Why is health care so expensive? Once again, there are a lot of factors in play. Jacob and Adriene look at the many reasons that health care in the US is so expensive, and what exactly we get for all that money. Spoiler alert: countries that spend less and get better results are not that uncommon.

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In which Hank and John Green teach you about life on Earth. They won't be giving advice on how life should be lived, because this is a history series. Instead, they'll teach you about the earliest forms of life on Earth, and some of the ways that they developed into the types of life we know, love, and sometimes don't love so much (I'm looking at you here, opossums). You'll learn about prokaryotes, eukaryotes, panspermia, reproduction, a little about DNA, and even a thing or two about trees. Maybe.

Crash Course Biology
DNA Structure and Replication Episode: https://www.youtube.com/watch?v=8kK2zwjRV0M

DNA Transcription and Translation: https://www.youtube.com/watch?v=itsb2SqR-R0

Learn more at http://www.bighistoryproject.com

The Romans developed a lot of infrastructure like roads and aqueducts to both help their cities flourish and to... you know... be better at war. But the interesting thing about Roman Engineering is how it was almost all focused on Techne and not Episteme. In this episode of Crash Course History of Science, Hank takes us down the road of road building, domes, and some really cool cement.

***

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Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever:

Mark Brouwer, Glenn Elliott, Justin Zingsheim, Jessica Wode, Eric Prestemon, Kathrin Benoit, Tom Trval, Jason Saslow, Nathan Taylor, Divonne Holmes à Court, Brian Thomas Gossett, Khaled El Shalakany, Indika Siriwardena, Robert Kunz, SR Foxley, Sam Ferguson, Yasenia Cruz, Eric Koslow, Caleb Weeks, Tim Curwick, Evren Türkmenoğlu, Alexander Tamas, D.A. Noe, Shawn Arnold, mark austin, Ruth Perez, Malcolm Callis, Ken Penttinen, Advait Shinde, Cody Carpenter, Annamaria Herrera, William McGraw, Bader AlGhamdi, Vaso, Melissa Briski, Joey Quek, Andrei Krishkevich, Rachel Bright, Alex S, Mayumi Maeda, Kathy & Tim Philip, Montather, Jirat, Eric Kitchen, Moritz Schmidt, Ian Dundore, Chris Peters, Sandra Aft, Steve Marshall
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Writing research papers is an essential skill in your career as a student, and this week we’re going to help you do that like a pro. From figuring out where to begin, to finding the best systems, to breaking out of “research recursion system” (maybe just figuring out what that means), we’ve got you covered.

Crash Course is made with Adobe Creative Cloud. Get a free trial here: https://www.adobe.com/creative....cloud/catalog/deskto

Resources:

How to Write a Great Research Paper by Simon Peyton Jones: https://www.youtube.com/watch?v=g3dkRsTqdDA
How to Become a Straight-A Student by Cal Newport: https://www.goodreads.com/book..../show/253203.How_to_
Close Reading and Research: https://collegeinfogeek.com/wr....iting-close-reading-
Writing and Editing Tips: https://collegeinfogeek.com/es....say-writing-and-edit

***

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Mark Brouwer, Bob Kunz, mark austin, William McGraw, Ruth Perez, Jason A Saslow, D.A. Noe, Shawn Arnold, Eric Prestemon, Malcolm Callis, Advait Shinde, Thomas Frank, Rachel Bright, Khaled El Shalakany, Ian Dundore, Tim Curwick, Ken Penttinen, Indika Siriwardena, Alexander Tamas, Caleb Weeks, Kathrin Janßen, Nathan Taylor, Andrei Krishkevich, Brian Thomas Gossett, Chris Peters, Kathy & Tim Philip, Mayumi Maeda, Eric Kitchen, SR Foxley, Evren Türkmenoğlu, Tom Trval, Cami Wilson, Justin Zingsheim, Moritz Schmidt, Jessica Wode, Daniel Baulig, Jirat
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Hank wraps up the Crash Course on ecology by taking a look at the growing fields of conservation biology and restoration ecology, which use all the kung fu moves we've learned about in the past eleven weeks and apply them to protecting ecosystems and to cleaning up the messes that we've already made.

