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The Agricultural Revolution: Crash Course World History #1
 
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Crash Course World History is now available on DVD! Visit http://store.dftba.com/products/crashcourse-world-history-the-complete-series-dvd-set to buy a set for your home or classroom. You can directly support Crash Course at https://www.patreon.com/crashcourse Subscribe for as little as $0 to keep up with everything we're doing. Free is nice, but if you can afford to pay a little every month, it really helps us to continue producing this content. In which John Green investigates the dawn of human civilization. John looks into how people gave up hunting and gathering to become agriculturalists, and how that change has influenced the world we live in today. Also, there are some jokes about cheeseburgers. Additional reading: NIsa by Marjorie Shostak: https://goo.gl/hAPr5H First Farmers by Peter Bellwood: https://goo.gl/JqgHLW Follow us! @thecrashcourse @realjohngreen @raoulmeyer @crashcoursestan @saysdanica @thoughtbubbler Like us! ‪http://www.facebook.com/youtubecrashcourse Follow us again! ‪http://thecrashcourse.tumblr.com Support CrashCourse on Patreon: https://www.patreon.com/crashcourse
Views: 10046516 CrashCourse
Wait For It...The Mongols!: Crash Course World History #17
 
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Crash Course World History is now available on DVD! Visit http://store.dftba.com/products/crashcourse-world-history-the-complete-series-dvd-set to buy a set for your home or classroom. You can directly support Crash Course at http://www.patreon.com/crashcourse Subscribe for as little as $0 to keep up with everything we're doing. Free is nice, but if you can afford to pay a little every month, it really helps us to continue producing this content. Mongols T-Shirt: http://store.dftba.com/products/crashcourse-mongols-shirt In which John Green teaches you, at long last, about the most exceptional bunch of empire-building nomads in the history of the world, the Mongols! How did the Mongols go from being a relatively small band of herders who occasionally engaged in some light hunting-gathering to being one of the most formidable fighting forces in the world? It turns out Genghis Khan was a pretty big part of it, but you probably already knew that. The more interesting questions might be, what kind of rulers were they, and what effect did their empire have on the world we know today? Find out, as John FINALLY teaches you about the Mongols. Follow us! @thecrashcourse @realjohngreen @raoulmeyer @crashcoursestan @saysdanica @thoughtbubbler Like us! ‪http://www.facebook.com/youtubecrashcourse Follow us again! ‪http://thecrashcourse.tumblr.com Support CrashCourse on Patreon: http://patreon.com/crashcourse
Views: 5459214 CrashCourse
Existentialism: Crash Course Philosophy #16
 
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Now that we’ve left behind the philosophy of religion, it’s time to start exploring what other ways might exist to find meaning in the world. Today we explore essentialism and its response: existentialism. We’ll also learn about Jean-Paul Sartre and his ideas about how to find meaning in a meaningless world. Get your own Crash Course Philosophy mug from DFTBA: http://store.dftba.com/products/crashcourse-philosophy-mug The Latest from PBS Digital Studios: https://www.youtube.com/playlist?list=PL1mtdjDVOoOqJzeaJAV15Tq0tZ1vKj7ZV -- Taylor Swift drawing by Joezart: http://joezart.deviantart.com/art/Taylor-Swift-569846131 Graduate and proud parents by Christopher Brown: https://www.flickr.com/photos/xopherbrown/5621125839 All other images and video either public domain or via VideoBlocks, Unsplash, 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 Crash Course Philosophy is sponsored by Squarespace. http://www.squarespace.com/crashcourse -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashC... Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support CrashCourse on Patreon: http://www.patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids
Views: 2723195 CrashCourse
The Seven Years War and the Great Awakening: Crash Course US History #5
 
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In which John Green teaches you about the beginnings of the American Revolution in a video titled The Seven Years War. Confusing? Maybe. John argues that the Seven Years War, which is often called the French and Indian War in the US, laid a lot of the groundwork for the Revolution. More confusing? Why does this war have two names? Why were the French and Indians fighting each other? The Seven Years war was actually a global war that went on for nine years. I think I'm having trouble making this clear. Anyway, the part of this global war that happened in North America was the French and Indian War. The French and Indian tribes were the force opposing the British, so that's the name that stuck. Let's get away from this war, as it makes my head hurt. Other stuff was going on in the colonies in the 18th century that primed the people for revolution. One was the Great Awakening. Religious revival was sweeping the country, introducing new ideas about religion and how it should be practiced. At the same time thinkers like John Locke were rethinking the relationship between rulers and the ruled. So in this highly charged atmosphere, you can just imagine what would happen if the crown started trying to exert more control over the colonies. The colonists would probably just rise up, right? We'll see what happens next week. Read the Mystery Document in its entirety in the Minutes of the Provincial Province of Pennsylvania Vol. IX: http://dft.ba/-PennProvinceMinutes 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. Learn about how the European struggle for dominance throughout the French and Indian War impacted natives in North America: https://www.commonlit.org/texts/french-and-indian-war Follow us! @thecrashcourse @realjohngreen @crashcoursestan @raoulmeyer @saysdanica @thoughtbubbler Like us! http://www.facebook.com/youtubecrashcourse Look at this! thecrashcourse.tumblr.com Support CrashCourse on Patreon: https://www.patreon.com/crashcourse
Views: 2835573 CrashCourse
The Nucleus: Crash Course Chemistry #1
 
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Hank does his best to convince us that chemistry is not torture, but is instead the amazing and beautiful science of stuff. Chemistry can tell us how three tiny particles - the proton, neutron and electron - come together in trillions of combinations to form ... everything. In this inaugural episode of Crash Course Chemistry, we start out with one of the biggest ideas in chemistry ever - stuff is made from atoms. More specifically, we learn about the properties of the nucleus and why they are important to defining what an atom actually is. Like CrashCourse? http://www.facebook.com/YouTubeCrashCourse Follow CrashCourse! http://www.twitter.com/TheCrashCourse Tumbl CrashCourse. http://thecrashcourse.tumblr.com Table of Contents Einstein & Atoms 02:05 Composition of Atoms 03:18 Atomic Number 04:20 Isotopes 08:04 Relative Atomic Mass 07:26 Mass Number 07:44 Watch the SciShow episodes on the Strong Nuclear Force here: http://www.youtube.com/watch?v=Yv3EMq2Dgq8 and http://www.youtube.com/watch?v=BNDOSMqGLlg Support CrashCourse on Subbable: http://subbable.com/crashcourse
Views: 4609455 CrashCourse
Like Pale Gold - The Great Gatsby Part I: Crash Course English Literature #4
 
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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 1920's 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. Follow us! @thecrashcourse @realjohngreen @crashcoursestan @raoulmeyer @thoughtbubbler @saysdanica Like us! http://www.facebook.com/youtubecrashcourse Support CrashCourse on Patreon: https://www.patreon.com/crashcourse
Views: 2187494 CrashCourse
The Civil War Part 2: Crash Course US History #21
 
