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🍌 What is Geography? Crash Course Geography #1
🍌 What is Geography? Crash Course Geography #1 Teacherflix 3 Visninger • 2 flere år siden

So, what is geography? In our first episode of Crash Course Geography, we will endeavor to answer this seemingly simple question with the help of a similarly simple factoid: that the US imports more than 3 billion pounds of bananas from Guatemala each year. But as it turns out, beneath the kinds of factoids we usually associate with Geography are much grander stories that really are Geography. So let's go a little bananas as we explore the sordid history of the Chiquita banana.

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[SOURCES]

http://sethrainforestecosystem.....weebly.com/the-rain
https://www.yourarticlelibrary.....com/essay/plantatio
https://www.tripsavvy.com/moun....t-everest-facts-1458
https://time.com/3923694/mount....-everest-nepal-earth
https://sajana1231.wordpress.c....om/2011/05/02/enviro
https://adventure.howstuffwork....s.com/outdoor-activi
https://theodora.com/wfbcurren....t/guatemala/guatemal
https://en.wikipedia.org/wiki/Center_of_origin
https://www.nytimes.com/1991/0....4/19/world/cholera-k
https://www.history.com/topics..../inventions/history-
https://www.farmingindia.in/banana-cultivation/
http://new-ag.info/en/country/profile.php?a=842
https://www.worldatlas.com/art....icles/where-do-ameri
https://insteading.com/blog/gl....obal-agriculture-thr
https://fews.net/sites/default..../files/documents/rep
https://www.mapsofworld.com/la....t_long/guatemala-lat
https://www.touropia.com/volcanoes-in-guatemala/
https://www.touropia.com/touri....st-attractions-in-gu
https://www.findlatitudeandlon....gitude.com/l/Tikal%2

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

Vincent LaBarca, Bjartur Thorlacius, Scott Harrison, Alexander Thomson, 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, Yasenia Cruz, Eric Koslow, Indika Siriwardena, Khaled El Shalakany, Shawn Arnold, Siobhán, Ken Penttinen, Nathan Taylor, William McGraw, Andrei Krishkevich, Sam Ferguson, Jirat, Brian Thomas Gossett, SR Foxley, Ian Dundore, Jason A Saslow, Jessica Wode, Caleb Weeks, Mark, Patty Laqua, Stephen Saar, John Lee, Eric Prestemon
__

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Integrals: Crash Course Physics #3
Integrals: Crash Course Physics #3 Teacherflix 3 Visninger • 2 flere år siden

Continuing with last week's calculus introduction, Shini leads us through how integrals can help us figure out things like distance when we have several other essential bits of information. Say, for instance, you wanted to know how far your window was off the ground. You can figure that out by using integrals, a tennis ball, and a stopwatch! It's all here in this episode of Crash Course Physics!


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

***

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

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To The Moon & Mars - Aerospace Engineering: Crash Course Engineering #34
To The Moon & Mars - Aerospace Engineering: Crash Course Engineering #34 Teacherflix 3 Visninger • 2 flere år siden

This week we’re exploring aerospace engineering and its two main fields: aeronautical engineering and astronautical engineering. We’ll explore life & buoyancy, propulsion systems, and the challenges of managing the human body in space.

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

PBS Space Time: https://www.youtube.com/channe....l/UC7_gcs09iThXybpVg

***

RESOURCES:
https://www.history.com/topics/space-race
https://www.spacex.com/mars
https://www.princeton.edu/~asm....its/Bicycle_web/Bern
https://www.livescience.com/47....702-aerospace-engine
https://www.bls.gov/ooh/archit....ecture-and-engineeri
https://www.real-world-physics....-problems.com/hot-ai
https://www.grc.nasa.gov/www/k....-12/airplane/bgp.htm
https://www.sciencedirect.com/....science/article/pii/
https://www.nasa.gov/audience/....forstudents/5-8/feat
https://www.nasa.gov/hrp/bodyinspace
https://www.space.com/25452-ze....ro-gravity-affects-a
https://www.space.com/21353-sp....ace-radiation-mars-m
http://www.planetary.org/blogs..../guest-blogs/2018/04
https://www.nasa.gov/feature/g....oddard/the-fact-and-
https://www.space.com/16907-wh....at-is-the-temperatur
https://www.wired.com/2010/11/....1110mars-climate-obs
http://edition.cnn.com/TECH/sp....ace/9909/30/mars.met
https://www.nasa.gov/audience/....forstudents/k-4/stor
http://www.engineeringchallenges.org/8965.aspx
https://www.nasa.gov/feature/t....he-next-generation-o
http://curious.astro.cornell.e....du/about-us/150-peop
https://engineering.purdue.edu..../~propulsi/propulsio
https://www.grc.nasa.gov/www/k....-12/airplane/inlet.h


