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  • 10:59 Production Possibilities Frontier

    Production Possibilities Frontier

    544 views / 0 likes - added

    Tradeoffs for a hunter gatherer and the production possibilities frontier. Ceteris Paribus More free lessons at: http://www.khanacademy.org/video?v=_7VHfuWV-Qg

  • 10:16 Comparative Advantage and Absolute Advantage

    Comparative Advantage and Absolute Advantage

    614 views / 0 likes - added

    Showing that a party benefits from trade as long as there is a comparative advantage (and not necessarily an absolute advantage) More free lessons at: http://www.khanacademy.org/video?v=xN3UV5FsBkU

  • 12:24 Breakdown of Gas Prices

    Breakdown of Gas Prices

    480 views / 0 likes - added

    Where the dollars at the pump go More free lessons at: http://www.khanacademy.org/video?v=1YYy0DEOpoU

  • 07:25 Consumption Function with Income Dependent Taxes

    Consumption Function with Income Dependent Taxes

    595 views / 0 likes - added

    Thinking about a consumption function where taxes are also a function of income (which is more realistic than constant taxes) More free lessons at: http://www.khanacademy.org/video?v=wHPGFPIcILM

  • 07:17 Popular Are Southern Hemisphere Seasons More Severe?

    Are Southern Hemisphere Seasons More Severe?

    811 views / 0 likes - added

    Are Southern Hemisphere seasons more severe because of the eccentricity in Earth's orbit? More free lessons at: http://www.khanacademy.org/video?v=umvNQj-zmq4

  • 10:04 Popular Tangent Line Hyperbola Relationship (very optional)

    Tangent Line Hyperbola Relationship (very optional)

    1,206 views / 0 likes - added

    How a tangent line relates to a hyperbola. Might be useful for some competitive exams where there isn't time to derive (like we are doing in this video) More free lessons at: http://www.khanacademy.org/video?v=c_8QQbVQKU0

  • 08:00 Popular Plate Tectonics-- Difference between crust and lithosphere

    Plate Tectonics-- Difference between crust and lithosphere

    703 views / 0 likes - added

    Plate Tectonics Introduction and Difference between crust and lithosphere More free lessons at: http://www.khanacademy.org/video?v=f2BWsPVN7c4

  • 11:50 Popular Compositional and Mechanical Layers of the Earth

    Compositional and Mechanical Layers of the Earth

    838 views / 2 likes - added

    Crust, mantle, core, lithosphere, asthenosphere, mesosphere, outer core, inner core More free lessons at: http://www.khanacademy.org/video?v=hHteUIS0OFY

  • 13:03 Detectable Civilizations in our Galaxy 1

    Detectable Civilizations in our Galaxy 1

    472 views / 0 likes - added

    A framework for thinking about how many detectable civilizations are out there. More free lessons at: http://www.khanacademy.org/video?v=YYEgq1bweN4

  • 04:12 Correction Calendar Notation

    Correction Calendar Notation

    563 views / 0 likes - added

    Correcting the time difference calculation by taking into account that there is no year 0 More free lessons at: http://www.khanacademy.org/video?v=N06Jy-gQog8

  • 02:35 Popular Volume of a Sphere

    Volume of a Sphere

    759 views / 0 likes - added

    u07_l3_t1_we2 Volume of a Sphere More free lessons at: http://www.khanacademy.org/video?v=IelS2vg7JO8 Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

  • 17:27 Introduction to Heredity

    Introduction to Heredity

    452 views / 0 likes - added

    Heredity and Classical Genetics. Dominant and recessive traits. Heterozygous and homozygous genotypes. More free lessons at: http://www.khanacademy.org/video?v=eEUvRrhmcxM

  • 12:41 Taxonomy and the Tree of Life

    Taxonomy and the Tree of Life

    674 views / 0 likes - added

    The science of taxonomy and where humans fit into the tree of life More free lessons at: http://www.khanacademy.org/video?v=oHvLlS_Sc54

  • 15:04 Stoichiometry: Limiting Reagent

    Stoichiometry: Limiting Reagent

    509 views / 0 likes - added

    Stoichiometry problem where we have a limiting reagent! More free lessons at: http://www.khanacademy.org/video?v=rESzyhPOJ7I

  • 13:41 P/E Conundrum

    P/E Conundrum

    555 views / 0 likes - added

    A situation where the price to earnings ratio seems to not fairly price an asset More free lessons at: http://www.khanacademy.org/video?v=VrFbXxkl9JU

  • 13:22 Geithner Plan III

    Geithner Plan III

    501 views / 0 likes - added

    Constructing an investment where an investor gets the same upside while the program limits the downside. More free lessons at: http://www.khanacademy.org/video?v=_ka1HZS-Egc

  • 10:25 Bailout 7: Bank goes into bankruptcy

    Bailout 7: Bank goes into bankruptcy

    636 views / 0 likes - added

    What happens when there is no equity infusion and the bank goes in to bankruptcy. More free lessons at: http://www.khanacademy.org/video?v=MdIfefLcdoU

  • 08:52 Repeated roots of the characterisitic equations part 2

    Repeated roots of the characterisitic equations part 2

    523 views / 0 likes - added

    An example where we use initial conditions to solve a repeated-roots differential equation. More free lessons at: http://www.khanacademy.org/video?v=YezsgIlcb68

  • 08:10 Undetermined Coefficients 3

    Undetermined Coefficients 3

    547 views / 0 likes - added

    Another example where the nonhomogeneous part is a polynomial More free lessons at: http://www.khanacademy.org/video?v=I3vIAzMcm4Y

  • 19:12 Popular Lin Alg: Unique rowspace solution to Ax=b

    Lin Alg: Unique rowspace solution to Ax=b

    725 views / 0 likes - added

    Showing that, for any b that is in the column space of A, there is a unique member of the row space that is the "smallest" solution to Ax=b More free lessons at: http://www.khanacademy.org/video?v=czIYvs9zj2g

  • 11:16 Linear Algebra: Introduction to Orthonormal Bases

    Linear Algebra: Introduction to Orthonormal Bases

    666 views / 0 likes - added

    Looking at sets and bases that are orthonormal -- or where all the vectors have length 1 and are orthogonal to each other. More free lessons at: http://www.khanacademy.org/video?v=7BFx8pt2aTQ

  • 11:40 Popular Generalizing with Binomial Coefficients (bit advanced)

    Generalizing with Binomial Coefficients (bit advanced)

    777 views / 0 likes - added

    Conceptual understanding of where the formula for binomial coefficients come from More free lessons at: http://www.khanacademy.org/video?v=AOsWph2FNLw

  • 10:05 Work/Energy problem with Friction

    Work/Energy problem with Friction

    632 views / 0 likes - added

    A conservation of energy problem where all of the energy is not conserved. More free lessons at: http://www.khanacademy.org/video?v=YvacYWgygaA

  • 10:12 Conservation of angular momemtum

    Conservation of angular momemtum

    564 views / 0 likes - added

    Angular momentum is constant when there is no net torque. More free lessons at: http://www.khanacademy.org/video?v=s_R8d3isJDA

  • 06:47 Popular Introduction: Crash Course U.S. Government and Politics

    Introduction: Crash Course U.S. Government and Politics

    804 views / 0 likes - added

    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 functi

  • 09:05 The Bicameral Congress: Crash Course Government and Politics #2

    The Bicameral Congress: Crash Course Government and Politics #2

    700 views / 0 likes - added

    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 ho

  • 08:31 Popular Separation of Powers and Checks and Balances: Crash Course Government and Politics #3