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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/usnationalarchives/collections/72157622495226723/ 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/texts/the-emancipation-proclamation However, Lincoln faced a long and difficult road before abolishing slavery, as seen in his relationship with Frederick Douglass: https://www.commonlit.org/texts/abolishing-slavery-the-efforts-of-frederick-douglass-and-abraham-lincoln When President Lincoln was assassinated, the nation grieved and pondered how it would recover from the Civil War: https://www.commonlit.org/texts/o-captain-my-captain Follow Us! @thecrashcourse @realjohngreen @crashcoursestan @raoulmeyer @saysdanica @br8ybrunch Support CrashCourse on Patreon: https://www.patreon.com/crashcourse
Views: 1689411 CrashCourse
Utilitarianism: Crash Course Philosophy #36
 
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Our next stop in our tour of the ethical lay of the land is utilitarianism. With a little help from Batman, Hank explains the principle of utility, and the difference between act and rule utilitarianism. Get your own Crash Course Philosophy mug or Chom Chom shirt from DFTBA: https://store.dftba.com/collections/crashcourse The Latest from PBS Digital Studios: https://www.youtube.com/playlist?list=PL1mtdjDVOoOqJzeaJAV15Tq0tZ1vKj7ZV -- Produced in collaboration with PBS Digital Studios: http://youtube.com/pbsdigitalstudios -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashC... Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support CrashCourse on Patreon: http://www.patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids
Views: 1429119 CrashCourse
Kant & Categorical Imperatives: Crash Course Philosophy #35
 
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Our next stop on our tour of ethics is Kant’s ethics. Today Hank explains hypothetical and categorical imperatives, the universalizability principle, autonomy, and what it means to treat people as ends-in-themselves, rather than as mere means. Get your own Crash Course Philosophy mug or Chom Chom shirt from DFTBA: https://store.dftba.com/collections/crashcourse The Latest from PBS Digital Studios: https://www.youtube.com/playlist?list=PL1mtdjDVOoOqJzeaJAV15Tq0tZ1vKj7ZV -- 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 Crash Course Philosophy is sponsored by Squarespace. http://www.squarespace.com/crashcourse -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashC... Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support CrashCourse on Patreon: http://www.patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids
Views: 980684 CrashCourse
Ancient Egypt: Crash Course World History #4
 
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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. Crash Course World History is now available on DVD! http://store.dftba.com/products/crashcourse-world-history-the-complete-series-dvd-set Resources: Mummies!: https://goo.gl/BvAdmj Pyramids!: http://goo.gl/aCov2j Follow us! @thecrashcourse @realjohngreen @raoulmeyer @crashcoursestan @saysdanica @thoughtbubbler Like us! ‪http://www.facebook.com/youtubecrashcourse Follow us again! ‪http://thecrashcourse.tumblr.com Support CrashCourse on Patreon: https://www.patreon.com/crashcourse
Views: 4892029 CrashCourse
The Nervous System, Part 2 - Action! Potential!: Crash Course A&P #9
 
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•••SUBBABLE MESSAGE••• TO: Carla FROM: Christopher Next stop is whenever. Just be like, "stop." *** You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as $0 to keep up with everything we're doing. Also, if you can afford to pay a little every month, it really helps us to continue producing great content. *** What do you and a sack of batteries have in common? Today, Hank explains. -- Table of Contents: Ion Channels Regulate Electrochemistry to Create Action Potential 4:51 Resting State 3:22 Depolarization 6:09 Repolarization 7:35 Hyperpolarization 8:00 -- CRASH COURSE KIDS! http://www.youtube.com/crashcoursekids Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support CrashCourse on Subbable: http://subbable.com/crashcourse
Views: 2848138 CrashCourse
Mitosis: Splitting Up is Complicated - Crash Course Biology #12
 
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Hank describes mitosis and cytokinesis - the series of processes our cells go through to divide into two identical copies. Crash Course Biology is now available on DVD! http://dftba.com/product/1av/CrashCourse-Biology-The-Complete-Series-DVD-Set Like CrashCourse on Facebook: http://www.facebook.com/youtubecrashcourse Follow CrashCourse on Twitter: http://www.twitter.com/thecrashcourse References for this video can be found in the Google document here: http://dft.ba/-2rVV Table of Contents 1. Mitosis 0:24 2. Interphase 3:27 a) Chromatin 3:37 b) Centrosomes 3:52 3) Prophase 4:14 a) Chromosomes 4:18 b) Chromatid 4:31 c) Microtubules 5:07 4) Metaphase 5:22 a) Motor Proteins 5:36 5) Biolography 6:13 6) Anaphase 9:00 7) Telophase 9:15 8) Cleavage 9:25 9) Cytokinesis 9:36 This video contains the following sounds from Freesound.org: "Swishes.wav" by Pogotron "Opening Scotch Whisky.mp3" by Percy Duke crashcourse, biology, mitosis, cell biology, cell division, cell, replication, splitting, chromosome, diploid cells, nucleus, DNA, prophase, metaphase, anaphase, telophase, interphase, chromatin, chromatid, centrosome duplication, centromere, microtubules, motor protein, walter flemming, tomomi kiyomitsu, dynein, cleavage, cytokinesis, daughter cells, science, education, college, university, learn, teach, hank green Support CrashCourse on Subbable: http://subbable.com/crashcourse
Views: 4088586 CrashCourse
Muscles, part 1 - Muscle Cells: Crash Course A&P #21
 
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We're kicking off our exploration of muscles with a look at the complex and important relationship between actin and myosin. Your smooth, cardiac, and skeletal muscles create movement by contracting and releasing in a process called the sliding filament model. Your skeletal muscles are constructed like a rope made of bundles of protein fibers, and that the smallest strands are your actin and myosin myofilaments. Its their use of calcium and ATP that causes the binding and unbinding that makes sarcomeres contract and relax. Table of Contents Smooth, Cardiac, and Skeletal Muscles Create Movement 1:18 Sliding Filament Model 4:52 Skeletal Muscles Are Made of Bundles of Protein Fibers 2:40 Actin and Myosin Myofilaments 3:54 Calcium and ATP Cause the Binding and Unbinding 5:05 *** 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 Marshall, Anna-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 ***SUBBABLE MESSAGES*** TO: SEM students FROM: Mrs. S You are confident and courageous! I believe in you! DFTBA! -- TO: Zachary FROM: She who gave you life! You, like the Mongols, will always be the exception. ***SUPPORTER THANK YOU!*** Thank you so much to all of our awesome supporters for their contributions to help make Crash Course possible and freely available for everyone forever: David Rybka, Beth Larter, Damian Shaw, Randy Goldberg MD, Cynthia Krohn, Allison DeVoe, Brinae Lois Gaudet, Sara Bovi, Stephen DeCubellis, Travis Bell -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support Crash Course on Patreon: http://patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids
Views: 2558561 CrashCourse
Karl Popper, Science, and Pseudoscience: Crash Course Philosophy #8
 
