Search Results: "space shuttle challenger crash"

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12:24
The Adventures Of Huckleberry Finn Part 1: Crash Course Literature #302

530 views / 1 likes - added 7 years ago

In which John Green teaches you about Mark Twain's The Adventures of Huckleberry Finn. This week, we'll talk a little bit about Samuel Langhorne Clemens, who wrote under the name Mark Twain, and how he mined his early life for decades to produce his prett
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Engineering Compilation: Crash Course Kids

748 views / 0 likes - added 8 years ago

Maybe you'd like to just hear about one topic for a while. We understand. Thus, we've created our Compilation Series. In this first (and longest) compilation video, we look at some of our videos about Engineering. Sabrina helps us to understand how engine
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Economic Systems And Macroeconomics: Crash Course Economics #3

1,003 views / 0 likes - added 8 years ago

In which Jacob Clifford and Adrienne Hill teach you about Economic Systems and Macroeconomics. So, economics is basically about choices. We'll look at some of the broadest economic choices when we talk about the difference between planned economies and ma
05:05
Can We Perform Surgery in Space?

450 views / 0 likes - added 6 years ago

Dr. George Pantalos and his team pioneer futuristic surgical tools for operations on astronauts and test them on NASA's zero-gravity plane. Experience intense, unique, and sometimes dangerous moments with scientists working in the field, as they explain f
09:02 Popular
Globalization And Trade And Poverty: Crash Course Economics #16

1,001 views / 0 likes - added 8 years ago

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 provid
What is an Animal? Crash Course Zoology #1

209 views / 1 likes - added 3 years ago

Check out Animal IQ on PBS Terra! https://youtu.be/Ejhbr_t7BlcSo what is an animal anyway? In our inaugural episode of Crash Course Zoology, well endeavor to answer just that because as it turns out, its complicated! But before we get there well need to i
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Focus & Concentration: Crash Course Study Skills #5

843 views / 0 likes - added 6 years ago

Sign up for your FREE trial of The Great Courses Plus here: http://ow.ly/PhPe30egcrb Have you ever noticed how easy it is to get distracted while studying – even when you know you really don’t have time for Facebook, Snapchat, Cookie Clicker, or whatever
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Non-Human Animals: Crash Course Philosophy #42

617 views / 0 likes - added 7 years ago

Today we are taking all the things we have learned this year about doing philosophy and applying that to moral considerations regarding non-human animals. We’ll explore what philosophers like Peter Singer and Carl Cohen have to say about their use, includ
03:40
This Is Not What Space Looks Like

566 views / 1 likes - added 7 years ago

Amazing images of the far reaches of the universe are everywhere, but are they accurate? What does space really look like? Yes, Apollo Flew Through the Van Allen Belts Going to the Moon - https://youtu.be/bLtgS2_qxJk Sign Up For The Seeker Newsletter Here
08:43
How Close Are We to Mining in Space?

441 views / 0 likes - added 4 years ago

Asteroids hold untold riches when it comes to untapped resources. We are getting closer to harvesting materials from these celestial objects, but how close are we to mining asteroids? Subscribe to Seeker! http://bit.ly/subscribeseeker Watch more How Close
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Motion In A Straight Line: Crash Course Physics #1

1,696 views / 1 likes - added 8 years ago

In this, THE FIRST EPISODE of Crash Course Physics, your host Dr. Shini Somara introduces us to the ideas of motion in a straight line. She talks about displacement, acceleration, time, velocity, and the definition of acceleration. Also, how does a physic
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This Sandwich Nearly Destroyed A Space Capsule

536 views / 0 likes - added 8 years ago

NASA astronauts deal with many dangers in space: deadly debris, harmful cosmic rays and corned beef sandwiches. Wait, what was that last one? Oh yeah, here’s how a lunch meat sandwich almost destroyed a space capsule that one time. SUBSCRIBE: https://goo.
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Trauma&Addiction: Crash Course Psychology #31

674 views / 0 likes - added 9 years ago

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.
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How Computers Calculate - the ALU: Crash Course Computer Science #5

720 views / 0 likes - added 7 years ago

Take the 2017 PBS Digital Studios Survey: http://surveymonkey.com/r/pbsds2017. 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
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The Roaring 20's: Crash Course US History #32

2,207 views / 0 likes - added 9 years ago

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. Free is nice, but if you can afford to pay a little every month, it really helps us to continue producing th
12:51
Life and Longevity: Crash Course History of Science #44

314 views / 0 likes - added 4 years ago

It's time to have a look at the future of human life and how technology could possibly extend longevity. But, within that tech, are questions of ethics that are not always at the top of mind when the tech is being developed. In this episode, Hank sits dow
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Bodies and Dollars: Crash Course History of Science #41

358 views / 0 likes - added 4 years ago

After World War Two, the applications of basic discoveries in biology took offand became big business. Today, well look at the rise of Big Pharma and GMO foods. Well also discuss how life-science technologies fundamentally changed reproduction: its time t
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Nuclear Physics Challenge | Space Time | PBS Digital Studios

