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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: 5629071 CrashCourse
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: 10286635 CrashCourse
Mansa Musa and Islam in Africa: Crash Course World History #16
 
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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: 3037026 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: 2844104 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: 4311749 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: 2839440 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: 4750211 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: 2240584 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: 1087119 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: 1543053 CrashCourse
To Sleep, Perchance to Dream - Crash Course Psychology #9
 
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Want more videos about psychology every Monday and Thursday? Check out our sister channel SciShow Psych at https://www.youtube.com/scishowpsych! 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: 1908990 CrashCourse
Buddha and Ashoka: Crash Course World History #6
 
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In which John relates a condensed history of India, post-Indus Valley Civilization. John explores Hinduism and the origins of Buddhism. He also gets into the reign of Ashoka, the Buddhist emperor who, in spite of Buddhism's structural disapproval of violence, managed to win a bunch of battles. Resources: Awesome comic book about Ashoka by Anant Pai: http://dft.ba/-ashoka He did a huge series of comics about Indian history and religion: http://dft.ba/-AnantPai India: A History by John Keay: http://dft.ba/-IndiaHistory The Bhagavad Gita: http://dft.ba/-gita The Bhagavad Gita, Upanishads, and Rig Veda, all-in-one edition: http://dft.ba/-India Credits: Executive Producer: John Green Producer: Stan Muller Writer and historian: Raoul Meyer Script Supervisor: Danica Johnson Music: Jason Weidner Thought Bubble is a product of the Smart Bubble Society: http://dft.ba/-smartbubble the Smart Bubble Society is: Suzanna Brusikiewicz Jonathon Corbiere Nick Counter Allan Levy James Tuer Adam Winnik Set Design: Donna Sink Props: Brian McCutcheon Photos: David Shankbone ClipWorks 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: 4543683 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: 3065363 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: 2481763 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: 2612278 CrashCourse
ATP & Respiration: Crash Course Biology #7
 
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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: 6241432 CrashCourse
The Nervous System, Part 1: Crash Course A&P #8
 
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•••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: 3658362 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: 1157814 CrashCourse
Meiosis: Where the Sex Starts - Crash Course Biology #13
 
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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: 3363480 CrashCourse
Presidential Powers 2: Crash Course Government and Politics #12
 
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This week Craig continues our conversation on presidential powers by looking at those NOT found in the Constitution - implied or inherent powers. We’ll talk about how the president uses his or her power to negotiate executive agreements, recommend legislative initiatives, instate executive orders, impound funds, and claim executive privilege in order to get things done. Implied powers are kind of tough to tack down, as they aren’t really powers until they’re asserted, but once the they are, most subsequent presidents chose not to give them up. So we’ll try to cover those we’ve seen so far and talk a little bit about reactions to these sometimes controversial actions from the other branches of Congress. Support is provided by Voqal: http://www.voqal.org This episode 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 Crash Course on Patreon: http://patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids
Views: 602302 CrashCourse
Hearing & Balance: Crash Course A&P #17
 
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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: 1317119 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: 3556033 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: 1461681 CrashCourse
Compatibilism: Crash Course Philosophy #25
 
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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: 751992 CrashCourse
Aliens, Time Travel, and Dresden -Slaughterhouse-Five Part I: Crash Course Literature 212
 
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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 Kurt Vonnegut's most famous novel, Slaughterhouse-Five. Vonnegut wrote the book in the Vietnam era, and it closely mirrors his personal experiences in World War II, as long as you throw out the time travel and aliens and porn stars and stuff. Slaughterhouse-Five tells the story of Billy Pilgrim, a World War II veteran who was a prisoner of war, and survived the Battle of the Bulge and the fire-bombing of Dresden, goes home after the war, and has trouble adapting to civilian life (this is the part that's like Vonnegut's own experience). Billy Pilgrim has flashbacks to the war that he interprets as being "unstuck in time." He believes he's been abducted by aliens, and pretty much loses it. You'll learn a little about Vonnegut's life, quite a bit about Dresden, and probably more than you'd like about barbershop quartets as a metaphor for post traumatic stress.
Views: 866303 CrashCourse
DNA Structure and Replication: Crash Course Biology #10
 