    Separation of Powers and Checks and Balances: Crash Course Government and Politics #3

    1,689 views / 2 likes - added

    In which Craig Benzine teaches you about the US Governments Separation of powers and the system of checks and balances. In theory, the Legislative Branch, the Executive Branch, and the Judicial Brach are designed to keep each other in check, and to keep a

  • 09:15 Federalism: Crash Course Government and Politics #4

    Federalism: Crash Course Government and Politics #4

    692 views / 0 likes - added

    In which Craig Benzine teaches you about federalism, or the idea that in the United States, power is divided between the national government and the 50 state governments. Craig will teach you about how federalism has evolved over the history of the US, an

  • 08:57 Popular Constitutional Compromises: Crash Course Government and Politics #5

    Constitutional Compromises: Crash Course Government and Politics #5

    790 views / 1 likes - added

    In which Craig Benzine teaches you about the compromises met in ratifying the U.S. Constitution. The United State’s didn’t always have its current system of government. Actually, this is it’s second attempt. Craig will delve into the failures (and few suc

  • 08:58 Congressional Elections: Crash Course Government and Politics #6

    Congressional Elections: Crash Course Government and Politics #6

    668 views / 0 likes - added

    This week Craig Benzine talks about the importance of elections. But he isn’t going to focus on presidential elections, but instead those of the strongest part of our government: congressional elections. Craig will talk about the frequency of elections in

  • 08:28 Congressional Committees: Crash Course Government and Politics #7

    Congressional Committees: Crash Course Government and Politics #7

    695 views / 0 likes - added

    This week Craig Benzine clears up the role of committees in Congress. We’ll talk about standing committees, joint committees, conference committees, and caucuses (and not the candidate-choosing kinds) as well as the staff agencies that help advise these c

  • 08:12 Congressional Leadership: Crash Course Government and Politics #8

    Congressional Leadership: Crash Course Government and Politics #8

    647 views / 0 likes - added

    This week Craig Benzine explores the leadership structure of congress. We’ll break out the clone machine to examine the responsibilities of the speaker of the house, the majority and minority leaders as well as the majority and minority whips in both the

  • 07:01 Popular How a Bill Becomes a Law: Crash Course Government and Politics #9

    How a Bill Becomes a Law: Crash Course Government and Politics #9

    791 views / 1 likes - added

    Oh my, Craig has his work cut out for him this week. The process of how a bill becomes a law can be pretty complex, fraught with potential bill-death at every corner. As if just getting through committee isn’t difficult enough, bills have to navigate a se

  • 06:36 Congressional Decisions: Crash Course Government and Politics #10

    Congressional Decisions: Crash Course Government and Politics #10

    631 views / 0 likes - added

    This week Craig breaks out the crystal ball to try and figure out why our congresspeople do the things that they do. We’ll talk about the three motivating factors of congressional decisions - constituency, interest groups, and political parties - and we’l

  • 06:30 Popular Presidential Power: Crash Course Government and Politics #11

    Presidential Power: Crash Course Government and Politics #11

    737 views / 0 likes - added

    This week Craig looks at the expressed powers of the President of the United States - that is the ones you can find in the Constitution. From appointing judges and granting pardons, to vetoing laws and acting as the nation’s chief diplomat on foreign poli

  • 12:12 Popular Introduction to Astronomy: Crash Course Astronomy #1

    Introduction to Astronomy: Crash Course Astronomy #1

    719 views / 3 likes - added

    Welcome to the first episode of Crash Course Astronomy. Your host for this intergalactic adventure is the Bad Astronomer himself, Phil Plait. We begin with answering a question: "What is astronomy?" -- Table of Contents: What is Astronomy? 3:00 Who Studie

  • 11:17 Naked Eye Observations: Crash Course Astronomy #2

    Naked Eye Observations: Crash Course Astronomy #2

    666 views / 0 likes - added

    Today on Crash Course Astronomy, Phil invites you to head outside and take a look at all the incredible things you can see with your naked eye. -- Table of Contents: Naked Eye Observations 0:28.4 Constellations 3:09.7 The Color of Stars 2:44.5 View of the

  • 09:29 Cycles in the Sky: Crash Course Astronomy #3

    Cycles in the Sky: Crash Course Astronomy #3

    627 views / 0 likes - added

    This week we build on our naked eye observations from last week and take a look at the cyclical phenomena that we can see at work in the universe. -- Table of Contents: Naked Eye Observations 0:28.4 Constellations 3:09.7 The Color of Stars 2:44.5 View of

  • 09:46 Popular Moon Phases: Crash Course Astronomy #4

    Moon Phases: Crash Course Astronomy #4

    1,954 views / 6 likes - added

    In this episode of Crash Course Astronomy, Phil takes you through the cause and name of the Moon's phases. -- Why the Moon Has Phases 0:36.1 Spheres in Orbit 1:05.4 Name of the Moon Phases 2:25.5 How We See It 7:48.2 -- PBS Digital Studios: http://youtube

  • 10:32 Popular Eclipses: Crash Course Astronomy #5

    Eclipses: Crash Course Astronomy #5

    833 views / 0 likes - added

    The big question in the comments last week was, "BUT WHAT ABOUT ECLIPSES?" Today, Phil breaks 'em down for you. This episode is sponsored by Squarespace: http://www.squarespace.com/crashcourse -- As promised, Phil's sun spotting recommendations: Astronome

  • 12:01 Telescopes: Crash Course Astronomy #6

    Telescopes: Crash Course Astronomy #6

    668 views / 0 likes - added

    Today Phil explains how telescopes work and offers up some astronomical shopping advice. -- How Telescopes Work 1:07 Refractors vs Reflectors 2:50 Technology and the Light Spectrum 7:45 -- PBS Digital Studios: http://youtube.com/pbsdigitalstudios Follow P

  • 10:03 Popular The Gravity of the Situation: Crash Course Astronomy #7

    The Gravity of the Situation: Crash Course Astronomy #7

    761 views / 0 likes - added

    In today's episode, Phil looks at how gravity plays out across the universe. This episode is sponsored by Squarespace: http://www.squarespace.com/crashcourse -- Gravity is a Force 2:17 Different Types of Orbit 3:41 Escape Velocity 5:30 Weightless Mass 7:0

  • 09:47 Popular Tides: Crash Course Astronomy #8

    Tides: Crash Course Astronomy #8

    1,087 views / 1 likes - added

    Today Phil explores the world of tides! What is the relationship between tides and gravity? How do planets and their moons become tidally locked? What would happen if you were 300km tall? Important questions. -- Gravity Over Distance 0:44 Tidal Force Para

  • 10:17 Popular Introduction to the Solar System: Crash Course Astronomy #9

    Introduction to the Solar System: Crash Course Astronomy #9

    979 views / 1 likes - added

    In today's Crash Course Astronomy, Phil takes a look at the explosive history of our cosmic backyard. We explore how we went from a giant ball of gas to the system of planets and other celestial objects we have today. This episode is sponsored by Squaresp

  • 12:04 Popular The Sun: Crash Course Astronomy #10

    The Sun: Crash Course Astronomy #10

    797 views / 2 likes - added

    Phil takes us for a closer (eye safe!) look at the two-octillion ton star that rules our solar system. We look at the sun's core, plasma, magnetic fields, sunspots, solar flares, coronal mass ejections, and what all of that means for our planet. This epis

  • 10:14 Popular The Earth: Crash Course Astronomy #11

    The Earth: Crash Course Astronomy #11

    880 views / 0 likes - added

    Phil starts the planet-by-planet tour of the solar system right here at home, Earth. -- Table of Contents Earth is a Planet 0:03 Layers of Earth 1:25 The Magnetic Field 5:10 Atmosphere and the Human Influence 6:14 -- PBS Digital Studios: http://youtube.co

  • 09:51 Popular The Moon: Astronomy #12

    The Moon: Astronomy #12

    957 views / 1 likes - added

    Join Phil for a tour of our capital-M Moon, from surface features, inside to the core, and back in time to theories about its formation. This episode is brought to you by Squarespace: http://www.squarespace.com/crashcourse -- Table of Contents Many Millio

  • 11:21 Popular Introduction to Anatomy&Physiology: Crash Course A&P #1

    Introduction to Anatomy&Physiology: Crash Course A&P #1

    849 views / 0 likes - added

    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.