706 views / 0 likes - added 7 years ago

Are you ready for some recreational nuclear physics? Previous Episode on Quantum Tunneling https://www.youtube.com/watch?v=-IfmgyXs7z8 Get your own Space Time tshirt at http://bit.ly/1QlzoBi Tweet at us! @pbsspacetime Facebook: facebook.com/pbsspacetime
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Political Campaigns: Crash Course Government And Politics #39

560 views / 0 likes - added 8 years ago

So political campaigns are a pretty big deal in the United States. For instance the 2012 presidential election clocked in at the most expensive ever - at around $6 billion dollars! Needless to say, money plays a very big role in American elections. So tod
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Stunning Ultra HD Video From Space

864 views / 1 likes - added 8 years ago

This week NASA released a first look of ultra-high definition video shot on and from the International Space Station. Here, 60 seconds of the most breathtaking new footage. Still haven’t subscribed to WIRED on YouTube? ►► http://wrd.cm/15fP7B7 CONNECT WIT
03:45
Could Space Travel Make You Go Blind?

518 views / 1 likes - added 7 years ago

Astronauts who return from long trips in space often return with vision loss, and now researchers think they know why. How Long Could You Survive In Outer Space? - https://youtu.be/RjkrqMm52JI Sign Up For The Seeker Newsletter Here - http://bit.ly/1UO1PxI
05:46
How 3D Printing in Space Could Revolutionize Manufacturing

279 views / 0 likes - added 3 years ago

There's a new 3D printer onboard the ISS that could mark the beginning of space-enabled manufacturing. Here's what that future could look like. Subscribe to Seeker!http://bit.ly/subscribeseeker Watch more Countdown to Launch: http://bit.ly/CTLplaylist Vis
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Normal Stuff In Not-So-Normal Places: Crash Course Kids 46.2

821 views / 0 likes - added 8 years ago

So, what happens to normal stuff (like water) when it goes to not so normal places? What happens if you take a glass of water to the top of Mt. Everest? Or Space? In this episode of Crash Course Kids, Sabrina shows us how matter is affected by different p
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Up, Up & Away: Crash Course Kids #16.2

1,014 views / 0 likes - added 8 years ago

So... what makes the wind? You might be surprised to learn that it has to do with two of Earth's spheres; The Hydrosphere and the Geosphere. In this episode of Crash Course Kids, Sabrina takes us to the beach to chat about how the wind comes into being an
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Kant & Categorical Imperatives: Crash Course Philosophy #35

994 views / 0 likes - added 7 years ago

Our next stop on our tour of ethics is Kant’s ethics. Today Hank explains hypothetical and categorical imperatives, the universalizability principle, autonomy, and what it means to treat people as ends-in-themselves, rather than as mere means. Get your ow
05:55
High-Speed Collisions In Space – Experiments With A Carrot Gun

639 views / 0 likes - added 7 years ago

Andy uses a carrot gun to discuss the hazards of micrometeoroid impacts in space, showing that at high enough speeds even tiny specks of dust can be dangerous. Why do high energy collisions in space make solid matter behave in a way that's wholly unfamili
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Recession, Hyperinflation, And Stagflation: Crash Course Econ #13

985 views / 0 likes - added 8 years ago

If you're ever put in charge of a national economy, there are a few things you should try to avoid. Before you laugh, just remember, you COULD be in charge of an economy someday. Someone has to do it, and anyway, if it could happen to Alan Greenspan, it c
09:27
Early Programming: Crash Course Computer Science #10

606 views / 0 likes - added 7 years ago

Since Joseph Marie Jacquard’s textile loom in 1801, there has been a demonstrated need to give our machines instructions. In the last few episodes, our instructions were already in our computer’s memory, but we need to talk about how they got there - this
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Skyscrapers, Statics, & Dynamics: Crash Course Engineering #26

275 views / 0 likes - added 4 years ago

What if you were on a high floor of a skyscraper and the building started swaying? Today well explore statics and dynamics, and what they mean for the structures we design. We look at the idea of static equilibrium, forces, and torques, and how free body
12:05
The Atomic Bomb: Crash Course History of Science #33

557 views / 0 likes - added 4 years ago

The story picks up where we left off last time, with Einstein writing the president of his new homeland, the United States, urging him to build a nuclear weapon before Hitler. This is the tale of the most destructive force humans have ever unleashed. The
16:23
Will You Travel to Space?