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Table of Contents
1) Types of Diversity 3:00
2) Conservation Biology 4:12
A) Small Population Conservation 4:26
B) Declining Population Conservation 5:50
3) Restoration Ecology 7:06
A) Structural Restoration 7:30
B) Bioremediation 7:48
C) Biological Augmentation 8:03


References and image licenses for this episode can be found in the Google document here: http://dft.ba/-3DIH Support CrashCourse on Subbable: http://subbable.com/crashcourse

Propaganda! Misinformation! Disinformation! Today we’re talking about the dark – or, shall we say, darkER – side of media. Understanding these media bogeymen is essential to being a more media literate citizen.

***

Resources:

The Persistent Mystery: How Many Died in 1989? https://www.nytimes.com/1999/0....6/04/world/the-persi

The Media Was Always Bad at Reporting Breaking News, a Brief History https://www.theatlantic.com/na....tional/archive/2013/

How To Handle Rumors: http://egap.org/content/brief-31-how-handle-rumors

The Macedonian Teens Who Mastered Fake News https://www.wired.com/2017/02/....veles-macedonia-fake

We Tracked Down A Fake-News Creator In The Suburbs. Here's What We Learned https://www.npr.org/sections/a....lltechconsidered/201

Evaluating Information: The Cornerstone of Civic Online Reasoning https://stacks.stanford.edu/fi....le/druid:fv751yt5934

Social Clicks: What and Who Gets Read on Twitter? https://hal.inria.fr/hal-01281190

59 Percent Of You Will Share This Article Without Even Reading It https://www.forbes.com/sites/j....aysondemers/2016/08/

An Exercise to Sift for Sources Amid a Blitz of Fake News https://dotearth.blogs.nytimes.....com/2016/11/24/an-e

***

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Mark Brouwer, Glenn Elliott, Justin Zingsheim, Jessica Wode, Eric Prestemon, Kathrin Benoit, Tom Trval, Jason Saslow, Nathan Taylor, Divonne Holmes à Court, Brian Thomas Gossett, Khaled El Shalakany, Indika Siriwardena, SR Foxley, Sam Ferguson, Yasenia Cruz, Eric Koslow, Caleb Weeks, Tim Curwick, Evren Türkmenoğlu, D.A. Noe, Shawn Arnold, mark austin, Ruth Perez, Malcolm Callis, Ken Penttinen, Advait Shinde, Cody Carpenter, Annamaria Herrera, William McGraw, Bader AlGhamdi, Vaso, Melissa Briski, Joey Quek, Andrei Krishkevich, Rachel Bright, Alex S, Mayumi Maeda, Kathy & Tim Philip, Montather, Jirat, Eric Kitchen, Moritz Schmidt, Ian Dundore, Chris Peters, Sandra Aft, Steve Marshall
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Want more Crash Course in person? We'll be at NerdCon: Nerdfighteria in Boston on February 25th and 26th! For more information, go to http://www.nerdconnerdfighteria.com/

In the early 1800s, Michael Faraday showed us how a changing magnetic field induces an electromotive force, or emf, resulting in an electric current. He also found that electric fields sometimes act like magnetic fields, and developed equations to calculate the forces exerted by both. In the mid-1800s, Scottish physicist James Maxwell thought something interesting was going on there, too. So he decided to assemble a set of equations that held true for all electromagnetic interactions. In this episode of Crash Course Physics, Shini talks to us about Maxwell's Equations and how important they are to our understanding of Physics.


***

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The Latest from PBS Digital Studios: https://www.youtube.com/playlist?list...

--

Produced in collaboration with PBS Digital Studios: http://youtube.com/pbsdigitalstudios

--

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Crash Course World History is now available on DVD! Visit http://store.dftba.com/product....s/crashcourse-world- to buy a set for your home or classroom.

In which John Green teaches you about capitalism and socialism in a way that is sure to please commenters from both sides of the debate. Learn how capitalism arose from the industrial revolution, and then gave rise to socialism. Learn about how we got from the British East India Company to iPhones and consumer culture in just a couple of hundred years. Stops along the way include the rise of industrial capitalism, mass production, disgruntled workers, Karl Marx, and the Socialist Beard. The socialist reactions to the ills of capitalism are covered as well, and John discusses some of the ideas of Karl Marx, and how they've been implemented or ignored in various socialist states. Plus, there are robots!