  • 10:43 Popular Tissues, Part 1: Crash Course A&P #2

    Tissues, Part 1: Crash Course A&P #2

    888 views / 0 likes - added

    •••SUBBABLE MESSAGE••• TO: Jordan Schoonover FROM: Mom, Dad&Madison Happy Birthday Jordan! We love you sweetheart!! *** You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as $0 to keep up with everything w

  • 10:16 Popular Tissues, Part 2 - Epithelial Tissue: Crash Course A&P #3

    Tissues, Part 2 - Epithelial Tissue: Crash Course A&P #3

    1,541 views / 0 likes - added

    •••SUBBABLE MESSAGE••• TO : Phoebe and James McMullan FROM : Dad Continue being awesome Phoebe&James from John&Hank! *** You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as $0 to keep up with everything

  • 10:29 Popular Tissues, Part 3 - Connective Tissues: Crash Course A&P #4

    Tissues, Part 3 - Connective Tissues: Crash Course A&P #4

    1,136 views / 0 likes - added

    •••SUBBABLE MESSAGE••• TO: Ashley FROM: Fee Happy birthday nerd also I love you lots and lots *** 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 y

  • 09:43 Popular Tissues, Part 4 - Types of Connective Tissues: Crash Course A&P #5

    Tissues, Part 4 - Types of Connective Tissues: Crash Course A&P #5

    1,604 views / 0 likes - added

    •••SUBBABLE MESSAGE••• TO: the world. FROM: Laura Love Rathbun Learning is the best thing to do with your you! *** 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

  • 09:40 Popular The Integumentary System, Part 1 - Skin Deep: Crash Course A&P #6

    The Integumentary System, Part 1 - Skin Deep: Crash Course A&P #6

    858 views / 0 likes - added

    •••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 ev

  • 09:57 Popular The Integumentary System, Part 2 - Skin Deeper: Crash Course A&P #7

    The Integumentary System, Part 2 - Skin Deeper: Crash Course A&P #7

    752 views / 0 likes - added

    •••SUBBABLE MESSAGE••• TO: Helle Søndergaard FROM: Martin Søndergaard Congratulations for finishing first semester on physiotherapy! I'm so proud! *** You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as

  • 10:36 Popular The Nervous System, Part 1: Crash Course A&P #8

    The Nervous System, Part 1: Crash Course A&P #8

    1,172 views / 1 likes - added

    •••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 aff

  • 11:44 Popular The Nervous System, Part 2 - Action! Potential!: Crash Course A&P #9

    The Nervous System, Part 2 - Action! Potential!: Crash Course A&P #9

    1,146 views / 0 likes - added

    •••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

  • 10:57 Popular The Nervous System, Part 3 - Synapses!: Crash Course A&P #10

    The Nervous System, Part 3 - Synapses!: Crash Course A&P #10

    1,417 views / 0 likes - added

    •••SUBBABLE MESSAGE••• TO: NerdFighteria FROM: Dave at DTXC.CO Cycling t-shirts at DTXC.CO. Don't give up the Road! DFTBA! *** Subbable Co-Sponsors: Logan Sanders https://www.facebook.com/perrylogans Dr. Boyev http://youtube.com/taichiknees *** You can di

  • 10:08 Popular Central Nervous System: Crash Course A&P #11

    Central Nervous System: Crash Course A&P #11

    1,191 views / 1 likes - added

    Today Hank talks about your central nervous system. In this episode we'll explore how your brain develops and how important location is for each of your brain's many functions. Table of Contents Central Nervous System, Location and Brain Function 1:48 Bra

  • 10:02 Popular Peripheral Nervous System: Crash Course A&P #12

    Peripheral Nervous System: Crash Course A&P #12

    1,531 views / 2 likes - added

    It is now time to meet the system that helps your crazy brain stay in touch with the outside world. We follow up last week's tour of the central nervous system with a look at your peripheral nervous system, its afferent and efferent divisions, how it proc

  • 08:49 Popular Autonomic Nervous System: Crash Course A&P #13

    Autonomic Nervous System: Crash Course A&P #13

    1,513 views / 1 likes - added

    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 ner

  • 14:33 Popular The Sun&The Earth: Crash Course Big History #3

    The Sun&The Earth: Crash Course Big History #3

    939 views / 2 likes - added

    In which John Green, Hank Green, and Emily Graslie teach you about our Sun, and the formation of the planets. We're going to focus on the formation and development of the Earth, because that's where people live. You'll learn about the Solar nebula, the bi

  • 13:29 Popular Life Begins: Crash Course Big History #4

    Life Begins: Crash Course Big History #4

    880 views / 1 likes - added

    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 dev

  • 15:05 Popular The Evolutionary Epic: Crash Course Big History #5

    The Evolutionary Epic: Crash Course Big History #5

    997 views / 0 likes - added

    In which John Green, Hank Green, and Emily Graslie teach you about evolution. So, in the last 3.8 billion years, life on Earth has evolved from single-celled prokaryotes to the dizzying array of life we have today. So how did all this happen? We'll talk a

  • 13:58 Popular The Modern Revolution: Crash Course Big History #8

    The Modern Revolution: Crash Course Big History #8

    811 views / 0 likes - added

    In which Hank and John Green teach you a Crash Course on the modern revolution, and the upside of the progress that humanity has made in the last 500 years or so. And while there are two sides to every history, and many of these changes haven't been great

  • 12:20 The Anthropocene and the Near Future: Crash Course Big History #9

    The Anthropocene and the Near Future: Crash Course Big History #9

    685 views / 1 likes - added

    In which John Green, Hank Green, and Emily Graslie teach you about the Anthropocene, an unofficial geological era that covers the last century or so, in which humanity has made massive progress. We've discovered the Higgs-Boson particle, and awesome elect

  • 13:31 Popular The Deep Future: Crash Course Big History #10

    The Deep Future: Crash Course Big History #10

    827 views / 2 likes - added

    Finally, after what seems like eons and eons, the end is nigh. We're talking not only about the end of Crash Course Big History, but also the end of everything. The end of humanity and the end of the universe.John and Hank Green will teach you about what

  • 14:04 Popular Money&Debt: Crash Course World History 202

    Money&Debt: Crash Course World History 202

    903 views / 0 likes - added

    In which John Green teaches about filthy, filthy lucre. Money. And Debt. So, what is money? And what is it for? And why do we use money? And why does it all disappear so quickly after payday? John will look into 75% of these questions, and if he doesn't c