505 views / 0 likes - added 5 years ago

Check out Sound Field: http://youtube.com/soundfieldpbs Check out the new Space Time Merch Store! https://pbsspacetime.com/ Support Space Time on Patreon https://www.patreon.com/pbsspacetime Thanks to Matthias Rüby for on-site camera work. https://www.ins
09:04 Popular
Electrochemistry: Crash Course Chemistry #36

1,494 views / 0 likes - added 9 years ago

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.
09:14 Popular
Personhood: Crash Course Philosophy #21

824 views / 0 likes - added 7 years ago

Now that we’ve started talking about identity, today Hank tackles the question of personhood. Philosophers have tried to assess what constitutes personhood with a variety of different criteria, including genetic, cognitive, social, sentience, and the grad
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Vision: Crash Course A&P #18

1,272 views / 0 likes - added 9 years ago

Next stop in our tour of your sensory systems? VISION. With a little help from an optical illusion, we take a look inside your eyes to try to figure out how your sense of vision works -- and how it can be tricked. *** Table of Contents The Structure of th
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Integrated Circuits & Moore’s Law: Crash Course Computer Science #17

1,018 views / 0 likes - added 6 years ago

Get your first two months of CuriosityStream free by going to http://curiositystream.com/crashcourse and using the promo code “crashcourse”. So you may have heard of Moore's Law and while it isn't truly a law it has pretty closely estimated a trend we've
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Here's why cold atoms are being launched into space

492 views / 0 likes - added 6 years ago

We looked into the history and quirks of cold matter and why the International Space Station may soon be home to the coolest spot in the universe. Some graphics by freepik.com
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Why The Universe Needs Dark Energy | Space Time | PBS Digital Studios

532 views / 1 likes - added 8 years ago

Check out our sister channel Crash Course Physics to learn more about the basic foudations of Physics: https://www.youtube.com/watch?v=ZM8ECpBuQYE&list=PL8dPuuaLjXtN0ge7yDk_UA0ldZJdhwkoV Get your own Space Time t-shirt at http://bit.ly/1QlzoBi Tweet at us
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Designing A Trial: Crash Course Kids #44.1

879 views / 1 likes - added 8 years ago

It's time to design some trials. Sometimes engineers need to figure out how to test ideas. In order to do that, we need to design trials to find failure points and see how things are going to work in the real world (with gravity, wind, and human error all
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10:27
Why Human Ancestry Matters: Crash Course Big History 205

504 views / 0 likes - added 6 years ago

This week, Emily Graslie is teaching you about human ancestry and geneaology, how we got to be the species we are, and why that matters in our zoomed out look at Big History. For more information, visit the Big History Project: http://www.bighistoryprojec
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Astronauts Eat First Space Grown Salad

738 views / 1 likes - added 8 years ago

For the first time, astronauts ate fresh lettuce they'd grown from seed aboard the International Space Station. One small bite for man could be a giant leap for manned missions to Mars. Still haven’t subscribed to WIRED on YouTube? ►► http://wrd.cm/15fP7B
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Family Obligations: Crash Course Philosophy #43

766 views / 1 likes - added 7 years ago

For most of you, your parents brought you into this world. They also fed you, and changed your diapers, and wiped your tears. They raised you. Yet, according to contemporary American philosopher Jane English, once you’re grown, you don’t owe your parents
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Divine Command Theory: Crash Course Philosophy #33

717 views / 0 likes - added 7 years ago

As we venture into the world of ethics, there are a lot of different answers to the grounding problem for us to explore. One of the oldest and most popular is the divine command theory. But with age comes a long history of questions, too, such as the dile
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The First Home Consoles: Crash Course Games #5

546 views / 3 likes - added 8 years ago

So last week Andre talked about Atari’s role in the rise of the video game industry, but Atari wasn’t the only major player in the 1970s. So we’re going to step back a few years and first talk about Ralph Baer who designed the first video game console - t
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Adventure Time | Best Lumpy Space Princess Freak Out Moments | Cartoon Network

472 views / 0 likes - added 6 years ago

OH. MY. GLOB. These are the best Lumpy Space Princess freak out moments. Which one is your favorite?
03:33
What If We Never Traveled To Space?

482 views / 0 likes - added 6 years ago

Space exploration is incredibly expensive. So... why do we even do it? Watch more: Why Can't We Live On The Moon? ►► https://www.youtube.com/watch?v=wG7byaLSmFU&list=PL8L0MzSk_V6JtEDRfRMyb6rFd1acqYSlO&index=14 Subscribe: https://bit.ly/SubLifeNoggin | Get
11:15
Web Search: Crash Course AI #17

331 views / 0 likes - added 4 years ago

Today were going to talk about search engines, which are just AI systems that try to help us find what were looking for. Search engines can be the sort that serve up a list of results, like during a Google or Bing search, using web crawlers, an inverted i
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The Mind/Brain: Crash Course History of Science #30

288 views / 0 likes - added 4 years ago

Scientists in the nineteenth century discovered a lot about life and matter. But exactly what kind of stuff is the human brain? That one wasand istricky.The brain scienceswith experiments and therapies tied to biological theories of the bodyemerged in the
08:54
Poverty & Our Response To It: Crash Course Philosophy #44