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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 these developments firsthand and came to draw a distinction between what he referred to as science and pseudoscience, which might best be summarized as science disconfirms, while pseudoscience confirms. While the way we describe these disciplines has changed in the intervening years, Popper’s ideas speak to the heart of how we arrive at knowledge. -- PBS Digital Studios wants to get to know you better! If you have 10 minutes to spare by filling out a survey you'll be doing us a huge favor AND have a chance to win an awesome PBS Digital Studios shirt! https://www.surveymonkey.com/r/pbsds2016 -- Wanted: Santa Clause by Kevin Dooley https://www.flickr.com/photos/pagedooley/3124443099, licensed under CC BY 2.0: https://creativecommons.org/licenses/by/2.0/ Rudolph the Red-Nosed Reindeer copyright Rankin/Bass Productions & DreamWorks Classics Other images and video 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 Crash Course Philosophy is sponsored by Squarespace. http://www.squarespace.com/crashcourse -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashC... Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support CrashCourse on Patreon: http://www.patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids
Views: 1113462 CrashCourse
Immune System, part 1: Crash Course A&P #45
 
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Our final episodes of Anatomy & Physiology explore the way your body keeps all that complex, intricate stuff alive and healthy -- your immune system. The immune system’s responses begin with physical barriers like skin and mucous membranes, and when they’re not enough, there are phagocytes -- the neutrophils and macrophages. It also features the awesomely named natural killer cells and the inflammatory response, and we'll explain how all of these elements work together to save the day if you happen to slip on a banana peel. Crash Course A&P poster: http://store.dftba.com/products/crashcourse-anatomy-and-physiology-poster Table of Contents Physical Barriers Like Skin and Mucous Membranes 2:01 Phagocytes: Neutrophils and Macrophages 3:17 Natural Killer Cells 4:29 Inflammatory Response 5:29 *** "Reformat" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ *** 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 -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support Crash Course on Patreon: http://patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids
Views: 2298514 CrashCourse
The Black Legend, Native Americans, and Spaniards: Crash Course US History #1
 
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In which John Green kicks off Crash Course US History! Why, you may ask, are we covering US History, and not more World History, or the history of some other country, or the very specific history of your home region? Well, the reasons are many. But, like it or not, the United States has probably meddled in your country to some degree in the last 236 years or so, and that means US History is relevant all over the world. In episode 1, John talks about the Native Americans who lived in what is now the US prior to European contact. This is a history class, not archaeology, so we're mainly going to cover written history. That means we start with the first sustained European settlement in North America, and that means the Spanish. The Spanish have a long history with the natives of the Americas, and not all of it was positive. The Spanish were definitely not peaceful colonizers, but what colonizers are peaceful? Colonization pretty much always results in an antagonistic relationship with the locals. John teaches you about early Spanish explorers, settlements, and what happened when they didn't get along with the indigenous people. The story of their rocky relations has been called the Black Legend. Which is not a positive legend. Turn on the captions. You'll like it! Follow us! @thecrashcourse @realjohngreen @crashcoursestan @raoulmeyer @saysdanica @thoughtbubbler Support CrashCourse on Patreon: https://www.patreon.com/crashcourse
Views: 6410868 CrashCourse
Reconstruction and 1876: Crash Course US History #22
 
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In which John Green teaches you about Reconstruction. After the divisive, destructive Civil War, Abraham Lincoln had a plan to reconcile the country and make it whole again. Then he got shot, Andrew Johnson took over, and the disagreements between Johnson and Congress ensured that Reconstruction would fail. The election of 1876 made the whole thing even more of a mess, and the country called it off, leaving the nation still very divided. John will talk about the gains made by African-Americans in the years after the Civil War, and how they lost those gains almost immediately when Reconstruction stopped. You'll learn about the Freedman's Bureau, the 14th and 15th amendments, and the disastrous election of 1876. John will explore the goals of Reconstruction, the successes and ultimate failure, and why his alma mater Kenyon College is better than Raoul's alma mater NYU. Support CrashCourse on Patreon: https://www.patreon.com/crashcourse 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.The period of Reconstruction that followed the Civil War was imperfect, and failed to create lasting change after 1876: https://www.commonlit.org/texts/reconstruction Following the end of the Civil War, many African Americans found themselves turning from slavery to sharecropping, an unfair system that would last until World War II and the Civil Rights Movement: https://www.commonlit.org/texts/from-slaves-to-sharecroppers
Views: 2413160 CrashCourse
The Heart, part 1 - Under Pressure: Crash Course A&P #25
 
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Your heart gets a lot of attention from poets, songwriters, and storytellers, but today Hank's gonna tell you how it really works. The heart’s ventricles, atria, and valves create a pump that maintains both high and low pressure to circulate blood from the heart to the body through your arteries, and bring it back to the heart through your veins. You'll also learn what your blood pressure measurements mean when we talk about systolic and diastolic blood pressure. Table of Contents Heart's Ventricles, Atria and Valves Create a Pump 3:25 Maintains Both High and Low Pressure 3:25 Blood Circulates From the Heart to the Body Through Your Arteries 4:47 Blood Circulates From the Body to the Heart Through Your Veins 4:49 Systolic and Diastolic Blood Pressure 7:58 Crash Course Psychology posters available now at DFTBA.com! http://www.dftba.com/crashcourse *** 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, Anna-Ester Volozh, Robert Kunz, Jason A Saslow, Christian Ludvigsen, Chris Peters, Brad Wardell, Beatrice Jin, Roger C. Rocha, Eric Knight, Jessica Simmons, Jeffrey Thompson, Elliot Beter, Today I Found Out, James Craver, Ian Dundore, Jessica Wode, SR Foxley, Sandra Aft, Jacob Ash, Steve Marshall ***SUBBABLE MESSAGES*** TO: My Student FROM: Earle Check out www.youtube.com/amorsciendi for supplementary content. -- TO: Everyone FROM: Magnus Krokstad Keep dreaming! ***SUPPORTER THANK YOU!*** Thank you so much to all of our awesome supporters for their contributions to help make Crash Course possible and freely available for everyone forever: Damian Shaw, Taylor Garget, Emily Barker, Librarifan, Damian Shaw, Courtney Spurgeon, juliagraph, Katherine Allen, Stephen DeCubellis, Vanessa Benavent -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support Crash Course on Patreon: http://patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids
Views: 2425529 CrashCourse
Anselm and the Argument for God: Crash Course Philosophy #9
 
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Today we are introducing a new area of philosophy – philosophy of religion. We are starting this unit off with Anselm’s argument for God’s existence, while also considering objections to that argument. -- “That’s a Neigh” David Goehring https://www.flickr.com/photos/carbonnyc/8757020626 All other images via 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 Crash Course Philosophy is sponsored by Squarespace. http://www.squarespace.com/crashcourse -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashC... Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support CrashCourse on Patreon: http://www.patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids
Views: 1398098 CrashCourse
In Da Club - Membranes & Transport: Crash Course Biology #5
 