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Eric Prestemon, Sam Buck, Mark Brouwer, Naman Goel, Patrick Wiener II, Nathan Catchings, Efrain R. Pedroza, Brandon Westmoreland, dorsey, Indika Siriwardena, James Hughes, Kenneth F Penttinen, Trevin Beattie, Satya Ridhima Parvathaneni, Erika & Alexa Saur, Glenn Elliott, Justin Zingsheim, Jessica Wode, Kathrin Benoit, Tom Trval, Jason Saslow, Nathan Taylor, Brian Thomas Gossett, Khaled El Shalakany, SR Foxley, Yasenia Cruz, Eric Koslow, Caleb Weeks, Tim Curwick, D.A. Noe, Shawn Arnold, Malcolm Callis, Advait Shinde, William McGraw, Andrei Krishkevich, Rachel Bright, Jirat, Ian Dundore
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Bureaucracy Basics: Crash Course Government and Politics #15
Bureaucracy Basics: Crash Course Government and Politics #15 Teacherflix 3 Visninger • 2 flere år siden

This week Craig Benzine discusses bureaucracies. Bureaucracies tend to be associated with unintelligible rules and time-wasting procedures, but they play an important, though controversial, role in governing. From the FDA to the EPA, these agencies were established to help the government manage and carry out laws much more efficiently - to bring rule-making and enforcement closer to the experts. But the federal bureaucracy (which is part of the executive branch) has a lot of power and sometimes acts like Congress in creating regulations and like the courts through administrative adjudications. It's all a bit problematic for that whole "separation of powers" thing. So we'll talk about that too, and the arguments for and against increased federal bureaucracy.

Support is provided by Voqal:
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Chapters:
Introduction: Craig does paperwork 00:00
What is bureaucracy? 0:51
What do bureaucrats do? 1:34
Bureaucracy & division of powers 2:19
Bureaucracy & regulations 2:43
Bureaucracy & administrative adjudications 3:36
Why do we have bureaucracy? 4:15
Credits 6:25

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Globalization and Trade and Poverty: Crash Course Economics #16
Globalization and Trade and Poverty: Crash Course Economics #16 Teacherflix 3 Visninger • 2 flere år siden

What is globalization? Is globalization a good thing or not. Well, I have an answer that may not surprise you: It's complicated. This week, Jacob and Adriene will argue that globalization is, in aggregate, good. Free trade and globalization tend to provide an overall benefit, and raises average incomes across the globe. The downside is that it isn't good for every individual in the system. In some countries, manufacturing jobs move to places where labor costs are lower. And some countries that receive the influx of jobs aren't prepared to deal with it, from a regulatory standpoint. Anyway, Jacob and Adriene can explain the whole thing to you in 10 minutes.

***

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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

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Intro to Psychology: Crash Course Psychology #1
Intro to Psychology: Crash Course Psychology #1 Teacherflix 3 Visninger • 2 flere år siden

What does Psychology mean? Where does it come from? Hank gives you a 10-minute intro to one of the more tricky sciences and talks about some of the big names in the development of the field. Welcome to Crash Course Psychology!!!

Want more videos about psychology? Check out our sister channel SciShow Psych at
https://www.youtube.com/scishowpsych!

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Chapters:
Introduction: What is Psychology? 00:00
Early Thinkers in Psychology 0:46
Big Questions in Psychology 1:31
Sigmund Freud 2:21
Disciplines of Psychology 3:02
Structuralism 3:29
Functionalism 4:28
Psychoanalysis 4:58
Freud's Death & Legacy 7:01
Behaviorism 7:51
Psychodynamic Theories 8:21
Other Disciplines in Psychology 8:37
Credits 10:09

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Vectors and 2D Motion: Crash Course Physics #4
Vectors and 2D Motion: Crash Course Physics #4 Teacherflix 3 Visninger • 2 flere år siden

Continuing in our journey of understanding motion, direction, and velocity... today, Shini introduces the ideas of vectors and scalars so we can better understand how to figure out motion in 2 dimensions. But what does that have to do with baseball? Or two baseballs?


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

***
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


--

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The Ideal Gas Law: Crash Course Chemistry #12
The Ideal Gas Law: Crash Course Chemistry #12 Teacherflix 3 Visninger • 2 flere år siden

Gases are everywhere, and this is good news and bad news for chemists. The good news: when they are behaving themselves, it's extremely easy to describe their behavior theoretically, experimentally, and mathematically. The bad news is they almost never behave themselves.
In this episode of Crash Course Chemistry, Hank tells how the work of some amazing thinkers combined to produce the Ideal Gas Law, how none of those people were Robert Boyle, and how the ideal gas equation allows you to find out pressure, volume, temperature, or number of moles. You'll also get a quick introduction to a few jargon-y phrases to help you sound like you know what you're talking about.