658 views / 2 likes - added 7 years ago

We’re picking up where we left off last time, exploring the “ethics of care” and how it applies to extreme poverty. Are we responding to global poverty in a moral way? Philosophers like Peter Singer argue that we have an obligation to prevent harm caused
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Why Florida Is So Perfect For Space Launches

940 views / 0 likes - added 7 years ago

For about 60 years, the U.S. has launched its rockets into space from Cape Canaveral. What makes Florida so perfect for space launches? Why Rocket Launches Always Get Cancelled - https://youtu.be/TzTU-ZfjQlE Sign Up For The Seeker Newsletter Here - http:/
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Chi-Square Tests: Crash Course Statistics #29

373 views / 0 likes - added 4 years ago

Today we're going to talk about Chi-Square Tests - which allow us to measure differences in strictly categorical data like hair color, dog breed, or academic degree. We'll cover the three main Chi-Square tests: goodness of fit test, test of independence,
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Degrees of Freedom and Effect Sizes: Crash Course Statistics #28

401 views / 1 likes - added 4 years ago

Today we're going to talk about degrees of freedom - which are the number of independent pieces of information that make up our models. More degrees of freedom typically mean more concrete results. But something that is statistically significant isn't alw
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Introduction to the Null Space of a Matrix

683 views / 0 likes - added 9 years ago

Showing that the Null Space of a Matrix is a valid Subspace More free lessons at: http://www.khanacademy.org/video?v=jCwRV1QL_Xs
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Absolute Monarchy: Crash Course European History #13

746 views / 0 likes - added 4 years ago

So far, the rulers of Europe have been working to consolidate their power and expand their kingdoms, and this is it. The moment they've been working toward: Absolute Monarchy. We're going to learn about how kings and queens became absolute rulers in Europ
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100 Years of Solitude Part 1: Crash Course Literature 306

640 views / 1 likes - added 7 years ago

Our first of two episodes about Gabriel Garcia Marquez's novel, 100 Years of Solitude. This week, we're looking at the Buendia family, and their many generations of people with the same names. We'll also look at the fascinating way the author thinks about
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Darwin and Natural Selection: Crash Course History of Science #22

779 views / 0 likes - added 4 years ago

"Survival of the Fittest" sounds like a great WWE show but today we're talking about that phrase as it relates to Charles Darwin and Alfred Wallace. Darwin and Wallace are at the heart of understanding evolution and natural selection. Today, Hank talks ab
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NASA's Twin Space Experiment Explained | WIRED

488 views / 0 likes - added 5 years ago

NASA's Scott Kelly spent a year on board the International Space Station to test the effects of space travel on his body, while his identical twin and fellow astronaut Mark Kelly remained on earth. WIRED's Robbie Gonzalez speaks with Dr. Francine Garrett-
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Climate Change: Crash Course Kids #41.2

1,412 views / 6 likes - added 8 years ago

How does climate change? And what happens to environments and ecosystems when it does? In this episode of Crash Course Kids, Sabrina shows us the effects that climate change can have and how one small change in an ecosystem can throw everything off. Watch
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The Singularity, Skynet, and the Future of Computing: Crash Course Computer Science #40

537 views / 0 likes - added 6 years ago

In our SERIES FINALE of Crash Course Computer Science we take a look towards the future! In the past 70 years electronic computing has fundamentally changed how we live our lives, and we believe it’s just getting started. From ubiquitous computing, artifi
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Copyright, Exceptions, And Fair Use: Crash Course Intellectual Property #3

729 views / 0 likes - added 9 years ago

Stan Muller teaches you a few things about copyright enforcement, and talks about the exceptions to copyright enforcement. While there are several, the one you've probably heard of is Fair Use, and it's a pretty tricky one. We'll try to explain it, and te
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The Scientific Methods: Crash Course History of Science #14

738 views / 0 likes - added 4 years ago

Historically speaking, there is no one scientific method. Theres more than one way to make knowledge. In this episode we're going to look at a few of those ways and how they became more of the "norm."***Crash Course is on Patreon! You can support us direc
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How To Draw A Space Kitten Astronaut

249 views / 0 likes - added 1 year ago

Hey, Art Friends! Get ready for a space adventure with Olivia and me! In this fun new lesson, we're teaching you how to draw an adorable space kitten astronaut. Our cute little cat friend is all decked out in her astronaut gear, ready to explore space! An
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(LEGO) Block Party: Crash Course Kids #23.2

1,021 views / 0 likes - added 8 years ago

Playing with LEGOS is fun. But, they can also teach us something about matter. In this episode of Crash Course Kids, Sabrina chats about chemical reactions and the Conservation of Matter. Watch More Crash Course Kids: https://www.youtube.com/user/crashcou
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Should We Keep the Hubble Telescope Alive or Let It Crash and Burn?