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Hank describes how cells regulate their contents and communicate with one another via mechanisms within the cell membrane. Crash Course Biology is now available on DVD! http://dftba.com/product/1av/CrashCourse-Biology-The-Complete-Series-DVD-Set Like CrashCourse on Facebook: http://www.facebook.com/youtubecrashcourse Follow CrashCourse on Twitter: http://www.twitter.com/thecrashcourse "Concert" music used with permission from Chameleon Circuit. This video uses sounds from Freesound.org: a list of these sounds can be found in the Google document here, along with the citations for this video: http://dft.ba/-1ZRl 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 TAGS: crashcourse, hank green, biology, chemistry, cell, cell membrane, selective permeability, selectively permeable, active transport, passive transport, solution, concentration, concentration gradient, atp, adenosine tri-phosphate, jens christian skou, vesicular transport, phagocytosis, endocytosis Support CrashCourse on Subbable: http://subbable.com/crashcourse
Views: 3414817 CrashCourse
Introduction: Crash Course U.S. Government and Politics
 
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In which Craig Benzine introduces a brand new Crash Course about U.S. Government and Politics! This course will provide you with an overview of how the government of the United States is supposed to function, and we'll get into how it actually does function. The two aren't always the same thing. We'll be learning about the branches of government, politics, elections, political parties, pizza parties, and much, much more! Produced in collaboration with PBS Digital Studios: http://youtube.com/pbsdigitalstudios Support is provided by Voqal: http://www.voqal.org Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Instagram - http://instagram.com/thecrashcourse Support CrashCourse on Subbable: http://subbable.com/crashcourse
Views: 2571368 CrashCourse
The Chemical Mind - Crash Course Psychology #3
 
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You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as $0 to keep up with everything we're doing. Also, if you can afford to pay a little every month, it really helps us to continue producing great content. BAHHHHHH! Did I scare you? What exactly happens when we get scared? How does our brain make our body react? Just what are Neurotransmitters? In this episode of Crash Course Psychology, Hank takes us to the simplest part of the complex system of our brains and nervous systems; The Neuron. -- -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support CrashCourse on Subbable: http://subbable.com/crashcourse
Views: 2713536 CrashCourse
Haitian Revolutions: Crash Course World History #30
 
12:35
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 sounds 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. Crash Course World History is now available on DVD! http://store.dftba.com/products/crashcourse-world-history-the-complete-series-dvd-set Follow us! @thecrashcourse @realjohngreen @raoulmeyer @crashcoursestan @saysdanica @thoughtbubbler Like us! ‪http://www.facebook.com/youtubecrashcourse Follow us again! ‪http://thecrashcourse.tumblr.com Support Crash Course on Patreon: http://patreon.com/crashcourse
Views: 2137056 CrashCourse
Compatibilism: Crash Course Philosophy #25
 
08:55
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 deterministic world. We’ll also cover Frankfurt Cases and Patricia Churchland’s rejection of the free-or-not-free dichotomy and her focus on the amount of control we have over our actions. Get your own Crash Course Philosophy mug from DFTBA: http://store.dftba.com/products/crashcourse-philosophy-mug The Latest from PBS Digital Studios: https://www.youtube.com/playlist?list=PL1mtdjDVOoOqJzeaJAV15Tq0tZ1vKj7ZV -- Produced in collaboration with PBS Digital Studios: http://youtube.com/pbsdigitalstudios Crash Course Philosophy is sponsored by Squarespace. http://www.squarespace.com/crashcourse -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashC... Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support CrashCourse on Patreon: http://www.patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids
Views: 717858 CrashCourse
The Nervous System, Part 1: Crash Course A&P #8
 
10:36
•••SUBBABLE MESSAGE••• TO: Kerry FROM: Cale I love you with all my ha-art. Deadset. *** You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as $0 to keep up with everything we're doing. Also, if you can afford to pay a little every month, it really helps us to continue producing great content. *** Today Hank kicks off our look around MISSION CONTROL: your nervous system. -- Table of Contents: Sensory Input, Integration and Motor Output 1:36 Organization of Central and Peripheral Systems 2:16 Glial Cells 3:54 Role, Anatomy and Function of Neuron Types 5:23 Structure and Function of Neurons 6:20 -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support CrashCourse on Subbable: http://subbable.com/crashcourse
Views: 3374886 CrashCourse
Aristotle & Virtue Theory: Crash Course Philosophy #38
 
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This week we explore final ethical theory in this unit: Aristotle’s virtue theory. Hank explains the Golden Mean, and how it exists as the midpoint between vices of excess and deficiency. We’ll also discuss moral exemplars, and introduce the concept of “eudaimonia.” Get your own Crash Course Philosophy mug or Chom Chom shirt from DFTBA: https://store.dftba.com/collections/crashcourse The Latest from PBS Digital Studios: https://www.youtube.com/playlist?list=PL1mtdjDVOoOqJzeaJAV15Tq0tZ1vKj7ZV -- Produced in collaboration with PBS Digital Studios: http://youtube.com/pbsdigitalstudios Crash Course Philosophy is sponsored by Squarespace. http://www.squarespace.com/crashcourse -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashC... Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support CrashCourse on Patreon: http://www.patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids
Views: 886557 CrashCourse
To Sleep, Perchance to Dream - Crash Course Psychology #9
 
10:41
You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as $0 to keep up with everything we're doing. Also, if you can afford to pay a little every month, it really helps us to continue producing great content. Why do we sleep? Well... that's a tricky question. More easily answered is the question,"How do we sleep?" In this episode of Crash Course Psychology, Hank discusses some of the ways our brain functions when sleeping and how it can malfunction as well. -- Table of Contents Four Stages of Sleep 02:38 Why We Dream 04:28 Information Processing 08:13 Physiological Function 08:31 Cognitive Development 08:52 Neural Activity Models 09:04 -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support CrashCourse on Subbable: http://subbable.com/crashcourse
Views: 1843290 CrashCourse
ATP & Respiration: Crash Course Biology #7
 
13:26
In which Hank does some push ups for science and describes the "economy" of cellular respiration and the various processes whereby our bodies create energy in the form of ATP. Crash Course Biology is now available on DVD! http://dftba.com/product/1av/CrashCourse-Biology-The-Complete-Series-DVD-Set Like CrashCourse on Facebook: http://www.facebook.com/YouTubeCrashCourse Follow CrashCourse on Twitter: http://www.twitter.com/TheCrashCourse Special thanks go to Stafford Fitness (www.staffordfitness.net) for allowing us to shoot the gym scenes in their facilities. This video uses sounds from Freesound.org, a list of which can be found, along with the CITATIONS for this episode, in the Google Document here: http://dft.ba/-25Ad Table of Contents: 1) Cellular Respiration 01:00 2) Adenosine Triphosphate 01:29 3) Glycolysis 4:13 A) Pyruvate Molecules 5:00 B) Anaerobic Respiration/Fermentation 5:33 C) Aerobic Respiration 6:45 4) Krebs Cycle 7:06 A) Acetyl COA 7:38 B) Oxaloacetic Acid 8:21 C) Biolography: Hans Krebs 8:37 D) NAD/FAD 9:48 5) Electron Transport Chain 10:55 6) Check the Math 12:33 TAGS: crashcourse, biology, science, chemistry, energy, atp, adenosine triphosphate, cellular respiration, glucose, adp, hydrolysis, glycolysis, krebs cycle, electron transport chain, fermentation, lactic acid, enzyme, hans krebs, citric acid, ATP synthase Support CrashCourse on Subbable: http://subbable.com/crashcourse
Views: 5919223 CrashCourse
Mansa Musa and Islam in Africa: Crash Course World History #16
 