Resources:

The Relentless Revolution by Joyce Appelby: http://dft.ba/-appelby

The Marx-Engels Reader: http://dft.ba/-marxengels

Follow us!
@thecrashcourse
@realjohngreen
@raoulmeyer
@crashcoursestan
@saysdanica
@thoughtbubbler

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Today we kick off Crash Course Sociology by explaining what exactly sociology is. We’ll introduce the sociological perspective and discuss how sociology differentiates itself from the other social sciences. We’ll also explore what sociology can do, and how a concern with social problems was at the center of sociology's beginnings.

Crash Course is made with Adobe Creative Cloud. Get a free trial here: https://www.adobe.com/creativecloud.html

***

Marriage Equality Decision Day Rally photo by Elvert Barnes: https://www.flickr.com/photos/....perspective/18997209

***

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Mark, Les Aker, Robert Kunz, William McGraw, Jeffrey Thompson, Jason A Saslow, Rizwan Kassim, Eric Prestemon, Malcolm Callis, Steve Marshall, Advait Shinde, Rachel Bright, Kyle Anderson, Ian Dundore, Tim Curwick, Ken Penttinen, Caleb Weeks, Kathrin Janßen, Nathan Taylor, Yana Leonor, Andrei Krishkevich, Brian Thomas Gossett, Chris Peters, Kathy & Tim Philip, Mayumi Maeda, Eric Kitchen, SR Foxley, Justin Zingsheim, Andrea Bareis, Moritz Schmidt, Bader AlGhamdi, Jessica Wode, Daniel Baulig, Jirat

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This week, Stan Muller launches the Crash Course Intellectual Property mini-series. So, what is intellectual property, and why are we teaching it? Well, intellectual property is about ideas and their ownership, and it's basically about the rights of creators to make money from their work. Intellectual property is so pervasive in today's world, we thought you ought to know a little bit about it. We're going to discuss the three major elements of IP: Copyright, Patents, and Trademarks.

ALSO, A DISCLAIMER:
he views expressed in this video do not necessarily reflect those of the United States Copyright Office, the Library of Congress, or the United States Government.
The information in this video is distributed on "As Is" basis, without warranty. While precaution has been taken in the preparation of the video, the author shall not have any liability to any person or entity with respect to any loss or damage caused or alleged to be caused directly or indirectly by any information contained in the work.
This video is intended for educational purposes only and is not intended to be, nor should it be construed as, legal advice. Intellectual property law is notoriously fact specific, and this video (or any other single resource) cannot substitute for expert guidance from qualified legal counsel. To obtain legal guidance relevant to your particular circumstances, you should consult a qualified lawyer properly licensed in your jurisdiction. You can contact your local bar association for assistance in finding such a lawyer in your area.

The Magic 8 Ball is a registered Trademark of Mattel

Citation 1: Brand, Stewart. Quote from speech given at first Hackers' Conference, 1984
Citation 2: Plato, Phaedrus. 390 BC p. 157

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Konradical the nonradical


TO: Everyone
FROM: Bob

You CAN'T be 'Based off' of anything! BASED ON!

TO: the world
FROM: denial

Nou Ani Anquietas. Hic Qua Videum.

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Cybersecurity is a set of techniques to protect the secrecy, integrity, and availability of computer systems and data against threats. In today’s episode, we’re going to unpack these three goals and talk through some strategies we use like passwords, biometrics, and access privileges to keep our information as secure, but also as accessible as possible. From massive Denial of Service, or DDos attacks, to malware and brute force password cracking there are a lot of ways for hackers to gain access to your data, so we’ll also discuss some strategies like creating strong passwords, and using 2-factor authentication, to keep your information safe.