  • 10:08 Popular Climate Change, Chaos, and The Little Ice Age - Crash Course World History 206

    Climate Change, Chaos, and The Little Ice Age - Crash Course World History 206

    1,145 views / 2 likes - added

    In which John Green teaches you about the Little Ice Age. The Little Ice Age was a period of global cooling that occurred from the 13th to the 19th centuries. This cooling was likely caused by a number of factors, including unusual solar activity and volc

  • 07:21 Popular Humans and Energy: Crash Course World History 207

    Humans and Energy: Crash Course World History 207

    1,099 views / 1 likes - added

    In which Stan Muller subs for John Green and teaches you about energy and humanity. Today we discuss the ideas put forth by Alfred Crosby in his book, Children of the Sun. Historically, almost all of the energy that humans use has been directly or indirec

  • 10:30 Popular Drought and Famine: Crash Course World History #208

    Drought and Famine: Crash Course World History #208

    1,213 views / 0 likes - added

    In which John Green teaches you a little bit about drought, which is a natural weather phenomenon, and famine, which is almost always the result of human activity. Throughout human history, when food shortages strike humanity, there was food around. There

  • 09:10 Popular HOW World War I Started: Crash Course World History 209

    HOW World War I Started: Crash Course World History 209

    1,498 views / 6 likes - added

    In which John Green teaches you about World War I and how it got started. Crash Course doesn't usually talk much about dates, but the way that things unfolded in July and August of 1914 are kind of important to understanding the Great War. You'll learn ab

  • 12:59 Popular The End of Civilization (In the Bronze Age): Crash Course World History 211

    The End of Civilization (In the Bronze Age): Crash Course World History 211

    861 views / 1 likes - added

    In which John Green teaches you about the Bronze Age civilization in what we today call the middle east, and how the vast, interconnected civilization that encompassed Egypt, The Levant, and Mesopotamia came to an end. What's that you say? There was no su

  • 12:31 Popular The Railroad Journey and the Industrial Revolution: Crash Course World History 214

    The Railroad Journey and the Industrial Revolution: Crash Course World History 214

    742 views / 2 likes - added

    In which John Green teaches you about railroads, and some of the ways they changed the world, and how they were a sort of microcosm for the Industrial Revolution as a whole. Prior to the invention of steam powered railroads, pretty much all locomotion had

  • 12:51 Popular Population, Sustainability, and Malthus: Crash Course World History 215

    Population, Sustainability, and Malthus: Crash Course World History 215

    1,138 views / 0 likes - added

    In which John Green teaches you about population. So, how many people can reasonably live on the Earth? Thomas Malthus got it totally wrong in the 19th century, but for some reason, he keeps coming up when we talk about population. In 1800, the human popu

  • 11:44 Popular The Mughal Empire and Historical Reputation: Crash Course World History #217

    The Mughal Empire and Historical Reputation: Crash Course World History #217

    994 views / 0 likes - added

    There's a new Crash Course poster with all your favorite World History characters! Czech it: http://store.dftba.com/products/crashcourse-characters-poster In which John Green teaches you about the Mughal Empire, which ruled large swaths of the Indian Sub-

  • 15:07 Popular Luther and the Protestant Reformation: Crash Course World History #218

    Luther and the Protestant Reformation: Crash Course World History #218

    990 views / 3 likes - added

    In which John Green teaches you about the Protestant Reformation. Prior to the Protestant Reformation, pretty much everyone in Europe was a Roman Catholic. Not to get all great man, but Martin Luther changed all that. Martin Luther didn't like the corrupt

  • 13:16 Popular Charles V and the Holy Roman Empire: Crash Course World History #219

    Charles V and the Holy Roman Empire: Crash Course World History #219

    1,090 views / 2 likes - added

    Get the new Crash Course World History Character poster here: http://store.dftba.com/products/crashcourse-characters-poster In which John Green teaches you about the Holy Roman Empire by teaching you about Charles V. Charles Hapsburg was the holy Roman Em

  • 11:02 Popular World War II, A War for Resources: Crash Course World History #220

    World War II, A War for Resources: Crash Course World History #220

    1,673 views / 11 likes - added

    In which John Green teaches you about World War II, and some of the causes behind the war. In a lot of ways, WWII was about resources, and especially about food. The expansionist aggression of both Germany and Japan were in a lot of ways about resources.

  • 11:18 Popular The Vikings! - Crash Course World History 224

    The Vikings! - Crash Course World History 224

    1,302 views / 5 likes - added

    In which John Green teaches you about Vikings! That's right, one of our most requested subjects, the Vikings, right here on Crash Course. So what's the deal with Vikings? Well, the stuff you've heard about them may not be true. The Vikings weren't just pa

  • 13:33 Popular Japan in the Heian Period and Cultural History: Crash Course World History 227

    Japan in the Heian Period and Cultural History: Crash Course World History 227

    1,307 views / 7 likes - added

    In which John Green teaches you about what westerners call the middle ages and the lives of the aristocracy...in Japan. The Heian period in Japan lasted from 794CE to 1185CE, and it was an interesting time in Japan. Rather than being known for a thriving

  • 10:54 Popular Intro to Psychology - Crash Course Psychology #1

    Intro to Psychology - Crash Course Psychology #1

    999 views / 0 likes - added

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  • 10:51 Popular Psychological Research - Crash Course Psychology #2

    Psychological Research - Crash Course Psychology #2

    807 views / 1 likes - added

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  • 10:14 Popular The Chemical Mind - Crash Course Psychology #3

    The Chemical Mind - Crash Course Psychology #3

    936 views / 0 likes - added

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  • 12:34 Popular Meet Your Master: Getting to Know Your Brain - Crash Course Psychology #4

    Meet Your Master: Getting to Know Your Brain - Crash Course Psychology #4

    912 views / 0 likes - added

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  • 10:46 Popular Sensation&Perception - Crash Course Psychology #5

    Sensation&Perception - Crash Course Psychology #5

    742 views / 0 likes - added

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  • 10:24 Popular Homunculus - Crash Course Psychology #6

    Homunculus - Crash Course Psychology #6

    715 views / 0 likes - added

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  • 10:00 Perceiving is Believing - Crash Course Psychology #7

    Perceiving is Believing - Crash Course Psychology #7

    676 views / 0 likes - added

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  • 09:34 Popular Consciousness - Crash Course Psychology #8

    Consciousness - Crash Course Psychology #8

    1,099 views / 0 likes - added

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  • 10:41 Popular To Sleep, Perchance to Dream - Crash Course Psychology #9

    To Sleep, Perchance to Dream - Crash Course Psychology #9

    1,312 views / 0 likes - added

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  • 11:19 Altered States - Crash Course Psychology #10

    Altered States - Crash Course Psychology #10

    682 views / 0 likes - added

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  • 11:50 Popular How to Train a Brain - Crash Course Psychology #11

    How to Train a Brain - Crash Course Psychology #11

    1,115 views / 0 likes - added

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  • 09:35 Popular The Bobo Beatdown - Crash Course Psychology #12

    The Bobo Beatdown - Crash Course Psychology #12

    843 views / 0 likes - added

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  • 09:55 Popular How We Make Memories - Crash Course Psychology #13

    How We Make Memories - Crash Course Psychology #13

    1,135 views / 0 likes - added

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  • 10:18 Popular Remembering and Forgetting - Crash Course Psychology #14