10:31
In which John Green teaches you about Sub-Saharan Africa! So, what exactly was going on there? It turns out, it was a lot of trade, converting to Islam, visits from Ibn Battuta, trade, beautiful women, trade, some impressive architecture, and several empires. John not only cover the the West African Malian Empire, which is the one Mansa Musa ruled, but he discusses the Ghana Empire, and even gets over to East Africa as well to discuss the trade-based city-states of Mogadishu, Mombasa, and Zanzibar. In addition to all this, John considers emigrating to Canada. Crash Course World History is now available on DVD! http://store.dftba.com/products/crashcourse-world-history-the-complete-series-dvd-set Follow us! @thecrashcourse @realjohngreen @raoulmeyer @crashcoursestan @saysdanica @thoughtbubbler Like us! ‪http://www.facebook.com/youtubecrashcourse Follow us again! ‪http://thecrashcourse.tumblr.com Support CrashCourse on Patreon: http://patreon.com/crashcourse
Views: 2946087 CrashCourse
How To Speak Chemistrian: Crash Course Chemistry #11
 
10:43
Learning to talk about chemistry can be like learning a foreign language, but Hank is here to help with some straightforward and simple rules to help you learn to speak Chemistrian like a native. Table of Contents Determining Formulas and Names of Monatomic Ions 2:06 Finding Cation-and Anion Forming Elements on the Periodic Table 3:29 Writing Formulas and Naming Transition Metals 4:02 Naming Acids and their Anions 5:35 Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashC... Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support CrashCourse on Subbable: http://subbable.com/crashcourse
Views: 1028089 CrashCourse
Indus Valley Civilization: Crash Course World History #2
 
09:35
In which John Green teaches you about the Indus Valley Civilization, one of the largest of the ancient civilizations. John teaches you the who, how, when, where and why of the Indus Valley Civilization, and dispenses advice on how to be more successful in your romantic relationships. Additional Resources: Empires of the Indus - https://goo.gl/NoYqkY Indus Valley on Wikipedia - https://goo.gl/9a8JUK Lots of Indus Valley Civ. photos - https://goo.gl/lo9ehY Crash Course World History is now available on DVD! http://store.dftba.com/products/crashcourse-world-history-the-complete-series-dvd-set Follow us! @thecrashcourse @realjohngreen @raoulmeyer @crashcoursestan @saysdanica @thoughtbubbler Like us! ‪http://www.facebook.com/youtubecrashcourse Follow us again! ‪http://thecrashcourse.tumblr.com Support CrashCourse on Patreon: https://www.patreon.com/crashcourse
Views: 5212898 CrashCourse
Hearing & Balance: Crash Course A&P #17
 
10:40
Crash Course A&P continues the journey through sensory systems with a look at how your sense of hearing works. We follow sounds as they work there 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. Table of Contents Choclea, Basilar Membrane, and Hair Cells Register and Transduct Sound into Action Potentials The Vestibular Apparatus Responds to Specific Motions Keep Your Equilibrium 7:36 *** 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 ***SUBBABLE MESSAGES*** TO: My Student FROM: Earle Check out www.youtube.com/amorsciendi for supplementary content. -- TO: Everyone FROM: Magnus Krokstad Keep dreaming! ***SUPPORTER THANK YOU!*** Thank you so much to all of our awesome supporters for their contributions to help make Crash Course possible and freely available for everyone forever: Belinda Pearson Caroline S. Ariela Karp and Gavi Lazan Elizabeth Gregory Amelia Gorlick Andrea Black Bill Wolf Patrick Audley Caitrin McCullough Brandi Gates -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support Crash Course on Patreon: http://patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids
Views: 1214637 CrashCourse
The French Revolution: Crash Course World History #29
 
11:54
In which John Green examines the French Revolution, and gets into how and why it differed from the American Revolution. Was it the serial authoritarian regimes? The guillotine? The Reign of Terror? All of this and more contributed to the French Revolution not being quite as revolutionary as it could have been. France endured multiple constitutions, the heads of heads of state literally rolled, and then they ended up with a megalomaniacal little emperor by the name of Napoleon. But how did all of this change the world, and how did it lead to other, more successful revolutions around the world? Watch this video and find out. Spoiler alert: Marie Antoinette never said, "Let them eat cake." Sorry. Crash Course World History is now available on DVD! http://store.dftba.com/products/crashcourse-world-history-the-complete-series-dvd-set Follow us! @thecrashcourse @realjohngreen @raoulmeyer @crashcoursestan @saysdanica @thoughtbubbler Like us! ‪http://www.facebook.com/youtubecrashcourse Follow us again! ‪http://thecrashcourse.tumblr.com Crash Course goods are available now: http://store.dftba.com/collections/crashcourse Thermidor (which is this month) is Revolutions month on Crash Course! The American Revolution: http://www.youtube.com/watch?v=HlUiSBXQHCw Coming soon: #30 - Haitian Revolution #31 - Latin American Revolutions #32 - Industrial Revolution Support Crash Course on Patreon: http://patreon.com/crashcourse
Views: 5765112 CrashCourse
Don't Reanimate Corpses! Frankenstein Part 1: Crash Course Literature 205
 
12:57
In which John Green teaches you about Mary Shelley's novel, Frankenstein. Sure, you know Frankenstein the cultural phenomenon, but how much do you know about the novel that started it all? You'll learn about the Romantic movement in English lit, of which Frankenstein is a GREAT example, and you'll learn that Frankenstein might just be the first SciFi novel. Once again, literature comes down to just what it means to be human. John will review the plot, and take you through a couple of different critical readings of the novel, and will discuss the final disposition of Percy Shelley's heart.
Views: 1153607 CrashCourse
Contractarianism: Crash Course Philosophy #37
 
09:32
Today we explore the penultimate ethical theory in this unit: contractarianism. Hank explains Hobbes’ state of nature, and implicit and explicit contracts, as well as the Prisoner’s Dilemma, and the benefits, and costs, of violating contracts. Get your own Crash Course Philosophy mug or Chom Chom shirt from DFTBA: https://store.dftba.com/collections/crashcourse The Latest from PBS Digital Studios: https://www.youtube.com/playlist?list=PL1mtdjDVOoOqJzeaJAV15Tq0tZ1vKj7ZV -- Produced in collaboration with PBS Digital Studios: http://youtube.com/pbsdigitalstudios -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashC... Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support CrashCourse on Patreon: http://www.patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids
Views: 632270 CrashCourse
Eukaryopolis - The City of Animal Cells: Crash Course Biology #4
 