528 views / 0 likes - added 6 years ago

The shiny, new James Webb Space Telescope is scheduled to launch soon, but what’s going to happen to Hubble? How Big Do You Think This Spacecraft Is? Guess Again... - https://youtu.be/CRe7G7WMj0Q Read More: How Will the Hubble Space Telescope Die? https:/
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The Impacts of Social Class: Crash Course Sociology #25

568 views / 0 likes - added 6 years ago

This week we are building on last week’s outline of American stratification to explore how class differences affect people’s daily lives. We’ll explore variations in everything from values & beliefs to health outcomes, and look at how these things can per
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How Do Spacesuits Keep Astronauts Safe From The Vacuum Of Space?

683 views / 0 likes - added 8 years ago

There were many iterations of the spacesuit before astronauts started wearing what they do today, but how do they work? How Do Astronauts Poop in Space? ►►►► http://bit.ly/1SBdlNe Sign Up For The TestTube Newsletter Here ►►►► http://bit.ly/1myXbFG Read Mo
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Joints: Crash Course A&P #20

974 views / 0 likes - added 9 years ago

We continue our look at your bones and skeletal system, skipping over the silly kid's song in favor of a more detailed look at your your axial and appendicular skeleton. This episode also talks about the structural and functional classifications of your j
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LARP: Crash Course Games #26

466 views / 0 likes - added 7 years ago

Today we’re going to talk about LARPs or live action role-playing games. Larping tends to conjure up the image of a bunch of nerds hitting each other with foam weapons but it’s much more than that. LARPs merge performance, community, and art in a way that
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How Voters Decide: Crash Course Government And Politics #38

732 views / 0 likes - added 8 years ago

So today, Craig is going to try to get inside the heads of voters by discussing how voters make decisions. Now obviously, like all decision making, voter decisions are influenced by a multitude of factors, but the three we are going to focus on today (and
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Orbitals: Crash Course Chemistry #25

891 views / 0 likes - added 9 years ago

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
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Money&Debt: Crash Course World History 202

914 views / 0 likes - added 9 years ago

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
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Yes, scientists are actually building an elevator to space - Fabio Pacucci

894 views / 1 likes - added 2 years ago

Explore the physics behind space elevators, which would theoretically use a cable anchored to Earth and extending into space. --Sending rockets into space requires sacrificing expensive equipment, burning massive amounts of fuel, and risking potential cat
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Regular Show | Space Carts | Cartoon Network

542 views / 0 likes - added 7 years ago

Mordecai and Rigby take some space carts on a joy ride and wonder whether or not they'll be stuck in space forever. CN GAMES: http://bit.ly/CNGames SUBSCRIBE: http://bit.ly/109Y6wq WATCH MORE: http://bit.ly/CNRegularShow About Regular Show: Best friends,
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Mission DreamStar Lets Go To SPACE! | Barbie You Can Be Anything

854 views / 2 likes - added 2 years ago

Shoot for the stars with Barbie and some NASA astronauts! These out-of-this-world role models take you onboard the International Space Station to give you a glimpse of life in space! You’ll see their view from space, how they grow food, and the robo
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Exercise: Crash Course Study Skills #10

679 views / 0 likes - added 6 years ago

We’re finally to the end of our time together here on Crash Course Study Skills, so this week we’re taking a more holistic approach to being the best learner you can. Part of taking care of your brain is taking care of your whole body, of which your brain
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Spaced Out: Crash Course Kids #25.1

758 views / 2 likes - added 8 years ago

So... how big is the Universe? It's big... really big... no, bigger than that... it's big. In this episode of Crash Course Kids, Sabrina gives us some perspective on this whole Universe thing and how we fit into it. Watch More Crash Course Kids: https://w
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Could Asteroid Mining Fuel Deep Space Travel?

486 views / 1 likes - added 5 years ago

If we want to travel to and live on other worlds, asteroids may provide the right resources for life in deep space. Watch More Space Crafts! | https://bit.ly/2w0YKD1 Read More: NASA Moves Up Launch of Psyche Mission to a Metal Asteroid https://www.jpl.nas
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The Central Processing Unit (CPU): Crash Course Computer Science #7

1,140 views / 0 likes - added 7 years ago

Take the 2017 PBS Digital Studios Survey: http://surveymonkey.com/r/pbsds2017. Today we’re going to build the ticking heart of every computer - the Central Processing Unit or CPU. The CPU’s job is to execute the programs we know and love - you know like G
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Stock Market Crash of 1929: The Great Depression

931 views / 1 likes - added 2 years ago

History and lessons from the 1929 stock market crash.
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Dark Energy, Cosmology Part 2: Crash Course Astronomy #43

619 views / 0 likes - added 8 years ago

The majority of the universe is made up of a currently mysterious entity that pervades space: dark energy. We don’t know exactly what it is, but we do know that dark energy accelerates the expansion of space. We think this means the Universe will expand f
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OCD&Anxiety Disorders: Crash Course Psychology #29

905 views / 0 likes - added 9 years ago

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.
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Intro to Psychology - Crash Course Psychology #1

1,009 views / 0 likes - added 9 years ago

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.
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Lymphatic System: Crash Course A&P #44