    Remembering and Forgetting - Crash Course Psychology #14

    941 views / 1 likes - added

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  • 10:42 Popular Cognition: How Your Mind Can Amaze and Betray You - Crash Course Psychology #15

    Cognition: How Your Mind Can Amaze and Betray You - Crash Course Psychology #15

    906 views / 1 likes - added

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  • 10:02 Popular Language: Crash Course Psychology #16

    Language: Crash Course Psychology #16

    879 views / 0 likes - added

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  • 11:20 Popular The Power of Motivation: Crash Course Psychology #17

    The Power of Motivation: Crash Course Psychology #17

    1,016 views / 0 likes - added

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  • 09:50 Popular The Growth of Knowledge: Crash Course Psychology #18

    The Growth of Knowledge: Crash Course Psychology #18

    1,035 views / 0 likes - added

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  • 11:38 Popular Monkeys and Morality: Crash Course Psychology #19

    Monkeys and Morality: Crash Course Psychology #19

    845 views / 0 likes - added

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  • 10:15 Popular Adolescence: Crash Course Psychology #20

    Adolescence: Crash Course Psychology #20

    1,022 views / 0 likes - added

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  • 12:24 Popular Rorschach&Freudians: Crash Course Psychology #21

    Rorschach&Freudians: Crash Course Psychology #21

    708 views / 0 likes - added

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  • 11:08 Popular Measuring Personality: Crash Course Psychology #22

    Measuring Personality: Crash Course Psychology #22

    1,032 views / 1 likes - added

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  • 12:39 Popular Controversy of Intelligence: Crash Course Psychology #23

    Controversy of Intelligence: Crash Course Psychology #23

    994 views / 0 likes - added

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  • 11:04 Popular Brains Vs. Bias: Crash Course Psychology #24

    Brains Vs. Bias: Crash Course Psychology #24

    709 views / 1 likes - added

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  • 10:51 Popular Feeling All the Feels: Crash Course Psychology #25

    Feeling All the Feels: Crash Course Psychology #25

    738 views / 2 likes - added

    ***Subbable Message*** To Robert, Thank you for showing me the world, darling! From Amy and That's happiness; to be dissolved into something complete and great. From Ty Scaletta ****** You can directly support Crash Course at http://www.subbable.com/crash

  • 10:20 Popular Emotion, Stress and Health: Crash Course Psychology #26

    Emotion, Stress and Health: Crash Course Psychology #26

    968 views / 1 likes - added

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  • 10:10 Popular Psychological Disorders: Crash Course Psychology #28

    Psychological Disorders: Crash Course Psychology #28

    871 views / 0 likes - added

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  • 11:32 Popular OCD&Anxiety Disorders: Crash Course Psychology #29

    OCD&Anxiety Disorders: Crash Course Psychology #29

    892 views / 0 likes - added

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  • 10:00 Depressive and Bipolar Disorders: Crash Course Psychology #30

    Depressive and Bipolar Disorders: Crash Course Psychology #30

    685 views / 2 likes - added

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  • 10:51 Trauma&Addiction: Crash Course Psychology #31

    Trauma&Addiction: Crash Course Psychology #31

    655 views / 0 likes - added

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  • 11:44 Schizophrenia&Dissociative Disorders: Crash Course Psychology #32

    Schizophrenia&Dissociative Disorders: Crash Course Psychology #32

    610 views / 0 likes - added

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  • 10:12 Popular Eating and Body Dysmorphic Disorders: Crash Course Psychology #33

    Eating and Body Dysmorphic Disorders: Crash Course Psychology #33

    741 views / 0 likes - added

    Get Help: If you think you have an eating disorder, please contact http://www.nationaleatingdisorders.org/ for help! You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as $0 to keep up with everything we'r

  • 10:58 Popular Personality Disorders: Crash Course Psychology #34

    Personality Disorders: Crash Course Psychology #34

    875 views / 1 likes - added

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  • 11:23 Popular Getting Help - Psychotherapy: Crash Course Psychology #35

    Getting Help - Psychotherapy: Crash Course Psychology #35

    706 views / 0 likes - added

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  • 11:09 Biomedical Treatments: Crash Course Psychology #36

    Biomedical Treatments: Crash Course Psychology #36

    687 views / 0 likes - added

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  • 10:48 Popular Social Thinking: Crash Course Psychology #37

    Social Thinking: Crash Course Psychology #37

    707 views / 0 likes - added

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  • 10:08 Popular Social Influence: Crash Course Psychology #38

    Social Influence: Crash Course Psychology #38

    766 views / 0 likes - added

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  • 09:54 Popular Prejudice&Discrimination: Crash Course Psychology #39

    Prejudice&Discrimination: Crash Course Psychology #39

    765 views / 0 likes - added

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  • 10:41 Aggression V. Altruism: Crash Course Psychology #40

    Aggression V. Altruism: Crash Course Psychology #40

    680 views / 0 likes - added

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  • 10:12 Popular The Nucleus: Crash Course Chemistry #1

    The Nucleus: Crash Course Chemistry #1

    915 views / 1 likes - added

    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 f

  • 12:47 Stoichiometry: Chemistry for Massive Creatures - Crash Course Chemistry #6

    Stoichiometry: Chemistry for Massive Creatures - Crash Course Chemistry #6

    682 views / 0 likes - added

    Chemists need stoichiometry to make the scale of chemistry more understandable - Hank is here to explain why, and to teach us how to use it. Table of Contents Atomic Mass Units 2:24 Moles 5:12 Molar Mass 5:59 Equation Balancing 8:45 Molar Ratios 11:11 Cra

  • 13:34 Popular Water and Solutions -- for Dirty Laundry: Crash Course Chemistry #7

    Water and Solutions -- for Dirty Laundry: Crash Course Chemistry #7

    1,584 views / 0 likes - added

    Dihydrogen monoxide (better know as water) is the key to nearly everything. It falls from the sky, makes up 60% of our bodies, and just about every chemical process related to life takes place with it or in it. Without it, none of the chemical reactions t

  • 11:17 Popular Acid-Base Reactions in Solution: Crash Course Chemistry #8

    Acid-Base Reactions in Solution: Crash Course Chemistry #8

    1,415 views / 0 likes - added

    Last week, Hank talked about how stuff mixes together in solutions. Today, and for the next few weeks, he will talk about the actual reactions happening in those solutions - atoms reorganizing themselves to create whole new substances in the processes tha

  • 11:31 Precipitation Reactions: Crash Course Chemistry #9

    Precipitation Reactions: Crash Course Chemistry #9

    664 views / 0 likes - added

    A lot of ionic compounds dissolve in water, dissociating into individual ions. But when two ions find each other that form an insoluble compound, they suddenly fall out of solution in what's called a precipitation reaction. In this episode of Crash Course

  • 11:13 Popular Redox Reactions: Crash Course Chemistry #10

    Redox Reactions: Crash Course Chemistry #10

    1,129 views / 0 likes - added

    All the magic that we know is in the transfer of electrons. Reduction (gaining electrons) and oxidation (the loss of electrons) combine to form Redox chemistry, which contains the majority of chemical reactions. As electrons jump from atom to atom, they c