11:35
Hank tells us about the city of Eukaryopolis - the animal cell that is responsible for all the cool things that happen in our bodies. Crash Course Biology is now available on DVD! http://dftba.com/product/1av/CrashCourse-Biology-The-Complete-Series-DVD-Set Like SciShow on Facebook: http://www.facebook.com/scishow Follow SciShow on Twitter: http://www.twitter.com/scishow More info. on the structures described in this video linked to in the Google Document here: http://dft.ba/-1TR_ Table of Contents time codes 1) Robert Hooke 1:59 2) Cilia/Flagella 2:52 3) Cell Membrane 3:32 4) Cytoplasm/Cytoskeleton/Centrosomes 3:58 5) Endoplasmic Reticulum 4:41 6) Ribosomes 5:45 7) Golgi Apparatus 6:00 8) Lysosomes 6:47 9) Nucleus 7:06 10) Mitochondria 9:14 TAGS: crashcourse, biology, animal cells, cell membrane, eukaryote, eukaryotic, organelle, organ, tissue, muscle, nerve, animalia, robert hooke, cilia, flagella, microtubules, cytoplasm, ctyoskeleton, centrosome, nucleus, nucleoplasm, nucleolus, endoplasmic reticulum, ribosome, amino acid, polypeptide, golgi apparatus, golgi, lysosomes, DNA, chromatin, rRNA, mRNA, mitochondria Support CrashCourse on Subbable: http://subbable.com/crashcourse
Views: 3209438 CrashCourse
The Integumentary System, Part 1 - Skin Deep: Crash Course A&P #6
 
09:40
•••SUBBABLE MESSAGE••• TO: Ciaran FROM: your sister Jillian Happy birthday! Hope you enjoy being immortalized via doobly-doo! *** You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as $0 to keep up with everything we're doing. Also, if you can afford to pay a little every month, it really helps us to continue producing great content. *** Anatomy & Physiology continues with a look at your biggest organ - your skin. -- Table of Contents: All About Skin 0:22 Epidermis, Dermis, & Hypodermis 1:30 Melanin And Keratin Cells 2:15 Ensure You Get A Good Tattoo 8:01 -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support CrashCourse on Subbable: http://subbable.com/crashcourse
Views: 1616036 CrashCourse
The Roman Empire. Or Republic. Or...Which Was It?: Crash Course World History #10
 
12:26
In which John Green explores exactly when Rome went from being the Roman Republic to the Roman Empire. Here's a hint: it had something to do with Julius Caesar, but maybe less than you think. Find out how Caesar came to rule the empire, what led to him getting stabbed 23 times on the floor of the senate, and what happened in the scramble for power after his assassination. John covers Rome's transition from city-state to dominant force in the Mediterranean in less than 12 minutes. Well, Rome's expansion took hundreds of years, he just explains it in under 12 minutes. The senate, the people, Rome, the caesarian section, the Julian calendar and our old friend Pompey all make appearances, but NOT the Caesar Salad, as Julius had nothing to do with it. Crash Course World History is now available on DVD! http://store.dftba.com/products/crashcourse-world-history-the-complete-series-dvd-set Follow us! @thecrashcourse @realjohngreen @raoulmeyer @crashcoursestan @saysdanica @thoughtbubbler Like us! ‪http://www.facebook.com/youtubecrashcourse Follow us again! ‪http://thecrashcourse.tumblr.com Support CrashCourse on Patreon: http://www.patreon.com/crashcourse
Views: 5013021 CrashCourse
Vision: Crash Course A&P #18
 
09:39
Next stop in our tour of your sensory systems? VISION. With a little help from an optical illusion, we take a look inside your eyes to try to figure out how your sense of vision works -- and how it can be tricked. *** Table of Contents The Structure of the Eye 2:31 The Fibrous, Vascular, and Inner Layers 3:33.2 The Retina 4:56 Photoreceptors, Bipolar Cells, and Ganglion Neurons 5:09.2 Rods and Cones 6:07.5 *** 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 Marshall, Anna-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 ***SUBBABLE MESSAGES*** TO: THE WORLD FROM: Future Is The Future Awesome gender neutral vintage clothing: http://futureisthefuture.com -- TO: Beth FROM: Joey I Love You Beth Ronie With All Of My Heart! ***SUPPORTER THANK YOU!*** Thank you so much to all of our awesome supporters for their contributions to help make Crash Course possible and freely available for everyone forever: Sofie Harning Sour Bags & Totes Don Phillips Christian Dodson Christian Dodson (once again) Christian Dodson (again) Christian Dodson (NO EDGE) Sour Bags & Totes tuseroni Amy Guerrero -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support Crash Course on Patreon: http://patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids
Views: 1391305 CrashCourse
The Persians & Greeks: Crash Course World History #5
 
11:39
In which John compares and contrasts Greek civilization and the Persian Empire. Of course we're glad that Greek civilization spawned modern western civilization, right? Maybe not. From Socrates and Plato to Darius and Xerxes, John explains two of the great powers of the ancient world, all WITHOUT the use of footage from 300. Resources: The Histories of Herodotus: http://goo.gl/I1TM9u Plato: http://goo.gl/GEcfWX Plays of Aristophanes: http://goo.gl/xzb9Ff Crash Course World History is now available on DVD! http://store.dftba.com/products/crashcourse-world-history-the-complete-series-dvd-set Follow us! @thecrashcourse @realjohngreen @raoulmeyer @crashcoursestan @saysdanica @thoughtbubbler Like us! ‪http://www.facebook.com/youtubecrashcourse Follow us again! ‪http://thecrashcourse.tumblr.com Support CrashCourse on Patreon: https://www.patreon.com/crashcourse
Views: 5360404 CrashCourse
Determinism vs Free Will: Crash Course Philosophy #24
 
10:26
Do we really have free will? Today Hank explores possible answers to that question, explaining theories like libertarian free will and it’s counterpoint, hard determinism. Get your own Crash Course Philosophy mug from DFTBA: http://store.dftba.com/products/crashcourse-philosophy-mug The Latest from PBS Digital Studios: https://www.youtube.com/playlist?list=PL1mtdjDVOoOqJzeaJAV15Tq0tZ1vKj7ZV -- Images via ThinkStock Produced in collaboration with PBS Digital Studios: http://youtube.com/pbsdigitalstudios Crash Course Philosophy is sponsored by Squarespace. http://www.squarespace.com/crashcourse -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashC... Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support CrashCourse on Patreon: http://www.patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids
Views: 1165297 CrashCourse
Immune System, part 2: Crash Course A&P #46
 
09:44
In the penultimate episode of Crash Course Anatomy & Physiology, Hank explains your adaptive immune system. The adaptive immune system's humoral response guards extracellular terrain against pathogens. Hank also explains B cells, antibodies, and how vaccines work. Crash Course A&P Poster: http://store.dftba.com/products/crashcourse-anatomy-and-physiology-poster Table of Contents Adaptive Immune System's Humoral Response 1:19 How B Cells Mature, Identify Antigens, and Make Antibodies 2:42 How Antibodies Warm Pathogens and Mark Them for Death 5:22 Active and Passive Humoral Immunity 6:03 How Vaccines Work 6:27 *** 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 -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support Crash Course on Patreon: http://patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids
Views: 1401634 CrashCourse
If One Finger Brought Oil - Things Fall Apart part I: Crash Course Literature 208
 