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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: 5760768 CrashCourse
The Chemical Mind - Crash Course Psychology #3
 
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Want more videos about psychology every Monday and Thursday? Check out our sister channel SciShow Psych at https://www.youtube.com/scishowpsych! 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: 2813011 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: 5016412 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: 973777 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: 1959464 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: 1502519 CrashCourse
Heredity: Crash Course Biology #9
 
10:18
Hank and his brother John discuss heredity via the gross example of relative ear wax moistness. 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 This video uses sounds from Freesound.org, a list of which can be found, along with the REFERENCES for this episode, in the Google document here: http://dft.ba/-2dlR tags: crashcourse, science, biology, evolution, genetics, heredity, aristotle, bloodlines, gregor mendel, mendelian genetics, mendelian trait, classical genetics, chromosome, gene, polygenic, pleiotropic, allele, ear wax gene, somatic, diploid, gametes, sperm, egg, haploid, polyploid, dominance, dominant, recessive, heterozygous, homozygous, phenotype, punnett square, reginald c. punnett, sex-linked inheritance, autosome Support CrashCourse on Subbable: http://subbable.com/crashcourse
Views: 2832460 CrashCourse
How We Make Memories - Crash Course Psychology #13
 
09:55
Want more videos about psychology every Monday and Thursday? Check out our sister channel SciShow Psych at https://www.youtube.com/scishowpsych! Remember that guy from 300? What was his name? ARG!!! It turns out our brains make and recall memories in different ways. In this episode of Crash Course Psychology, Hank talks about the way we do it, what damaging that process can do to us, and that guy... with the face and six pack... -- Table of Contents Encoding and Storing Memory 03:15:08 Implicit & Explicit Processing 04:46:03 Shallow & Deep Processing 07:27:03 Long-Term Storage 04:03:00 -- 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: 2055696 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: 670299 CrashCourse
Introduction: Crash Course U.S. Government and Politics
 
06:47
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: 2681643 CrashCourse
The French Revolution: Crash Course World History #29
 
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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: 5980011 CrashCourse
How to Train a Brain - Crash Course Psychology #11
 
11:49
Want more videos about psychology every Monday and Thursday? Check out our sister channel SciShow Psych at https://www.youtube.com/scishowpsych! I'm sure you've heard of Pavlov's Bell (and I'm not talking about the Aimee Mann song), but what was Ivan Pavlov up to, exactly? And how are our brains trained? And what is a "Skinner Box"? All those questions and more are answered in today's Crash Course Psychology, in which Hank talks about some of the aspects of learning. -- Table of Contents Associative Learning 01:33:17 Behaviorist Theory 04:32:05 Classical and Operant Conditioning 03:47:01 Positive and Negative Reinforcement 07:18:22 Reinforcement Scheduling 09:32:02 -- 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: 2243109 CrashCourse
The Election of 1860 & the Road to Disunion: Crash Course US History #18
 
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In which John Green teaches you about the election of 1860. As you may remember from last week, things were not great at this time in US history. The tensions between the North and South were rising, ultimately due to the single issue of slavery. The North wanted to abolish slavery, and the South wanted to continue on with it. It seemed like a war was inevitable, and it turns out that it was. But first the nation had to get through this election. You'll learn how the bloodshed in Kansas, and the truly awful Kansas-Nebraska Act led directly to the decrease in popularity of Stephen Douglas, the splitting of the Democratic party, and the unlikely victory of a relatively inexperienced politician from Illinois, Abraham Lincoln. Lincoln's election would lead directly to the secession of several southern states, and thus to the Civil War. John will teach you about all this, plus Dred Scott, Roger Taney, and John Brown. 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 Lincoln and Douglass debates of the 1850s fueled the argument over state's rights to decide on slavery and culminated when the two ran against one another in the Election of 1860: https://www.commonlit.org/texts/the-election-of-1860 In response to Lincoln's election, the South seceded from the Union and the Civil War began: https://www.commonlit.org/texts/the-south-secedes
Views: 1902025 CrashCourse
Don't Reanimate Corpses! Frankenstein Part 1: Crash Course Literature 205
 