  • 10:43 How To Speak Chemistrian: Crash Course Chemistry #11

    How To Speak Chemistrian: Crash Course Chemistry #11

    646 views / 0 likes - added

    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 Monatom

  • 09:03 Popular The Ideal Gas Law: Crash Course Chemistry #12

    The Ideal Gas Law: Crash Course Chemistry #12

    1,157 views / 0 likes - added

    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 beh

  • 11:45 Popular Ideal Gas Problems: Crash Course Chemistry #13

    Ideal Gas Problems: Crash Course Chemistry #13

    922 views / 0 likes - added

    We don't live in a perfect world, and neither do gases - it would be great if their particles always fulfilled the assumptions of the ideal gas law, and we could use PV=nRT to get the right answer every time. Unfortunately, the ideal gas law (like our cul

  • 11:35 Real Gases: Crash Course Chemistry #14

    Real Gases: Crash Course Chemistry #14

    570 views / 0 likes - added

    Hank bursts our ideal gas law bubble, er, balloon, and brings us back to reality, explaining how the constants in the gas law aren't all that constant; how the ideal gas law we've spent the past two weeks with has to be corrected for volume because atoms

  • 11:55 Popular Partial Pressures&Vapor Pressure: Crash Course Chemistry #15

    Partial Pressures&Vapor Pressure: Crash Course Chemistry #15

    718 views / 0 likes - added

    This week we continue to spend quality time with gases, more deeply investigating some principles regarding pressure - including John Dalton's Law of Partial Pressures, vapor pressure - and demonstrating the method for collecting gas over water. Table of

  • 11:26 Popular Passing Gases: Effusion, Diffusion and the Velocity of a Gas - Crash Course Chemistry #16

    Passing Gases: Effusion, Diffusion and the Velocity of a Gas - Crash Course Chemistry #16

    1,285 views / 0 likes - added

    We have learned over the past few weeks that gases have real-life constraints on how they move here in the non-ideal world. As with most things in chemistry (and also in life) how a gas moves is more complex than it at first appears. In this episode, Hank

  • 09:26 Energy&Chemistry: Crash Course Chemistry #17

    Energy&Chemistry: Crash Course Chemistry #17

    639 views / 0 likes - added

    Grumpy Professor Hank admits to being wrong about how everything is chemicals. But he now wants you to listen as he blows your mind with a new sweeping statement: everything (yes, really everything this time) is energy. What?! This week, Hank takes us on

  • 11:24 Popular Enthalpy: Crash Course Chemistry #18

    Enthalpy: Crash Course Chemistry #18

    1,128 views / 0 likes - added

    Energy is like the bestest best friend ever and yet, most of the time we take it for granted. Hank feels bad for our friend and wants us to learn more about it so that we can understand what it's trying to tell us - like that any bond between two atoms co

  • 11:57 Popular Calorimetry: Crash Course Chemistry #19

    Calorimetry: Crash Course Chemistry #19

    729 views / 0 likes - added

    Today's episode dives into the HOW of enthalpy. How we calculate it, and how we determine it experimentally...even if our determinations here at Crash Course Chemistry are somewhat shoddy. -- Table of Contents Hess' Law 2:30 Calorimeter 3:12 Calorimetry 3

  • 13:41 Popular Entropy: Embrace the Chaos! Crash Course Chemistry #20

    Entropy: Embrace the Chaos! Crash Course Chemistry #20

    775 views / 0 likes - added

    Life is chaos and the universe tends toward disorder. But why? If you think about it, there are only a few ways for things to be arranged in an organized manner, but there are nearly infinite other ways for those same things to be arranged. Simple rules o

  • 09:03 Popular Lab Techniques&Safety: Crash Course Chemistry #21

    Lab Techniques&Safety: Crash Course Chemistry #21

    928 views / 0 likes - added

    Hank takes a break from the desk to bring you to the lab in order to demonstrate some important points about the practical side of chemistry - experimentation in the laboratory. You'll learn what to wear in the lab, how to dispose of chemicals safely, how

  • 09:46 Popular Atomic Hook-Ups - Types of Chemical Bonds: Crash Course Chemistry #22

    Atomic Hook-Ups - Types of Chemical Bonds: Crash Course Chemistry #22

    948 views / 0 likes - added

    Atoms are a lot like us - we call their relationships "bonds," and there are many different types. Each kind of atomic relationship requires a different type of energy, but they all do best when they settle into the lowest stress situation possible. The n

  • 10:46 Popular Polar&Non-Polar Molecules: Crash Course Chemistry #23

    Polar&Non-Polar Molecules: Crash Course Chemistry #23

    1,014 views / 1 likes - added

    *** PLEASE WATCH WITH ANNOTATIONS ON! SOME INACCURACIES IN GRAPHICS ARE NOTED AND CORRECTED IN ANNOTATIONS. THANKS! *** Molecules come in infinite varieties, so in order to help the complicated chemical world make a little more sense, we classify and cate

  • 11:38 Popular Bonding Models and Lewis Structures: Crash Course Chemistry #24

    Bonding Models and Lewis Structures: Crash Course Chemistry #24

    703 views / 0 likes - added

    Models are great, except they're also usually inaccurate. In this episode of Crash Course Chemistry, Hank discusses why we need models in the world and how we can learn from them... even when they're almost completely wrong. Plus, Lewis Structures! -- Tab

  • 10:52 Popular Orbitals: Crash Course Chemistry #25

    Orbitals: Crash Course Chemistry #25

    884 views / 0 likes - added

    In this episode of Crash Course Chemistry, Hank discusses what Molecules actually look like and why, some quantum-mechanical three dimensional wave functions are explored, he touches on hybridization, and delves into sigma and pi bonds. -- Table of Conten

  • 11:04 Popular Liquids: Crash Course Chemistry #26

    Liquids: Crash Course Chemistry #26

    744 views / 1 likes - added

    In this episode of Crash Course Chemistry, Hank gives you the low down on things like London Dispersion Forces, Hydrogen Bonds, Cohesion, Adhesion, Viscosity, Capillary Action, Surface Tension, and why liquids are just... WEIRD! -- TABLE OF CONTENTS Londo

  • 08:21 Solutions: Crash Course Chemistry #27

    Solutions: Crash Course Chemistry #27

    698 views / 0 likes - added

    This week, Hank elaborates on why Fugu can kill you by illustrating the ideas of solutions and discussing molarity, molality, and mass percent. Also, why polar solvents dissolve polar solutes, and nonpolar solvents dissolve nonpolar solutes. All that plus

  • 10:57 Popular Equilibrium: Crash Course Chemistry #28

    Equilibrium: Crash Course Chemistry #28

    1,176 views / 0 likes - added

    In this episode of Crash Course Chemistry, Hank goes over the ideas of keeping your life balance... well, your chemical life. Equilibrium is all about balance and today Hank discusses Chemical Equilibrium, Concentration, Temperature, and Pressure. Also, h

  • 09:29 Popular Equilibrium Equations: Crash Course Chemistry #29

    Equilibrium Equations: Crash Course Chemistry #29

    737 views / 0 likes - added

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  • 11:23 Popular pH and pOH: Crash Course Chemistry #30

    pH and pOH: Crash Course Chemistry #30

    910 views / 1 likes - added

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  • 11:41 Popular Buffers, the Acid Rain Slayer: Crash Course Chemistry #31

    Buffers, the Acid Rain Slayer: Crash Course Chemistry #31

    1,017 views / 2 likes - added

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  • 09:57 Kinetics: Chemistry's Demolition Derby - Crash Course Chemistry #32

    Kinetics: Chemistry's Demolition Derby - Crash Course Chemistry #32

    631 views / 0 likes - added

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  • 09:18 Popular Doing Solids: Crash Course Chemistry #33