10:19
You can directly support Crash Course at https://www.patreon.com/crashcourse Subscribe for as little as $0 to keep up with everything we're doing. Free is nice, but if you can afford to pay a little every month, it really helps us to continue producing this content. In which John Green teaches you about Chinua Achebe's 1958 novel, Things Fall Apart. You'll learn about Igboland, a region in modern day Nigeria, prior to the arrival of the British Empire. Achebe tells the story of Okonkwo, an Igbo villager who has worked his way up from life as a sharecropped and become a respected leader in his community. Okonkwo has a tragic fall, and is exiled. And then the trouble starts. British missionaries arrive, and change everything. Things Fall Apart has a lot to say about colonization, and even something to say about decolonization.
Views: 830332 CrashCourse
Meiosis: Where the Sex Starts - Crash Course Biology #13
 
11:43
Hank gets down to the nitty gritty about meiosis, the special type of cell division that is necessary for sexual reproduction in eukaryotic organisms. Crash Course Biology is now available on DVD! http://dftba.com/product/1av/CrashCourse-Biology-The-Complete-Series-DVD-Set Like CrashCourse on Facebook: http://www.facebook.com/youtubecrashcourse Follow CrashCourse on Twitter: http://www.twitter.com/thecrashcourse References for this episode can be found in the Google document here: http://dft.ba/-2wDm Table of Contents 1) Homologous Chromosome Pairs 2:10 2) Primary Oocytes 3:30 3) Primary Spermatocytes 3:30 4) Meiosis 2:59 5) Interphase I 4:04 6) Prophase I 4:37 a) Crossover 5:05 b) Recombination 5:05 7) Metaphase I 7:53 8) Anaphase I 8:05 9) Telophase I 8:19 10) Prophase II 8:57 11) Metaphase II 9:23 12) Anaphase II 9:28 13) Telophase II 9:32 Want to see Hank play Assassin's Creed? Check out http://www.youtube.com/hankgames Watch the AC: Brotherhood playlist here: http://www.youtube.com/playlist?list=PL0B3CD662A033D273 Watch the AC: Revelations playlist here: http://www.youtube.com/playlist?list=PLC5C810D94ADB2080 reproduction, sexual reproduction, sex cell, sperm, egg, meiosis, crashcourse, crash course, biology, cell replication, chromosome, gene, allele, homologous chromosome, haploid cells, prophase, metaphase, anaphase, telophase, oocyte, spermatocyte, centrosome, microtubule, crossover, homologous recombination, natural selection, cytokinesis, polar body, endosperm Support CrashCourse on Subbable: http://subbable.com/crashcourse
Views: 3213736 CrashCourse
What is Philosophy?: Crash Course Philosophy #1
 
10:35
Today Hank begins to teach you about Philosophy by discussing the historical origins of philosophy in ancient Greece, and its three main divisions: metaphysics, epistemology, and value theory. He will also introduce logic, and how you’re going to use it to understand and critically evaluate a whole host of different worldviews throughout this course. And also, hopefully, the rest of your life. -- Images and video 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 Crash Course Philosophy is sponsored by Squarespace. http://www.squarespace.com/crashcourse -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support CrashCourse on Patreon: http://www.patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids
Views: 3234309 CrashCourse
Urinary System, part 1: Crash Course A&P #38
 
10:18
Even though you probably don't choose to spend a lot of time thinking about it, your pee is kind of a big deal. Today we're talking about the anatomy of your urinary system, and how your kidneys filter metabolic waste and balance salt and water concentrations in the blood. We'll cover how nephrons use glomerular filtration, tubular reabsorption, and tubular secretion to reabsorb water and nutrients back into the blood, and make urine with the leftovers. Anatomy of Hank poster: http://store.dftba.com/products/crashcourse-anatomy-and-physiology-poster Table of Contents Kidneys Filter Metabolic Waste & Balance Salt & Water Concentrations in the Blood 1:25 Nephrons 4:13 Glomerular Filtration 4:37 Tublar Reabsorption 5:14 Tubular Secretion 8:17 Urine 8:40 *** 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: Fatima Iqbal, Penelope Flagg, Eugenia Karlson, Alex S, Jirat, Tim Curwick, Christy Huddleston, Eric Kitchen, Moritz Schmidt, Today I Found Out, Avi Yashchin, Chris Peters, Eric Knight, Jacob Ash, Simun Niclasen, Jan Schmid, Elliot Beter, Sandra Aft, SR Foxley, Ian Dundore, Daniel Baulig, Jason A Saslow, Robert Kunz, Jessica Wode, Steve Marshall, Anna-Ester Volozh, Christian, Caleb Weeks, Jeffrey Thompson, James Craver, and Markus Persson -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support Crash Course on Patreon: http://patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids
Views: 1807110 CrashCourse
Lab Techniques & Safety: Crash Course Chemistry #21
 
09:03
Hank takes a break from the desk to bring you to the lab in order to demonstrate some important points about the practical side of chemistry - experimentation in the laboratory. You'll learn what to wear in the lab, how to dispose of chemicals safely, how to avoid the most common accidents, how to pour solutions properly, what the HazMat diamond means, what an MSDS is, and how to use a fume hood. And as a reward for sticking with him through this maybe less-than-thrilling lecture, you'll see Hank subject himself to an exciting piece of safety apparatus. -- Table of Contents Proper Lab Attire 0:51 Disposing Chemicals Safely 6:30 Avoiding Common Lab Accidents 5:40 Proper Pouring 5:19 Hazmat Diamond 2:26 MSDS 3:05 How to use Fume Hoods 3:38 -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashC... Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support CrashCourse on Subbable: http://subbable.com/crashcourse
Views: 1011418 CrashCourse
Saturn: Crash Course Astronomy #18
 