1,691 views / 0 likes - added 8 years ago

Today Hank explains your unsung lymphatic system and how it supports cardiovascular function by collecting, filtering, and returning interstitial fluid back into the bloodstream via a system of lymphatic vessels. He also explains the system’s major role i
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The End of Civilization (In the Bronze Age): Crash Course World History 211

871 views / 1 likes - added 9 years ago

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
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What Happens When Your Body Is Exposed To Space? Myths Debunked

448 views / 1 likes - added 5 years ago

It's depicted in so many different ways on the TV and in movies but what really happens to the human body when it's exposed to the vacuum of space. Do your eyes pop out, does your blood boil, do you suffocate or do you explode? Let's find out...
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Einstein's Revolution: Crash Course History of Science #32

338 views / 0 likes - added 4 years ago

There was physics before Einstein in the same way that there was biology before Darwin. Einstein didnt just add some new ideas to physics. And he didnt just add a unifying framework for doing physics, like Newton. Einstein took what people thought was phy
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Why Star Stuff Matters: Crash Course Big History 202

577 views / 0 likes - added 7 years ago

So, the stars made the elements, we're all made of star stuff, etc. But what does all this mean? This week Emily Graslie teaches you how the formation of chemical elements in the bellies of the earliest stars made life as we know it possible. Namely, we'l
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You Know I'm All About that Bayes: Crash Course Statistics #24

366 views / 0 likes - added 4 years ago

Today were going to talk about Bayes Theorem and Bayesian hypothesis testing. Bayesian methods like these are different from how we've been approaching statistics so far, because they allow us to update our beliefs as we gather new information - which is
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Training Neural Networks: Crash Course AI #4

313 views / 0 likes - added 4 years ago

Today were going to talk about how neurons in a neural network learn by getting their math adjusted, called backpropagation, and how we can optimize networks by finding the best combinations of weights to minimize error. Then well send John Green Bot into
12:17
Why Early Globalization Matters: Crash Course Big History #206

621 views / 0 likes - added 6 years ago

Globalization has been in process for centuries, and has had a huge effect on Big History, and on Collective Learning. This week, Emily is investigating early globalization through three things that moved around the world and shaped collective learning in
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Null Space 3: Relation to Linear Independence

671 views / 0 likes - added 9 years ago

Understanding how the null space of a matrix relates to the linear independence of its column vectors More free lessons at: http://www.khanacademy.org/video?v=vFctYRhK2M0
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Patents, Novelty, And Trolls: Crash Course Intellectual Property #4

1,416 views / 0 likes - added 9 years ago

This week, Stan teaches you about patents. It turns out, they're patently complicated! So, patents have some similarity to copyright, in that they grant a limited monopoly to people who invent things. The key difference in patents and copyright is that pa
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The Basics Of Freshwater: Crash Course Kids 14.1

1,982 views / 6 likes - added 9 years ago

We have a lot of water on Earth, but we also can't actually drink much of it... or use it for farming. That's because most of the water on Earth is saltwater. We humans, like a lot of living things, need freshwater to survive. In this episode of Crash Cou
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Luther and the Protestant Reformation: Crash Course World History #218

1,005 views / 4 likes - added 9 years ago

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
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Yuri Gagarin, First Human in Space (1961)

629 views / 2 likes - added 6 years ago

Please consider supporting our videos on Patreon https://www.patreon.com/simplehistory At age 27 on the morning of 12 April 1961, cosmonaut Yuri Gagarin, was helped into his spacesuit and made his way to the launch pad. He climbed into the Vostok spacecra
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Space School- Earth

784 views / 1 likes - added 9 years ago

A fragile blue marble floating through space, Earth may seem small, but is unlike any planet ever discovered. Home to millions of species, including humans, the Earth remains a complex and fragile planet, unique in almost every way.
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What If You Fell From Space to Earth?

446 views / 0 likes - added 6 years ago

If you fell from space, what would happen to your body? The first 200 people to sign up get 20% off Brilliant: https://brilliant.org/lifenoggin/ Subscribe: https://bit.ly/SubLifeNoggin | Get your exclusive Life Noggin merch: http://keeponthinking.co Suppo
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The Olympics, FIFA, and why we love sports: Crash Course Games #17

625 views / 1 likes - added 7 years ago

Today, John Green is going to be your substitute teacher as we dive into the world of sports! Now “sports” is a pretty broad genre of game, we probably couldn’t even cover them in an entire series, but today we’re going to do our best to look at the origi
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Utilitarianism: Crash Course Philosophy #36

1,113 views / 1 likes - added 7 years ago

Our next stop in our tour of the ethical lay of the land is utilitarianism. With a little help from Batman, Hank explains the principle of utility, and the difference between act and rule utilitarianism. Get your own Crash Course Philosophy mug or Chom Ch
03:49 Popular
Constellation Location: Crash Course Kids #31.2