    Doing Solids: Crash Course Chemistry #33

    1,099 views / 0 likes - added

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  • 08:20 Popular Network Solids and Carbon: Crash Course Chemistry #34

    Network Solids and Carbon: Crash Course Chemistry #34

    930 views / 0 likes - added

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  • 09:27 Popular Silicon - The Internet's Favorite Element: Crash Course Chemistry #35

    Silicon - The Internet's Favorite Element: Crash Course Chemistry #35

    1,292 views / 0 likes - added

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  • 09:04 Popular Electrochemistry: Crash Course Chemistry #36

    Electrochemistry: Crash Course Chemistry #36

    1,488 views / 0 likes - added

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  • 09:42 Popular The History of Atomic Chemistry: Crash Course Chemistry #37

    The History of Atomic Chemistry: Crash Course Chemistry #37

    1,046 views / 0 likes - added

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  • 09:58 Popular Nuclear Chemistry: Crash Course Chemistry #38

    Nuclear Chemistry: Crash Course Chemistry #38

    751 views / 0 likes - added

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  • 11:18 Popular Nuclear Chemistry Part 2: Fusion and Fission - Crash Course Chemistry #39

    Nuclear Chemistry Part 2: Fusion and Fission - Crash Course Chemistry #39

    1,726 views / 1 likes - added

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  • 11:32 Popular Hydrocarbon Power! - Crash Course Chemistry #40

    Hydrocarbon Power! - Crash Course Chemistry #40

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  • 09:36 Popular Alkenes&Alkynes - Crash Course Chemistry #41

    Alkenes&Alkynes - Crash Course Chemistry #41

    1,086 views / 0 likes - added

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  • 09:50 Popular Aromatics and Cyclic Compounds - Crash Course Chemistry #42

    Aromatics and Cyclic Compounds - Crash Course Chemistry #42

    1,780 views / 0 likes - added

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  • 08:38 Popular Hydrocarbon Derivatives - Crash Course Chemistry #43

    Hydrocarbon Derivatives - Crash Course Chemistry #43

    1,114 views / 0 likes - added

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  • 09:05 Popular Nomenclature - Crash Course Chemistry #44

    Nomenclature - Crash Course Chemistry #44

    1,361 views / 0 likes - added

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  • 10:15 Popular Polymers - Crash Course Chemistry #45

    Polymers - Crash Course Chemistry #45

    1,964 views / 0 likes - added

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  • 10:34 Popular The Global Carbon Cycle - Crash Course Chemistry #46

    The Global Carbon Cycle - Crash Course Chemistry #46

    1,699 views / 0 likes - added

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  • 12:26 Popular When is Thanksgiving? Colonizing America: Crash Course US History #2

    When is Thanksgiving? Colonizing America: Crash Course US History #2

    881 views / 1 likes - added

    In which John Green teaches you about the (English) colonies in what is now the United States. He covers the first permanent English colony at Jamestown, Virginia, the various theocracies in Massachusetts, the feudal kingdom in Maryland, and even a bit ab

  • 11:38 The Quakers, the Dutch, and the Ladies: Crash Course US History #4

    The Quakers, the Dutch, and the Ladies: Crash Course US History #4

    655 views / 2 likes - added

    In which John Green teaches you about some of the colonies that were not in Virginia or Massachussetts. Old New York was once New Amsterdam. Why they changed it, I can say; ENGLISH people just liked it better that way, and when the English took New Amster

  • 10:40 Popular The Seven Years War and the Great Awakening: Crash Course US History #5

    The Seven Years War and the Great Awakening: Crash Course US History #5

    35.8k views / 308 likes - added

    In which John Green teaches you about the beginnings of the American Revolution in a video titled The Seven Years War. Confusing? Maybe. John argues that the Seven Years War, which is often called the French and Indian War in the US, laid a lot of the gro

  • 12:41 Popular Who Won the American Revolution?: Crash Course US History #7

    Who Won the American Revolution?: Crash Course US History #7

    1,037 views / 1 likes - added

    In which John Green teaches you about the American Revolution. And the Revolutionary War. I know we've labored the point here, but they weren't the same thing. In any case, John will teach you about the major battles of the war, and discuss the strategies

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  • 13:57 Popular Where US Politics Came From: Crash Course US History #9

    Where US Politics Came From: Crash Course US History #9

    756 views / 0 likes - added

    In which John Green teaches you where American politicians come from. In the beginning, soon after the US constitution was adopted, politics were pretty non-existent. George Washington was elected president with no opposition, everything was new and excit

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  • 14:11 Popular The Market Revolution: Crash Course US History #12

    The Market Revolution: Crash Course US History #12

    781 views / 0 likes - added

    In which John Green teaches you about the Market Revolution. In the first half of the 19th century, the way people lived and worked in the United States changed drastically. At play was the classic (if anything in a 30 year old nation can be called classi

  • 05:28 Popular History of the 4th of July: Crash Course US History Special

    History of the 4th of July: Crash Course US History Special

    821 views / 3 likes - added

    In which John Green teaches you a bit about the 4th of July. In this special short Crash Course, John celebrates American Independence Day by teaching you how the holiday came to be on the 4th of July, and the many ways that Americans celebrate the day. T

  • 10:54 Popular The Civil War Part 2: Crash Course US History #21

    The Civil War Part 2: Crash Course US History #21

    1,226 views / 6 likes - added

    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 interven

  • 12:44 Popular Westward Expansion: Crash Course US History #24

    Westward Expansion: Crash Course US History #24

    1,694 views / 5 likes - added

    In which John Green teaches you about the Wild, Wild, West, which as it turns out, wasn't as wild as it seemed in the movies. When we think of the western expansion of the United States in the 19th century, we're conditioned to imagine the loner. The self

  • 12:45 Popular Growth, Cities, and Immigration: Crash Course US History #25

    Growth, Cities, and Immigration: Crash Course US History #25

    1,247 views / 2 likes - added

    In which John Green teaches you about the massive immigration to the United States during the late 19th and early 20th century. Immigrants flocked to the US from all over the world in this time period. Millions of Europeans moved to the US where they drov

  • 13:51 Popular Gilded Age Politics:Crash Course US History #26

    Gilded Age Politics:Crash Course US History #26

    791 views / 0 likes - added

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  • 15:01 Popular The Progressive Era: Crash Course US History #27

    The Progressive Era: Crash Course US History #27

    899 views / 1 likes - added

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  • 13:40 Popular America in World War I: Crash Course US History #30

    America in World War I: Crash Course US History #30

    896 views / 2 likes - added

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  • 13:12 Popular The Roaring 20's: Crash Course US History #32

    The Roaring 20's: Crash Course US History #32

    2,199 views / 0 likes - added

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  • 13:35 Popular The Cold War: Crash Course US History #37

    The Cold War: Crash Course US History #37

    916 views / 3 likes - added

    Crash Course World History is now available on DVD! Visit http://dft.ba/-CCWHDVD to buy a set for your home or classroom. You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as $0 to keep up with everything

  • 13:42 Popular The Cold War in Asia: Crash Course US History #38

    The Cold War in Asia: Crash Course US History #38

    953 views / 1 likes - added

    Crash Course World History is now available on DVD! Visit http://dft.ba/-CCWHDVD to buy a set for your home or classroom. You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as $0 to keep up with everything

  • 11:58 Popular Civil Rights and the 1950s: Crash Course US History #39

    Civil Rights and the 1950s: Crash Course US History #39

    1,175 views / 5 likes - added

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  • 13:53 Popular George HW Bush and the End of the Cold War: Crash Course US History #44