Pssst... we made flashcards to help you review the content in this episode! Find them on the free Crash Course App!

Download it here for Apple Devices:
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Table of Contents
Ideal Gas Law Equation 0:50
Everyone But Robert Boyle 1:35
Ideal Gas Law to Figure Out Things 6:16
Jargon Fun Time 7:46

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Language Acquisition: Crash Course Linguistics #12
Language Acquisition: Crash Course Linguistics #12 Teacherflix 3 Visninger • 2 flere år siden

Babies have to learn a lot of language stuff before they can even say their first word. Exposure to language as infants doesn’t just help us say those first words but gives us the tools we need to acquire advanced language skills and learn more languages later on in life. In this episode of Crash Course Linguistics, we’ll learn about language acquisition and how the process differs for babies and adults.

Want 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/3d4eyZo
Download here for Android Devices: https://bit.ly/2SrDulJ

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:

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
__

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How Computers Calculate - the ALU: Crash Course Computer Science #5
How Computers Calculate - the ALU: Crash Course Computer Science #5 Teacherflix 3 Visninger • 2 flere år siden

Today we're going to talk about a fundamental part of all modern computers. The thing that basically everything else uses - the Arithmetic and Logic Unit (or the ALU). The ALU may not have to most exciting name, but it is the mathematical brain of a computer and is responsible for all the calculations your computer does! And it's actually not that complicated. So today we're going to use the binary and logic gates we learned in previous episodes to build one from scratch, and then we'll use our newly minted ALU when we construct the heart of a computer, the CPU, in episode 7.

*CORRECTION*

We got our wires crossed with the Intel 4004, which we discuss later. The 74181 was introduced by Texas Instruments in 1970 but appeared in technical manuals around 1969. The design of the 74181, like most of the 74xx/74xxx series, was an open design which was manufactured by many other companies - Fairchild was one such manufacturer. They produced a chip, the Fairchild 9341, which was pin-for-pin compatible with the 74181.

Fairchild was the first to prototype an ALU, building the Fairchild 4711 in 1968 - a one-off device not optimized for scale manufacturing. In 1969, Signetics came out with the 8260, which they marketed in a very limited sense (it was attached, AFAICT, to one particular computer, the Data General SUPERNOVA). TI follows afterwards (March 1970) with the 74181, coupled with the 9341 from Fairchild. The 74181 became the standard number for this part, and was available from many manufacturers (back in those days, chip makers cross-licensed designs all over the place in order to provide assurance that their part could be sourced from multiple manufacturers).

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

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

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Presidential Powers 2: Crash Course Government and Politics #12
Presidential Powers 2: Crash Course Government and Politics #12 Teacherflix 3 Visninger • 2 flere år siden

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 their 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 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:
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This episode is sponsored by Squarespace: http://www.squarespace.com/crashcourse

Chapters:
Introduction: Informal Powers of the President 00:00
Informal powers of the President 0:50
Inherent power to use troops 1:20
War Powers Resolution 2:23
Executive agreements vs. treaties 2:42
CEO of the U.S. 3:31
Legislative Initiative 4:18
Executive orders 5:20
Impounding funds 6:02
Executive privilege 6:20
The importance of presidential precedent 6:56
Credits 7:21

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Comparative Anatomy: What Makes Us Animals - Crash Course Biology #21
Comparative Anatomy: What Makes Us Animals - Crash Course Biology #21 Teacherflix 3 Visninger • 2 flere år siden

Hank introduces us to comparative anatomy, which studies the similarities and differences in animal anatomy to support the theory of evolution and the shared ancestry of living things.

References:
Campbell Biology, 9th ed.
CliffsAP Biology, 3rd ed.
Thomas Henry Huxley:
http://www.strangescience.net/huxley.htm
Tissues: http://web.jjay.cuny.edu/~acar....pi/NSC/14-anatomy.ht
Divergence time estimates for the early history of animal phyla...
http://www.ncbi.nlm.nih.gov/pm....c/articles/PMC168965

Table of Contents:
1) Comparative Anatomy 0:00
2) Locomotion 1:19
3) Heterotophy 1:41
4) Convergent Evolution 2:40
5) Biolography 3:40
6) Tissues 6:00
a) Epithelial Tissue 6:11
b) Connective Tissue 6:33
c) Muscle Tissue 7:01
d) Nerve Tissue 7:14
7) Organs 7:32
8) Organ Systems 7:39


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