Check out Computerphile’s wonderful video on how to choose a password!
https://www.youtube.com/watch?v=3NjQ9b3pgIg

Pre-order our limited edition Crash Course: Computer Science Floppy Disk Coasters here!
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Produced in collaboration with PBS Digital Studios: http://youtube.com/pbsdigitalstudios

Want to know more about Carrie Anne?
https://about.me/carrieannephilbin

The Latest from PBS Digital Studios: https://www.youtube.com/playli....st?list=PL1mtdjDVOoO

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We talk a lot about Keynesian economics on this show, pretty much because the real world currently runs on Keynesian principles. That said, there are some other economic ideas out there, and today we're going to talk about a few of them. So, if you've been aching to hear about socialism, communism, the Chicago School, or the Austrian School, this episode is for you.

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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
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Should you go to film school? Great question? But there aren't necessarily a lot of direct answers. Do you want to go to Hollywood? Do you want to make movies in your spare time? Do you want to learn about world cinema? Do you want to be a director? A cinematographer? An editor? Do you want to pay for tuition? All of these questions can help you figure it out, but today Lily Gladstone will talk us through a few important things to keep in mind when deciding if film school may be right for you!

***

Produced in collaboration with PBS Digital Studios: http://youtube.com/pbsdigitalstudios

The Latest from PBS Digital Studios: https://www.youtube.com/playli....st?list=PL1mtdjDVOoO

***

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In order to understand the history of media literacy we have to go all the way back to straight up literacy. In the first half of our look at the history of media literacy, Jay takes us all the way back to Ancient Greece and forward through the printing press, newspapers, and Yellow Journalism.

***

Resources & References:

The Impact of the Printing Press http://courses.educ.ubc.ca/ete....c540/Sept04/arthurp/

Grandparents of Media Literacy https://www.grandparentsofmedi....aliteracy.com/grandp

Maine Explosion Caused by Bomb or Torpedo? https://digitalcollections.nyp....l.org/items/84ea964f

***

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 Brouwer, Justin Zingsheim, Nickie Miskell Jr., Jessica Wode, Eric Prestemon, Kathrin Benoit, Tom Trval, Jason Saslow, Nathan Taylor, Divonne Holmes à Court, Brian Thomas Gossett, Khaled El Shalakany, Indika Siriwardena, Robert Kunz, SR Foxley, Sam Ferguson, Yasenia Cruz, Daniel Baulig, Eric Koslow, Caleb Weeks, Tim Curwick, Evren Türkmenoğlu, Alexander Tamas, D.A. Noe, Shawn Arnold, mark austin, Ruth Perez, Malcolm Callis, Ken Penttinen, Advait Shinde, Cody Carpenter, Annamaria Herrera, William McGraw, Bader AlGhamdi, Vaso, Melissa Briski, Joey Quek, Andrei Krishkevich, Rachel Bright, Alex S, Mayumi Maeda, Kathy & Tim Philip, Montather, Jirat, Eric Kitchen, Moritz Schmidt, Ian Dundore, Chris Peters,, Sandra Aft, Steve Marshall
--

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Like Egypt, Sumer, and Mesoamerica, ancient China represents a hydraulic civilization—one that maintained its population by diverting rivers to aid in irrigation—and one that developed writing thousands of years ago. Today, we’re going to focus on the time of the Northern and Southern Song Dynasties, a time of great technical innovation. But, before we get to the Song, let’s take a tour through the ages and explore key elements of Chinese scientific culture.

***

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Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever:

Mark Brouwer, Glenn Elliott, Justin Zingsheim, Jessica Wode, Eric Prestemon, Kathrin Benoit, Tom Trval, Jason Saslow, Nathan Taylor, Divonne Holmes à Court, Brian Thomas Gossett, Khaled El Shalakany, Indika Siriwardena, Robert Kunz, SR Foxley, Sam Ferguson, Yasenia Cruz, Eric Koslow, Caleb Weeks, Tim Curwick, Evren Türkmenoğlu, Alexander Tamas, D.A. Noe, Shawn Arnold, mark austin, Ruth Perez, Malcolm Callis, Ken Penttinen, Advait Shinde, Cody Carpenter, Annamaria Herrera, William McGraw, Bader AlGhamdi, Vaso, Melissa Briski, Joey Quek, Andrei Krishkevich, Rachel Bright, Alex S, Mayumi Maeda, Kathy & Tim Philip, Montather, Jirat, Eric Kitchen, Moritz Schmidt, Ian Dundore, Chris Peters, Sandra Aft, Steve Marshall
--

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We’re beginning our engineering journey with a tour through the major branches. Today Shini explains the facets of civil engineering, including structural and construction engineering, city planning, transportation, and sanitation.