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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: 1195959 CrashCourse
Saturn: Crash Course Astronomy #18
 
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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: 763866 CrashCourse
The Integumentary System, Part 1 - Skin Deep: Crash Course A&P #6
 
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•••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: 1716991 CrashCourse
DNA, Hot Pockets, & The Longest Word Ever: Crash Course Biology #11
 
14:08
Hank imagines himself breaking into the Hot Pockets factory to steal their secret recipes and instruction manuals in order to help us understand how the processes known as DNA transcription and translation allow our cells to build proteins. 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 Table of Contents: 1) Transcription 2:12 A) Transcription Unit 3:00 B) Promoter 3:10 C) TATA Box 3:32 D) RNA Polymerase 4:12 E) mRNA 4:15 F) Termination signal 5:21 G) 5' Cap & Poly-A Tail 5:34 2) RNA Splicing 6:08 A) SNuRPs & Spliceosome 6:26 B) Exons & Introns 6:56 3) Translation 7:28 A) mRNA & tRNA 8:01 B) Triplet Codons & Anticodons 8:39 4) Folding & Protein Structure 10:51 A) Primary Structure 11:11 B) Secondary Structure 11:23 C) Tertiary Structure 11:58 D) Quaternary Structure 12:44 Links to episodes referenced in the video: DNA structure episode: http://www.youtube.com/watch?v=8kK2zwjRV0M Animal cells episode: http://www.youtube.com/watch?v=cj8dDTHGJBY Fold-it SciShow episode: http://www.youtube.com/watch?v=JdBcpdH_ptA REFERENCES for this video can be found in the Google document here: http://dft.ba/-2mxX This video contains the following sounds from Freesound.org: "IMPresora.wav" by melack "swishes.wav" by pogotron tags: crashcourse, science, biology, DNA, titin, hot pocket, transcription, translation, gene, RNA, enzyme, transcription unit, adenine, thymine, cytosine, guanine, TATA box, DNA strand, mRNA, messenger RNA, RNA polymerase, uracil, termination signal, RNA splicing, SNuRPs, spliceosome, exons, introns, ribosome, tRNA, transfer RNA, amino acid, nitrogenous base, codon, anticodon, polypeptide chain, folding, helix, pleated sheets, protein biosynthesis, gene expression Support CrashCourse on Subbable: http://subbable.com/crashcourse
Views: 3513708 CrashCourse
How To Speak Chemistrian: Crash Course Chemistry #11
 
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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: 1063716 CrashCourse
The Bicameral Congress: Crash Course Government and Politics #2
 
09:05
In which Craig Benzine teaches you about the United States Congress, and why it's bicameral, and what bicameral means. Craig tells you what the Senate and House of Representatives are for, some of the history of the institutions, and reveal to you just how you can become a representative. It's not that easy. But an eagle gets punched, so there's that. 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: 1597339 CrashCourse
Eukaryopolis - The City of Animal Cells: Crash Course Biology #4
 
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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: 3325508 CrashCourse
Autonomic Nervous System: Crash Course A&P #13
 