945 views / 2 likes - added 8 years ago

Let's say you're looking for a specific constellation in the sky, but can't find it? That could be because you're on the wrong part of the planet to see it. In this episode of Crash Course Kids, Sabrina talks about how the Earth's rotation and axis can af
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08:59
Studying for Exams: Crash Course Study Skills #7

495 views / 0 likes - added 6 years ago

It turns out that saving all of your studying until after midnight on the night before your big exam is not actually a great way to prepare. Today, Thomas explains some test prep strategies that actually work. Crash Course is made with Adobe Creative Clou
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Compression: Crash Course Computer Science #21

1,393 views / 0 likes - added 6 years ago

Get your first two months of CuriosityStream free by going to http://curiositystream.com/crashcourse and using the promo code “crashcourse”. So last episode we talked about some basic file formats, but what we didn’t talk about is compression. Often files
03:44
An Introduction to the James Webb Space Telescope Mission

223 views / 0 likes - added 2 years ago

A look at the James Webb Space Telescope, its mission and the incredible technological challenge this mission presents. Credit: NASA's Goddard Space Flight Center Michael McClare (KBRwyle): Lead Producer Michael McClare (KBRwyle): Lead Writer Adriana Manr
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Why Human Evolution Matters: Crash Course Big History 204

709 views / 0 likes - added 6 years ago

This week on Crash Course Big History, Emily is talking about process of human evolution, and the knack for innovation that has allowed humans to become so dominant on the Earth. Human innovation, and the ability to build on those innovations generation a
04:52
You Don’t Even Want To Know About Bacteria On The Space Station

612 views / 0 likes - added 7 years ago

Think the ISS is squeaky clean...think again! Bacteria like Staphylococcaceae and Enterobacteriaceae absolutely thrive in space stations! Get 15% off http://www.domain.com domain names and web hosting when you use coupon code DNEWS at checkout! Where Are
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Respiratory System, Part 1: Crash Course A&P #31

1,253 views / 2 likes - added 8 years ago

So we all know that breathing is pretty important, right? Today we're going to talk about how it works, starting with the nameless evolutionary ancestor that we inherited this from, and continuing to the mechanics of both simple diffusion and bulk flow, a
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Equilibrium: Crash Course Chemistry #28

1,191 views / 0 likes - added 9 years ago

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
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Astronaut Plays Flute on Space Station

206 views / 0 likes - added 2 years ago

Flight Engineer Cady Coleman demonstrates playing a flute on the International Space Station during an interview with National Public Radio's "All Things Considered." Credit: NASA/NPR
24:49
Stability Analysis, State Space - 3D visualization

432 views / 0 likes - added 5 years ago

Introduction to Stability and to State Space. Visualization of why real components of all eigenvalues must be negative for a system to be stable. My Patreon page is at https://www.patreon.com/EugeneK
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H2O-NO! - Fresh Water Problems: Crash Course Kids #33.1

1,104 views / 2 likes - added 8 years ago

What happens to a single ecosystem when the amount of freshwater available in it changes? Not really much good. In this episode of Crash Course Kids, Sabrina talks about ecosystems and how one small change can lead to a cascade effect in the entire ecosys
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Measurement Mystery: Crash Course Kids #9.2

1,059 views / 0 likes - added 9 years ago

So now that we know what Properties are, how can we use them to figure things out? In this episode of Crash Course Kids, Sabrina uses them to solve the mystery of what she tripped over last night. This first series is based on 5th grade science. We're sup
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3D Graphics: Crash Course Computer Science #27

675 views / 0 likes - added 6 years ago

Today we’re going to discuss how 3D graphics are created and then rendered for a 2D screen. From polygon count and meshes, to lighting and texturing, there are a lot of considerations in building the 3D objects we see in our movies and video games, but th
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Graphical User Interfaces: Crash Course Computer Science #26

662 views / 0 likes - added 6 years ago

Today, we're going to discuss the critical role graphical user interfaces, or GUIs played in the adoption of computers. Before the mid 1980's the most common way people could interact with their devices was through command line interfaces, which though ef
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Big Data Problems: Crash Course Statistics #39

423 views / 0 likes - added 4 years ago

There is a lot of excitement around the field of Big Data, but today we want to take a moment to look at some of the problems it creates. From questions of bias and transparency to privacy and security concerns, there is still a lot to be done to manage t
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Weather Vs. Climate: Crash Course Kids #28.1

2,313 views / 5 likes - added 8 years ago

So we have Weather and Climate... but are they the same thing? No, no they are not. But they are both super important to how the geosphere is shaped. In this episode of Crash Course Kids, Sabrina chats with us about the differences between Weather and Cli
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Existentialism: Crash Course Philosophy #16

805 views / 0 likes - added 8 years ago

Now that we’ve left behind the philosophy of religion, it’s time to start exploring what other ways might exist to find meaning in the world. Today we explore essentialism and its response: existentialism. We’ll also learn about Jean-Paul Sartre and his i
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What On Earth: Crash Course Kids #10.1

