848 episodes
- 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-proclamationHowever, 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-lincolnWhen 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-captainLearn more about the Civil War, Frederick Douglass, and more in Crash Course Black American History: Frederick Douglass (#17): https://www.youtube.com/watch?v=7QOTexnD-NEBlack Americans in the Civil War (#18): https://www.youtube.com/watch?v=_NgdnsjPFNEChapters: Introduction 00:00Did Lincoln Free the Slaves? 0:59How Some Slaves Freed Themselves 1:55Why Lincoln Signed the Emancipation Proclamation 2:41The Gettysburg Address 4:20The First Modern War 5:01Mystery Document 6:04Matthew Brady - Civil War Photographer 6:26A New Nation 7:01The Homestead Act, Morrill Land Grant Act, and Pacific Railway Act 8:16Financing the Civil War 8:54Post-War Industrialization 9:37Credits 10:21Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourseWant to find Crash Course elsewhere on the internet?Facebook - http://www.facebook.com/YouTubeCrashCourseTwitter - http://www.twitter.com/TheCrashCourseInstagram - https://www.instagram.com/thecrashcourse/CC Kids: http://www.youtube.com/crashcoursekids
Learn more about your ad choices. Visit megaphone.fm/adchoices - So we've been talking about civil rights for the last few episodes now, and we're finally going to wrap this discussion up with the rather controversial topic of affirmative action. We'll explain what exactly affirmative action is, who it is for, and why it still exists. Now, affirmative action is a pretty problematic concept. So we'll get into the court's rationalization for it in the 70s as well as its fall from favor in more recent years. Now, people tend to have pretty strong, and varying opinions, about this stuff - so we'll start talking about how these opinions are informed next week when we start our discussion on politics. Produced in collaboration with PBS Digital Studios: http://youtube.com/pbsdigitalstudiosSupport is provided by Voqal: http://www.voqal.orgAll attributed images are licensed under Creative Commons by Attribution 4.0https://creativecommons.org/licenses/...Want to find Crash Course elsewhere on the internet?Facebook - http://www.facebook.com/YouTubeCrashCourseTwitter - http://www.twitter.com/TheCrashCourseTumblr - http://thecrashcourse.tumblr.com Support Crash Course on Patreon: http://patreon.com/crashcourseCC Kids: http://www.youtube.com/crashcoursekids
Learn more about your ad choices. Visit megaphone.fm/adchoices Nervous and Endocrine Systems: What Really Happens When You Step on a Lego: Crash Course Biology #46
08/11/2026 | 14 mins.If cells and organs never talked to each other, an animal would fall apart faster than a boy band after the popular one goes solo. Thankfully, that’s where the nervous and endocrine systems come in! In this episode of Crash Course Biology, we’ll learn how they use neurons, hormones, and more to keep animals’ bodies coordinated.Introduction: Internal communication in animals 00:00Why communication matters 01:01The nervous system 01:58What happens when you step on a Lego? 03:48Hormones 06:19Fight or Flight 08:01Review & Credits 09:07This series was produced in collaboration with HHMI BioInteractive, committed to empowering educators and inspiring students with engaging, accessible, and quality classroom resources. Visit https://BioInteractive.org/CrashCourse for more information.Are you an educator looking for what NGSS Standards are covered in this episode? Check out our Educator Standards Database for Biology here: https://www.thecrashcourse.com/biologystandardsCheck out our Biology playlist here: https://www.youtube.com/playlist?list=PL8dPuuaLjXtPW_ofbxdHNciuLoTRLPMgB Watch this series in Spanish on our Crash Course en Español channel here: https://www.youtube.com/playlist?list=PLkcbA0DkuFjWQZzjwF6w_gUrE_5_d3vd3 