08:49
Hank takes you on a tour of your two-part autonomic nervous system. This episode explains how your sympathetic nervous system and parasympathetic nervous system work together as foils, balancing each other out. Their key anatomical differences - where nerve fibers originate and where their ganglia are located - drive their distinct anatomical functions, making your sympathetic nervous system the "fight or flight" while your parasympathetic nervous system is for "resting and digesting." -- Table of Contents The Basic Two-Part System of the Autonomic Nervous System 0:48 Sympathetic Nervous System 2:33 Parasympathetic Nervous System 2:54 Their Nerve Fibers Originate in Different Parts of the Body 3:22 Sympathetic Ganglia Are Close to the Spinal Cord 4:36 Parasympathetic Ganglia Are Close to Their Effectors 4:59 *** Crash Course is now on Patreon! You can support us directly (and, until April 30th, have your contributions matched by Patreon!) 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, Simun Niclasen, Brad Wardell, Roger C. Rocha, Jan Schmid, Elliot Beter, Nevin Spoljaric, Sandra Aft, SR Foxley, Jessica Simmons, Stefan R. Finnerup, Jason A Saslow, Robert Kunz, Jessica Wode, Mike Drew, Steve Marshall, Anna-Ester Volozh, Christian Ludvigsen, Jeffrey Thompson, James Craver ***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. ***EPISODE CO-SPONSORS*** Link Kelly Naylor - http://www.aertenart.com Tim Webster Steven Meekel ***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: Caitlin Steinert, BryanGriffith.com, Maia McGuire, That one guy from Midland who teaches science at highschool, Michael Longwell, Justice H, Martha (splicegrrl), Casey Rule, Manuel Kovats, and @simplscientist -- 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: 1360501 CrashCourse
The Black Legend, Native Americans, and Spaniards: Crash Course US History #1
 
11:20
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: 6559175 CrashCourse
Joints: Crash Course A&P #20
 
09:23
We continue our look at your bones and skeletal system, skipping over the silly kid's song in favor of a more detailed look at your your axial and appendicular skeleton. This episode also talks about the structural and functional classifications of your joints and the major types of body movement that they facilitate. Table of Contents Basic Structure of Your Skeletal System 1:50 Axial and the Appendicular Skeleton 2:02 Structural and Functional Classifications of Joints 3:41 Major Types of Body Movement 6:02 *** 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: Everyone FROM: Martin Owens To gild refined gold is just silly -- TO: Dana FROM: Cameron Still holding out! we're gonna make it through. ***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: Stephen DeCubellis, Vanessa Benavent, Rob Palmer, Dr. John D. Trombley, BouwsT, Robin Duckworth, Kyle "Defender of Awesome" Willis, Damian Shaw, Elisa DeCastro, Johnny Young!, -- 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: 1396526 CrashCourse
Speciation: Of Ligers & Men - Crash Course Biology #15
 
10:25
Hank explains speciation - the evolutionary process by which new biological species arise - in terms of finches, ligers, mules, and dogs. Crash Course Biology is now available on DVD! http://dft.ba/-8css 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/-2DnD Table of Contents 1) Species 0:30 2) Hybrids 1:52 3) Reproductive Isolation 2:48 a) Post-Zygotic 3:31 b) Pre-Zygotic 3:51 4) Allopatric Speciation 4:23 5) Sympatric Speciation 6:03 6) Biolography 6:32 7) Dogs 8:37 This video contains the following sounds from Freesound.org: "bird tweet.aif" by tigersound "ForestBirds.wav" by HerbertBoland "morning_in_the_forest_2007_04_15.wav" by reinsamba "AMBIENT LOOP - Perfectly Clear - Wilderness Hillside - FILTERED.mp3" by Arctura "oceanwavescrushing.wav" by Luftrum biology, speciation, science, species, evolution, homo sapiens, organism, liger, napoleon dynamite, fertile, sterile, hybrid, hybridization, reproductive isolation, genetic isolation, pre-zygotic isolation, behavior, geographic, allopatric speciation, natural selection, galapagos, finch, artificial selection, corgi, greyhound, puppy, dog Support CrashCourse on Subbable: http://subbable.com/crashcourse
Views: 1063412 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: 1242366 CrashCourse

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