    George HW Bush and the End of the Cold War: Crash Course US History #44

    955 views / 2 likes - added

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  • 15:40 Popular Obamanation: Crash Course US History #47

    Obamanation: Crash Course US History #47

    765 views / 0 likes - added

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  • 12:42 Popular Of Pentameter&Bear Baiting - Romeo&Juliet Part I: Crash Course English Literature #2

    Of Pentameter&Bear Baiting - Romeo&Juliet Part I: Crash Course English Literature #2

    711 views / 0 likes - added

    In which John Green examines Romeo&Juliet by William Shakespeare. John delves into the world of Bill Shakespeare's famous star-crossed lovers and examines what the play is about, its structure, and the context in which it was written. Have you ever wanted

  • 08:50 Popular Was Gatsby Great? The Great Gatsby Part 2: Crash Course English Literature #5

    Was Gatsby Great? The Great Gatsby Part 2: Crash Course English Literature #5

    852 views / 3 likes - added

    SPOILER ALERT: This video assumes you've read the book. In which John Green continues to explore F. Scott Fitzgerald's novel, The Great Gatsby. In this installment, John looks into the titular Gatsby's purported Greatness. Gatsby's single-minded pursuit o

  • 10:11 Popular Before I Got My Eye Put Out - The Poetry of Emily Dickinson: Crash Course English Lit #8

    Before I Got My Eye Put Out - The Poetry of Emily Dickinson: Crash Course English Lit #8

    1,178 views / 1 likes - added

    In which John Green concludes the Crash Course Literature mini-series with an examination of the poetry of Emily Dickinson. Sure, John explores the creepy biographical details of Dickinson's life, but he also gets into why her poems have remained relevant

  • 12:07 Popular A Long and Difficult Journey, or  The Odyssey: Crash Course Literature 201

    A Long and Difficult Journey, or The Odyssey: Crash Course Literature 201

    749 views / 1 likes - added

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  • 12:38 Frankenstein Part II: Crash Course Literature 206

    Frankenstein Part II: Crash Course Literature 206

    670 views / 0 likes - added

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  • 13:12 Popular Reader, it's Jane Eyre - Crash Course Literature 207

    Reader, it's Jane Eyre - Crash Course Literature 207

    770 views / 2 likes - added

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  • 11:18 Popular The Poetry of Sylvia Plath: Crash Course Literature 216

    The Poetry of Sylvia Plath: Crash Course Literature 216

    721 views / 2 likes - added

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  • 14:09 Popular Biological Molecules - You Are What You Eat: Crash Course Biology #3

    Biological Molecules - You Are What You Eat: Crash Course Biology #3

    1,530 views / 0 likes - added

    Hank talks about the molecules that make up every living thing - carbohydrates, lipids, and proteins - and how we find them in our environment and in the food that we eat. Crash Course Biology is now available on DVD! http://dftba.com/product/1av/CrashCou

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  • 11:35 Popular Eukaryopolis - The City of Animal Cells: Crash Course Biology #4

    Eukaryopolis - The City of Animal Cells: Crash Course Biology #4

    1,091 views / 0 likes - added

    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-Se

  • 11:45 Popular In Da Club - Membranes&Transport: Crash Course Biology #5

    In Da Club - Membranes&Transport: Crash Course Biology #5

    730 views / 0 likes - added

    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 Cras

  • 10:28 Popular Plant Cells: Crash Course Biology #6

    Plant Cells: Crash Course Biology #6

    1,486 views / 1 likes - added

    Hank describes why plants are so freaking amazing - discussing their evolution, and how their cells are both similar to&different from animal cells. Crash Course Biology now available on DVD! http://dftba.com/product/1av/CrashCourse-Biology-The-Complete-S

  • 13:26 Popular ATP&Respiration: Crash Course Biology #7

    ATP&Respiration: Crash Course Biology #7

    840 views / 0 likes - added

    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/Cras

  • 13:15 Popular Photosynthesis: Crash Course Biology #8

    Photosynthesis: Crash Course Biology #8

    1,045 views / 3 likes - added

    Hank explains the extremely complex series of reactions whereby plants feed themselves on sunlight, carbon dioxide and water, and also create some by products we're pretty fond of as well. Crash Course Biology is now available on DVD! http://dftba.com/pro

  • 10:18 Popular Heredity: Crash Course Biology #9

    Heredity: Crash Course Biology #9

    827 views / 0 likes - added

    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:/

  • 12:59 Popular DNA Structure and Replication: Crash Course Biology #10

    DNA Structure and Replication: Crash Course Biology #10

    1,185 views / 0 likes - added

    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

  • 14:08 Popular DNA, Hot Pockets,&The Longest Word Ever: Crash Course Biology #11

    DNA, Hot Pockets,&The Longest Word Ever: Crash Course Biology #11

    1,122 views / 0 likes - added

    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 B

  • 10:48 Popular Mitosis: Splitting Up is Complicated - Crash Course Biology #12

    Mitosis: Splitting Up is Complicated - Crash Course Biology #12

    1,410 views / 0 likes - added

    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 Cras

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  • 11:43 Popular Cell Meiosis:  Crash Course Biology #13

    Cell Meiosis: Crash Course Biology #13

    988 views / 0 likes - added

    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-Compl

  • 12:45 Popular Natural Selection - Crash Course Biology #14

    Natural Selection - Crash Course Biology #14

    2,013 views / 0 likes - added

    Hank guides us through the process of natural selection, the key mechanism of evolution. 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.fa

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  • 10:25 Popular Speciation: Of Ligers&Men - Crash Course Biology #15

    Speciation: Of Ligers&Men - Crash Course Biology #15

    1,484 views / 0 likes - added

    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.c

  • 11:32 Popular Animal Development: We're Just Tubes - Crash Course Biology #16

    Animal Development: We're Just Tubes - Crash Course Biology #16

    864 views / 0 likes - added

    Hank discusses the process by which organisms grow and develop, maintaining that, in the end, we're all just tubes. Crash Course Biology is now available on DVD! http://dft.ba/-8css Like CrashCourse on Facebook: http://www.facebook.com/youtubecrashcourse

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  • 10:57 Popular Evolutionary Development: Chicken Teeth - Crash Course Biology #17

    Evolutionary Development: Chicken Teeth - Crash Course Biology #17

    1,064 views / 0 likes - added

    Hank introduces us to the relatively new field of evolutionary developmental biology, which compares the developmental processes of different organisms to determine their ancestral relationship, and to discover how those processes evolved. Also fruit flie

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  • 11:05 Popular Population Genetics: When Darwin Met Mendel - Crash Course Biology #18

    Population Genetics: When Darwin Met Mendel - Crash Course Biology #18

    930 views / 0 likes - added

    Hank talks about population genetics, which helps to explain the evolution of populations over time by combing the principles of Mendel and Darwin, and by means of the Hardy-Weinberg equation. Crash Course Biology is now available on DVD! http://dft.ba/-8

  • 12:16 Popular Taxonomy: Life's Filing System - Crash Course Biology #19

    Taxonomy: Life's Filing System - Crash Course Biology #19

    1,232 views / 0 likes - added

    Hank tells us the background story and explains the importance of the science of classifying living things, also known as taxonomy. Crash Course Biology is now available on DVD! http://dft.ba/-8css Like CrashCourse on Facebook: http://www.facebook.com/You

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