Crash Course Engineering is produced in association with PBS Digital Studios: https://www.youtube.com/playli....st?list=PL1mtdjDVOoO

***

RESOURCES:
https://www.engineering.com/De....signerEdge/DesignerE
https://www.britannica.com/biography/Imhotep
https://www.livescience.com/23....050-step-pyramid-djo
http://www.thecivilengg.com/History.php
https://www.britannica.com/tec....hnology/aqueduct-eng
https://www.peabody.harvard.edu/node/2151
http://www.museumofthecity.org..../project/hippodamus-
http://classics.mit.edu/Aristo....tle/politics.2.two.h
https://www.ancient.eu/Roman_Engineering/
http://www.history.com/news/th....e-secrets-of-ancient
https://www.nachi.org/history-of-concrete.htm
https://www.britannica.com/biography/John-Smeaton
http://www.history.co.uk/biogr....aphies/joseph-bazalg
https://www.schnabel-eng.com/s....ervices/dam-engineer
https://usbr.gov/lc/hooverdam/faqs/powerfaq.html

***

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 Brouwer, Glenn Elliott, Justin Zingsheim, Jessica Wode, Eric Prestemon, Kathrin Benoit, Tom Trval, Jason Saslow, Nathan Taylor, Divonne Holmes à Court, Brian Thomas Gossett, Khaled El Shalakany, Indika Siriwardena, SR Foxley, Sam Ferguson, Yasenia Cruz, Eric Koslow, Caleb Weeks, Tim Curwick, Evren Türkmenoğlu, D.A. Noe, Shawn Arnold, mark austin, Ruth Perez, Malcolm Callis, Ken Penttinen, Advait Shinde, Cody Carpenter, Annamaria Herrera, William McGraw, Bader AlGhamdi, Vaso, Melissa Briski, Joey Quek, Andrei Krishkevich, Rachel Bright, Alex S, Mayumi Maeda, Kathy & Tim Philip, Montather, Jirat, Eric Kitchen, Moritz Schmidt, Ian Dundore, Chris Peters, Sandra Aft, Steve Marshall
--

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Today we’ll cover the fourth and final of our core disciplines of engineering: chemical engineering. We’ll talk about its history and evolution going from soda ash competitions to oil refineries and renewable energies. We’ll also discuss some newer and emerging fields like biotechnology and pharmaceuticals.

NOTE: This is a re-upload to correct an error at ~2:00

Crash Course Engineering is produced in association with PBS Digital Studios: https://www.youtube.com/playli....st?list=PL1mtdjDVOoO

***

RESOURCES:
http://www.chemistryexplained.....com/Kr-Ma/Leblanc-Ni
https://www.keionline.org/book/prizes-lots-of-them
https://www.sciencehistory.org..../historical-profile/
http://www.world-petroleum.org..../edu/223-how-is-crud
https://www.thoughtco.com/hist....ory-of-gasoline-1991
https://www.britannica.com/tec....hnology/cracking-che
https://www.britannica.com/tec....hnology/petroleum-re
https://www.britannica.com/tec....hnology/chemical-eng
https://www.allaboutcareers.co....m/careers/career-pat
https://www.myklassroom.com/En....gineering-branches/2
https://www.impossiblefoods.com/burger/
https://www.eia.gov/energyexpl....ained/?page=biomass_
“Basic Principles and Calculations in Chemical Engineering” by David Mautner Himmelblau, James B. Riggs

***

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 Brouwer, Glenn Elliott, Justin Zingsheim, Jessica Wode, Eric Prestemon, Kathrin Benoit, Tom Trval, Jason Saslow, Nathan Taylor, Divonne Holmes à Court, Brian Thomas Gossett, Khaled El Shalakany, Indika Siriwardena, SR Foxley, Sam Ferguson, Yasenia Cruz, Eric Koslow, Caleb Weeks, Tim Curwick, Evren Türkmenoğlu, D.A. Noe, Shawn Arnold, Ruth Perez, Malcolm Callis, Ken Penttinen, Advait Shinde, Cody Carpenter, Annamaria Herrera, William McGraw, Bader AlGhamdi, Vaso, Melissa Briski, Joey Quek, Andrei Krishkevich, Rachel Bright, Alex S, Mayumi Maeda, Kathy & Tim Philip, Montather, Jirat, Eric Kitchen, Moritz Schmidt, Ian Dundore, Chris Peters, Sandra Aft
--

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What is culture? How do we define it and how does it change? We’ll explore different categories of culture, like low culture, high culture, and sub-cultures. We'll also revisit our founding theories to consider both a structural functionalist and a conflict theory perspective on what cultures mean for society.

