curls, Tim Kwist, Jonathan Zbikowski, Jennifer Killen, Sarah & Nathan Catchings, Brandon Westmoreland, team dorsey, Trevin Beattie, Divonne Holmes à Court, Eric Koslow, Jennifer Dineen, Indika Siriwardena, Khaled El Shalakany, Jason Rostoker, Shawn Arnold, Siobhán, Ken Penttinen, Nathan Taylor, William McGraw, Andrei Krishkevich, ThatAmericanClare, Rizwan Kassim, Sam Ferguson, Alex Hackman, Jirat, Katie Dean, neil matatall, TheDaemonCatJr, Wai Jack Sin, Ian Dundore, Matthew, Justin, Jessica Wode, Mark, Caleb Weeks
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    17 min
  • To College or Not To College | Crash Course | How to College

    You're already learning on YouTube — why not get college credit for it? https://link.gostudyhall.com/my1

    What is college? And should you go? In our first episode of Crash Course How to College, Erica talks us through some of the reasons you may or may not want to go after that degree.

    Dr. Erica Brozovsky (from PBS's Otherwords) hosts and breaks down how to apply for, succeed at, and graduate from college. Check out our all new Study Hall Channel (linked above) where you can watch Fast Guides about college majors and even more series.

    ***
    Now you can take top-tier college courses with Study Hall! Study Hall videos are available to watch at no cost, and first-year courses are $25 to sign-up and begin coursework. Once you're satisfied with your grade, receive credit for only $400. Sign up at https://link.gostudyhall.com/my1

    Follow Study Hall on socials!
    Twitter: https://twitter.com/gostudyhall
    Instagram: https://Instagram.com/GoStudyHall
    Facebook: https://www.facebook.com/GoStudyHall
    __________________________________________________________________________
    Chapters:
    0:00 - Introduction
    1:28 - What is college? + Types of colleges
    5:42 - Why be an educated person
    8:06 - Do you want to go to college?
    __________________________________________________________________________
    Watch our videos and review your learning with the Crash Course App!
    Download here for Apple Devices: https://apple.co/3d4eyZo
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    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:
    Dave Freeman, Hasan Jamal, DL Singfield, Lisa Owen, Jeremy Mysliwiec, Amelia Ryczek, Ken Davidian, Stephen Akuffo, Toni Miles, Erin Switzer, Steve Segreto, Michael M. Varughese, Kyle & Katherine Callahan, Laurel Stevens, Vincent, Michael Wang, Stacey Gillespie (Stacey J), Alexis B, Burt Humburg, Aziz Y, Shanta, DAVID MORTON HUDSON, Perry Joyce, Scott Harrison, Mark & Susan Billian, Junrong Eric Zhu, Rachel Creager, Breanna Bosso, Matt Curls, Tim Kwist, Jonathan Zbikowski, Jennifer Killen, Sarah & Nathan Catchings, team dorsey, Trevin Beattie, Divonne Holmes à Court, Eric Koslow, Jennifer, Dineen, Indika Siriwardena, Khaled El Shalakany, Jason Rostoker, Shawn Arnold, Siobhán, Ken Penttinen, Nathan Taylor, Les Aker, ClareG, Rizwan Kassim, Alex Hackman, Jirat, Katie Dean, Avi Yashchin, NileMatotle, Wai Jack Sin, Ian Dundore, Justin, Mark, Caleb Weeks
    __

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    16 min
  • The Montgomery Bus Boycott: Crash Course Black American History #35

    For 381 days in 1955 and 1956, the Black citizens of Montgomery, Alabama boycotted the city bus system. Black riders had been mistreated on public transit all over the country for decades, and the national coverage of the Montgomery Bus Boycott intensified the public conversation about Civil Rights. By the time the Supreme Court decided that discrimination on buses was a violation of the 14th amendment, boycott leaders like Rosa Parks and Martin Luther King Jr were household names and the Civil Rights movements were on the national stage.

    Clint's book, How the Word is Passed is available now! https://bookshop.org/a/3859/9780316492935


    Sources and References
    Jo Ann Robinson, The Montgomery Bus Boycott and the Women Who Started It (Knoxville: University of Tennessee Press, 1987).
    Jeanne TheoHarris, The Rebellious Life of Mrs. Rosa Parks. (Beacon Press, 2015)
    Daina Ramey Berry and Kali Nicole Gross, A Black Women’s History of the United States (Boston: Beacon Press, 2020).
    Martin Luther King Jr., Stride Toward Freedom; the Montgomery Story. New York: Harper & Row, 1958.
    https://www.nps.gov/articles/montgomery-bus-boycott.htm


    Watch our videos and review your learning with the Crash Course App!
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    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:
    Dave Freeman, Hasan Jamal, DL Singfield, Lisa Owen, Jeremy Mysliwiec, Amelia Ryczek, Ken Davidian, Stephen Akuffo, Toni Miles, Erin Switzer, Steve Segreto, Michael M. Varughese, Kyle & Katherine Callahan, Laurel Stevens, Vincent, Michael Wang, Stacey Gillespie (Stacey J), Alexis B, Burt Humburg, Aziz Y, Shanta, DAVID MORTON HUDSON, Perry Joyce, Scott Harrison, Mark & Susan Billian, Junrong Eric Zhu, Rachel Creager, Breanna Bosso, Matt Curls, Tim Kwist, Jonathan Zbikowski, Jennifer Killen, Sarah & Nathan Catchings, team dorsey, Trevin Beattie, Divonne Holmes à Court, Eric Koslow, Jennifer, Dineen, Indika Siriwardena, Khaled El Shalakany, Jason Rostoker, Shawn Arnold, Siobhán, Ken Penttinen, Nathan Taylor, Les Aker, ClareG, Rizwan Kassim, Alex Hackman, Jirat, Katie Dean, Avi Yashchin, NileMatotle, Wai Jack Sin, Ian Dundore, Justin, Mark, Caleb Weeks
    __

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    18 min
  • How to Work in College | Crash Course | How to College

    You're already learning on YouTube — why not get college credit for it? https://link.gostudyhall.com/my1

    Working in college is necessary sometimes. Whether it's for experience, living costs, or extra money, we sometimes need to balance school, life, and work. In this episode of How to College, Erica walks through some of the ways you can find work and make sure you're balancing work with your studies and your personal life. Which are ALL important!