Sources: https://docs.google.com/document/d/1GLDtAXE6ekg4Chk2qN3TYbNt0pJbyaHqTqRd6QY8pd4/edit?usp=sharing ***Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourseThanks to the following patrons for their generous monthly contributions that help keep Crash Course free for everyone forever:Leah H., David Fanska, Andrew Woods, DL Singfield, Ken Davidian, Stephen Akuffo, Toni Miles, Steve Segreto, Kyle & Katherine Callahan, Laurel Stevens, Burt Humburg, Perry Joyce, Scott Harrison, Mark & Susan Billian, Alan Bridgeman, Breanna Bosso, Matt Curls, Jennifer Killen, Jon Allen, Sarah & Nathan Catchings, team dorsey, Bernardo Garza, Trevin Beattie, Eric Koslow, Indija-ka Siriwardena, Jason Rostoker, Siobhán, Ken Penttinen, Nathan Taylor, Barrett & Laura Nuzum, Les Aker, William McGraw, Vaso, ClareG, Rizwan Kassim, Constance Urist, Alex Hackman, Pineapples of Solidarity, Katie Dean, Stephen McCandless, Wai Jack Sin, Ian Dundore, Caleb Weeks__Want to find Crash Course elsewhere on the internet?Instagram - https://www.instagram.com/thecrashcourse/Facebook - http://www.facebook.com/YouTubeCrashCourseTwitter - http://www.twitter.com/TheCrashCourseCC Kids: http://www.youtube.com/crashcoursekids
Learn more about your ad choices. Visit megaphone.fm/adchoices- We couldn't have language without the brain, but our brains are a bit harder to study than other parts of the body that we use to make languages like our mouths and hands. In this episode of Crash Course Linguistics, we'll learn about the field that studies where and how language happens in the brain, called psycholinguistics. We'll cover old and new research in the field, classic studies, and the methods psycholinguistics use to uncover the connections between language and the brain.Acknowledgment: Suzy StylesWant even more linguistics? Check out the Lingthusiasm podcast, hosted by the writers of Crash Course Linguistics: https://lingthusiasm.com/***Watch our videos and review your learning with the Crash Course App! Download here for Apple Devices: https://apple.co/3d4eyZoDownload here for Android Devices: https://bit.ly/2SrDulJCrash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourseThanks to the following patrons for their generous monthly contributions that help keep Crash Course free for everyone forever:Eric Prestemon, Mark, DAVID MORTON HUDSON, Perry Joyce, Isaac Liu, Scott Harrison, Mark & Susan Billian, Junrong Eric Zhu, Alan Bridgeman, Jennifer Smith, Matt Curls, Tim Kwist, Jonathan Zbikowski, Jennifer Killen, Sarah & Nathan Catchings, Brandon Westmoreland, team dorsey, Trevin Beattie, Eric Koslow, Indika Siriwardena, Khaled El Shalakany, Shawn Arnold, Siobhán, Ken Penttinen, Nathan Taylor, William McGraw, Jirat, Brian Thomas Gossett, Ian Dundore, Jason A Saslow, Jessica Wode, Caleb Weeks__Want to find Crash Course elsewhere on the internet?Facebook - http://www.facebook.com/YouTubeCrashCourseTwitter - http://www.twitter.com/TheCrashCourseTumblr - http://thecrashcourse.tumblr.com Support Crash Course on Patreon: http://patreon.com/crashcourseCC Kids: http://www.youtube.com/crashcoursekids
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At Crash Course, we believe that high-quality educational videos should be available to everyone for free! Subscribe for weekly videos from our current courses! The Crash Course team has produced more than 60 courses on a wide variety of subjects, ranging from the humanities to sciences and so much more! We also recently teamed up with Arizona State University to bring you more courses on the Study Hall channel.Links:Support us on Patreon!: http://patreon.com/crashcourseInstagram: https://www.instagram.com/crashcourseBluesky: https://bsky.app/profile/thecrashcourse.bsky.socialTikTok: https://www.tiktok.com/@crashcourseFacebook: http://www.facebook.com/YouTubeCrashCourse
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