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***

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Mark, Les Aker, Bob Kunz, Mark Austin, William McGraw, Jeffrey Thompson, Ruth Perez, Jason A Saslow, Eric Prestemon, Malcolm Callis, Steve Marshall, Advait Shinde, Rachel Bright, Ian Dundore, Tim Curwick, Ken Penttinen, Dominic Dos Santos, Caleb Weeks, Frantic Gonzalez, Kathrin Janßen, Nathan Taylor, Yana Leonor, Andrei Krishkevich, Brian Thomas Gossett, Chris Peters, Kathy & Tim Philip, Mayumi Maeda, Eric Kitchen, SR Foxley, Tom Trval, Andrea Bareis, Moritz Schmidt, Jessica Wode, Daniel Baulig, Jirat
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First thing’s first: what is media literacy? In our first episode, Jay breaks this question down and explains how we’re going to use it to explore our media saturated world.

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Resources & References:

U.S. Adults Consume an Entire Hour More of Media Per Day Than They Did Just Last Year http://www.adweek.com/tv-video..../us-adults-consume-e

Landmark Report: U.S. Teens Use an Average of Nine Hours of Media Per Day, Tweens Use Six Hours https://www.commonsensemedia.o....rg/about-us/news/pre

NAMLE: Media Literacy Defined https://namle.net/publications..../media-literacy-defi

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

Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever:

Mark Brouwer, Nickie Miskell Jr., Jessica Wode, Eric Prestemon, Kathrin Benoit, Tom Trval, Jason Saslow, Nathan Taylor, Divonne Holmes à Court, Brian Thomas Gossett, Khaled El Shalakany, Indika Siriwardena, Robert Kunz, SR Foxley, Sam Ferguson, Yasenia Cruz, Daniel Baulig, Eric Koslow, Caleb Weeks, Tim Curwick, Evren Türkmenoğlu, Alexander Tamas, Justin Zingsheim, D.A. Noe, Shawn Arnold, mark austin, Ruth Perez, Malcolm Callis, Ken Penttinen, Advait Shinde, Cody Carpenter, Annamaria Herrera, William McGraw, Bader AlGhamdi, Vaso, Melissa Briski, Joey Quek, Andrei Krishkevich, Rachel Bright, Alex S, Mayumi Maeda, Kathy & Tim Philip, Montather, Jirat, Eric Kitchen, Moritz Schmidt, Ian Dundore, Chris Peters, Sandra Aft, Steve Marshall
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Today we're going to introduce one of the most flexible statistical tools - the General Linear Model (or GLM). GLMs allow us to create many different models to help describe the world - you see them a lot in science, economics, and politics. Today we're going to build a hypothetical model to look at the relationship between likes and comments on a trending YouTube video using the Regression Model. We'll be introducing other popular models over the next few episodes.

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 Brouwer, Kenneth F Penttinen, Trevin Beattie, Satya Ridhima Parvathaneni, Erika & Alexa Saur, Glenn Elliott, Justin Zingsheim, Jessica Wode, Eric Prestemon, Kathrin Benoit, Tom Trval, Jason Saslow, Nathan Taylor, Brian Thomas Gossett, Khaled El Shalakany, Indika Siriwardena, SR Foxley, Sam Ferguson, Yasenia Cruz, Eric Koslow, Caleb Weeks, D.A. Noe, Shawn Arnold, Malcolm Callis, Advait Shinde, William McGraw, Andrei Krishkevich, Rachel Bright, Mayumi Maeda, Kathy & Tim Philip, Jirat, Ian Dundore
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Want to find Crash Course elsewhere on the internet?
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