    ***
    Now you can take top-tier college courses with Study Hall! Study Hall videos are available to watch at no cost, and first-year courses are $25 to sign-up and begin coursework. Once you're satisfied with your grade, receive credit for only $400. Sign up at https://link.gostudyhall.com/my1

    Follow Study Hall on socials!
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    Learn more about Federal Student Aid: https://studentaid.gov/h/understand-aid

    _______________________________________________
    Chapters:
    0:00 - Introduction
    1:17 - Considering Schedules and Time Commitments
    2:44 - Considering Goals
    5:07 - Benefits of Working while in School
    7:20 - Conclusion
    _______________________________________________

    Watch our videos and review your learning with the Crash Course App!
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    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:
    Dave Freeman, Hasan Jamal, DL Singfield, Lisa Owen, Jeremy Mysliwiec, Amelia Ryczek, Ken Davidian, Stephen Akuffo, Toni Miles, Erin Switzer, Steve Segreto, Michael M. Varughese, Kyle & Katherine Callahan, Laurel Stevens, Vincent, Michael Wang, Stacey Gillespie (Stacey J), Alexis B, Burt Humburg, Aziz Y, Shanta, DAVID MORTON HUDSON, Perry Joyce, Scott Harrison, Mark & Susan Billian, Junrong Eric Zhu, Rachel Creager, Breanna Bosso, Matt Curls, Tim Kwist, Jonathan Zbikowski, Jennifer Killen, Sarah & Nathan Catchings, team dorsey, Trevin Beattie, Divonne Holmes à Court, Eric Koslow, Jennifer, Dineen, Indika Siriwardena, Khaled El Shalakany, Jason Rostoker, Shawn Arnold, Siobhán, Ken Penttinen, Nathan Taylor, Les Aker, ClareG, Rizwan Kassim, Alex Hackman, Jirat, Katie Dean, Avi Yashchin, NileMatotle, Wai Jack Sin, Ian Dundore, Justin, Mark, Caleb Weeks
    __

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    13 min
  • Humans and Energy: Crash Course World History 207

    In which Stan Muller subs for John Green and teaches you about energy and humanity. Today we discuss the ideas put forth by Alfred Crosby in his book, Children of the Sun. Historically, almost all of the energy that humans use has been directly or indirectly generated by the sun, whether that be food energy from plants, wind energy, direct solar energy, or fossil fuels. Stan looks into these different sources and talks about how humanity will continue to use energy in the future as populations grow and energy resources become more scarce.

    Reference:
    Children of the Sun by Alfred Crosby: https://bit.ly/3jIbdEU

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

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    12 min
  • Stress is Bad for Your Health: Crash Course Public Health #5

    Our identities, societies, and health are all mixed together in cool, weird, and often deeply unfair ways. One of the big factors that comes out of that mix is stress. Stress impacts our health in a number of ways. In this episode of Crash Course Public Health, we’re going to go beyond the basics and look at the ways society affects our stress, which in turn impacts our health.

    Check out our shared playlist with APHA: https://www.youtube.com/playlist?list=PLDjqc55aK3kywF2dd97_Jh5iP0d2ARhdo

    Vanessa’s channel: https://www.youtube.com/braincraft

    Sources: https://docs.google.com/document/d/1OHJiQ1njj5jWJC1YLDBzQgKC1QfnVgqJbbpK6qs7ekA/edit?usp=sharing

    Chapters:
    Introduction: Society and Your Health 00:00
    Health Literacy 2:05
    Stress 3:45
    Measuring Stress 6:26
    Adverse Childhood Experiences 7:36
    Identity and Health 8:51
    Review & Credits 11:31

    ***
    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:
    Katie, Hilary Sturges, Austin Zielman, Tori Thomas, Justin Snyder, daniel blankstein, Hasan Jamal, DL Singfield, Amelia Ryczek, Ken Davidian, Stephen Akuffo, Toni Miles, Steve Segreto, Michael M. Varughese, Kyle & Katherine Callahan, Laurel Stevens, Michael Wang, Stacey Gillespie (Stacey J), Burt Humburg, Allyson Martin, Aziz Y, Shanta, DAVID MORTON HUDSON, Perry Joyce, Scott Harrison, Mark & Susan Billian, Junrong Eric Zhu, Alan Bridgeman, Rachel Creager, Breanna Bosso, Matt Curls, Tim Kwist, Jonathan Zbikowski, Jennifer Killen, Sarah & Nathan Catchings, team dorsey, Trevin Beattie, Divonne Holmes à Court, Eric Koslow, Jennifer Dineen, Indika Siriwardena, Jason Rostoker, Shawn Arnold, Siobhán, Ken Penttinen, Nathan Taylor, Les Aker, William McGraw, ClareG, Rizwan Kassim, Constance Urist, Alex Hackman, Jirat, Pineapples of Solidarity, Katie Dean, NileMatotle, Wai Jack Sin, Ian Dundore, Justin, Mark, Caleb Weeks
    __

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    19 min

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At Crash Course, we believe that high-quality educational videos should be available to everyone for free! Subscribe for weekly videos from our current courses! The Crash Course team has produced more…