12:16
Saturn is the crown jewel of the solar system, beautiful and fascinating. It is a gas giant, and has a broad set of rings made of ice particles. Moons create gaps in the rings via their gravity. Saturn has dozens of moons, including Titan, which is as big as Mercury and has a thick atmosphere and lakes of methane; and Enceladus which has an undersurface ocean and eruptions of water geysers. While we are still uncertain, it is entirely possible that either or both moons may support life. This episode was brought to you by Squarespace http://www.squarespace.com -- Table of Contents Saturn is a Gas Giant 0:33 Moons Create Gaps in the Ice Rings 5:17 Dozens of Moons 6:18 Titan’s Methane Lakes 7:56 Enceladus’s Water Geysers 8:33 Life Potential 9:30 -- PBS Digital Studios: http://youtube.com/pbsdigitalstudios Follow Phil on Twitter: https://twitter.com/badastronomer Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support CrashCourse on Patreon: http://www.patreon.com/crashcourse -- PHOTOS/VIDEOS Saturn http://saturn.jpl.nasa.gov/multimedia/images/saturn/images/IMG004899.jpg [credit: NASA/JPL-Caltech/Space Science Institute/G. Ugarkovic] Interiors http://solarsystem.nasa.gov/multimedia/gallery/gas_interiors.jpg [credit: Lunar and Planetary Institute] Saturn Ring Plane Crossing http://www.spacetelescope.org/static/archives/images/large/opo9616a.jpg [credit: Erich Karkoschka (University of Arizona Lunar & Planetary Lab) and NASA/ESA] Translucent Rings http://www.jpl.nasa.gov/spaceimages/details.php?id=PIA18295 [credit: NASA/JPL-Caltech/Space Science Institute] Catching its Tail http://www.ciclops.org/view_media/34501/Catching_Its_Tail?js=1 [credit: NASA/JPL-Caltech/Space Science Institute] Enter the Vortex http://www.ciclops.org/view_media/38030/Enter_the_Vortex_In_Psychedelic_Color [credit: NASA/JPL/Space Science Institute] The Rose http://www.nasa.gov/mission_pages/cassini/multimedia/pia14944.html#.VSwz-5TF_Z0 [credit: NASA/JPL/Space Science Institute] Ice http://www.nasa.gov/images/content/205796main_PIA10081-hires.jpg [credit: NASA/JPL/University of Colorado] Saturn’s rings to scale http://www.slate.com/blogs/bad_astronomy/2014/05/02/saturn_s_rings_to_scale_thinner_than_paper.html [credit: NASA/JPL/Space Science Institute] Saturn’s Ring Plane http://en.wikipedia.org/wiki/Rings_of_Saturn#/media/File:Saturn%27s_ring_plane.jpg [credit: NASA/JPL/Space Science Institute - Cassini-Huygens/NASA] Saturn http://saturn.jpl.nasa.gov/multimedia/images/saturn/images/IMG004899.jpg [credit: NASA/JPL-Caltech/Space Science Institute/G. Ugarkovic] Shaping the Drapes (video) http://ciclops.org/view.php?id=1361&js=1 [credit: NASA/JPL/Space Science Institute] Peaks http://en.wikipedia.org/wiki/Rings_of_Saturn#/media/File:PIA11668_B_ring_peaks_2x_crop.jpg [credit: NASA / Jet Propulsion Lab / Space Science Institute] Mimas Cassini http://en.wikipedia.org/wiki/Mimas_(moon)#/media/File:Mimas_Cassini.jpg [credit: NASA / JPL-Caltech / Space Science Institute] Cassini NAC RGB https://www.flickr.com/photos/ugordan/6896462870/sizes/o/in/photostream/ [credit: NASA/JPL-Caltech/Space Science Institute/G. Ugarkovic] Titan http://en.wikipedia.org/wiki/Titan_(moon)#/media/File:Titan2005.jpg [credit: NASA/JPL/Space Science Institute] Titan’s Nile River http://www.esa.int/spaceinimages/Images/2012/11/Titan_s_Nile_River [credit: NASA/JPL–Caltech/ASI] Lakes http://photojournal.jpl.nasa.gov/figures/PIA17655_fig1.jpg [credit: NASA/JPL-Caltech/ASI/USGS] Enceladus http://www.ciclops.org/view_media/39541/Bursting-at-the-Seams [credit: NASA/JPL/Space Science Institute] Iapetus Ridge http://en.wikipedia.org/wiki/Equatorial_ridge#/media/File:Iapetus_706_1419_1.jpg [credit: NASA (Cassini probe), Matt McIrvin (image mosaic)] Hyperion http://ciclops.org/media/ir/2005/1507_3730_1.jpg [credit: NASA/JPL/Space Science Institute] Saturn eclipse mosaic http://en.wikipedia.org/wiki/Rings_of_Saturn#/media/File:PIA17172_Saturn_eclipse_mosaic_bright_crop.jpg [credit: NASA / JPL-Caltech / Space Science Institute]
Views: 741247 CrashCourse
DNA Structure and Replication: Crash Course Biology #10
 
12:59
Hank introduces us to that wondrous molecule deoxyribonucleic acid - also known as DNA - and explains how it replicates itself in our cells. Crash Course Biology is now available on DVD! http://dftba.com/product/1av/CrashCourse-Biology-The-Complete-Series-DVD-Set Like CrashCourse on Facebook: http://www.facebook.com/YouTubeCrashCourse Follow CrashCourse on Twitter: http://www.twitter.com/TheCrashCourse References for this episode can be found in the Google document here: http://dft.ba/-2hCl 1:41 link to Biological Molecules http://www.youtube.com/watch?v=H8WJ2KENlK0 Table of Contents: 1) Nucleic Acids 1:30 2) DNA -A) Polymers 1:53 -B) Three Ingredients 2:12 -C) Base Pairs 3:45 -D) Base Sequences 4:13 3) Pop Quiz 5:07 4) RNA 5:36 -A) Three Differences from DNA 5:43 5) Biolography 6:16 6) Replication 8:49 -A) Helicase and Unzipping 9:22 -B) Leading Strand 9:38 -C) DNA Polymerase 10:08 -D) RNA Primase 10:24 -E) Lagging Strand 10:46 -F) Okazaki Fragments 11:07 -F) DNA Ligase 11:47 DNA, deoxyribonucleic acid, chromosome, nucleic acid, ribonucleic acid, RNA, polymer, nucleotide, double helix, nucleotide base, base pair, base sequence, friedrich miescher, rosalind franklin, replication, helicase, leading strand, lagging strand, rna primase, dna polymerase, okazaki fragment Support CrashCourse on Subbable: http://subbable.com/crashcourse
Views: 5459764 CrashCourse
Where US Politics Came From: Crash Course US History #9
 
13:57
In which John Green teaches you where American politicians come from. In the beginning, soon after the US constitution was adopted, politics were pretty non-existent. George Washington was elected president with no opposition, everything was new and exciting, and everyone just got along. For several months. Then the contentious debate about the nature of the United States began, and it continues to this day. Washington and his lackey/handler Alexander Hamilton pursued an elitist program of federalism. They attempted to strengthen the central government, create a strong nation-state, and leave less of the governance to the states, They wanted to create debt, encourage manufacturing, and really modernize the new nation/ The opposition, creatively known as the anti-federalists, wanted to build some kind of agrarian pseudo-paradise where every (white) man could have his own farm, and live a free, self-reliant life. The founding father who epitomized this view was Thomas Jefferson. By the time Adams became president, the anti-federalists had gotten the memo about how alienating a name like anti-federalist can be. It's so much more appealing to voters if your party is for something rather than being defined by what you're against, you know? In any case, Jefferson and his acolytes changed their name to the Democratic-Republican Party, which covered a lot of bases, and proceeded to protest nearly everything Adams did. Lest you think this week is all boring politics,you'll be thrilled to hear this episode has a Whiskey Rebellion, a Quasi-War, anti-French sentiment, some controversial treaties, and something called the XYZ Affair, which sounds very exciting. Learn all about it this week with John Green. 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. Much of America's politics came from debates between democratic republican Thomas Jefferson and federalist Alexander Hamilton: https://www.commonlit.org/texts/alexander-hamilton While Jefferson would go on to become president, Hamilton heavily influenced President George Washington who set many American political ideals in his farewell address that Hamilton helped craft: https://www.commonlit.org/texts/washington-s-farewell-address Follow us! http://www.twitter.com/thecrashcourse http://www.twitter.com/realjohngreen http://www.twitter.com/crashcoursestan http://www.twitter.com/raoulmeyer http://www.twitter.com/saysdanica http://www.twitter.com/thoughtbubbler Turn on the captions. You'll like them. Support CrashCourse on Patreon: https://www.patreon.com/crashcourse
Views: 2298097 CrashCourse