1,306 views / 2 likes - added 9 years ago

We've already talked about how the Earth is divided into four spheres (The Hydrosphere, the Biosphere, the Geosphere, and the Atmosphere). But, how do these different sphere interact with each other? In this episode of Crash Course Kids, Sabrina chats wit
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Digestive System, Part 3: Crash Course A&P #35

930 views / 1 likes - added 8 years ago

Nachos are great...if you are among the lucky ones whose body can digest them. When digestion goes according to plan, the small intestine performs most of your chemical digestion in the duodenum, while accessory organs including the liver, gallbladder, an
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The Normal Distribution: Crash Course Statistics #19

1,168 views / 0 likes - added 4 years ago

Today is the day we finally talk about the normal distribution! The normal distribution is incredibly important in statistics because distributions of means are normally distributed even if populations aren't. We'll get into why this is so - due to the Ce
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The Cold War: Crash Course US History #37

927 views / 3 likes - added 9 years ago

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
14:28
1984 by George Orwell, Part 1: Crash Course Literature 401

615 views / 1 likes - added 6 years ago

In which John Green returns for a dystopian new season of Crash Course Literature! We're starting with George Orwell's classic look at the totalitarian state that could be in post-war England. Winston Smith is under the eye of Big Brother, and making us t
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Work, Energy, And Power: Crash Course Physics #9

1,382 views / 0 likes - added 8 years ago

When you hear the word, "Work," what is the first thing you think of? Maybe sitting at a desk? Maybe plowing a field? Maybe working out? Work is a word that has a little bit of a different meaning in Physics and today, Shini is going to walk us through it
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Sesame Street: Outer Space ABC's

832 views / 0 likes - added 9 years ago

Travel through space faster than you can say your ABC's. Or at about the same pace it takes to say your ABC's. Either way, learning the alphabet is totally awesome in outer space. Subscribe to the Sesame Street Channel here: http://www.youtube.com/subscri
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Precipitation Reactions: Crash Course Chemistry #9

673 views / 0 likes - added 9 years ago

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
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Contractarianism: Crash Course Philosophy #37

672 views / 0 likes - added 7 years ago

Today we explore the penultimate ethical theory in this unit: contractarianism. Hank explains Hobbes’ state of nature, and implicit and explicit contracts, as well as the Prisoner’s Dilemma, and the benefits, and costs, of violating contracts. Get your ow
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Unsupervised Machine Learning: Crash Course Statistics #37

333 views / 0 likes - added 4 years ago

Today we're going to discuss how machine learning can be used to group and label information even if those labels don't exist. We'll explore two types of clustering used in Unsupervised Machine Learning: k-means and Hierarchical clustering, and show how t
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Artificial Intelligence & Personhood: Crash Course Philosophy #23

742 views / 0 likes - added 7 years ago

Today Hank explores artificial intelligence, including weak AI and strong AI, and the various ways that thinkers have tried to define strong AI including the Turing Test, and John Searle’s response to the Turing Test, the Chinese Room. Hank also tries to
04:01
Life Aboard the International Space Station

327 views / 0 likes - added 3 years ago

From 250 miles above the Earths surface, NASA astronaut Anne McClain has a unique perspective. Subscribe so you never miss an episode: https://bit.ly/3mOfd77More info below Circling the planet 16 times a day aboard the International Space Station, NASA as
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Saturn: Crash Course Astronomy #18

1,059 views / 6 likes - added 9 years ago

Saturn is the crown jewel of the solar system, beautiful and fascinating. It is a gas giant, and has a broad set of rings made of ice particles. Moons create gaps in the rings via their gravity. Saturn has dozens of moons, including Titan, which is as big
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Reinforcement Learning: Crash Course AI#9

357 views / 1 likes - added 4 years ago

Reinforcement learning is particularly useful in situations where we want to train AIs to have certain skills we dont fully understand ourselves. Unlike some of the techniques weve discussed so far, reinforcement learning generally only looks at how an AI
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Material World: Crash Course Kids #40.1

1,447 views / 0 likes - added 8 years ago

So, we know what materials are, but can we make new materials? Or improve the materials we already have? In this episode of Crash Course Kids, Sabrina shows us how Material Scientists are working on these two things today. Also, your cell phone holds the
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The Problem Of Evil: Crash Course Philosophy #13

728 views / 0 likes - added 8 years ago

After weeks of exploring the existence of nature of god, today Hank explores one of the biggest problems in theism, and possibly the biggest philosophical question humanity faces: why is there evil? -- Images and video via VideoBlocks or Wikimedia Commons
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Bonding Models and Lewis Structures: Crash Course Chemistry #24

712 views / 0 likes - added 9 years ago

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
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Glow On: Crash Course Kids #20.2

1,077 views / 3 likes - added 8 years ago

So, have you ever wondered why some stars are brighter than others? You might think it's because they're closer to us, but that's not the whole story? In this episode of Crash Course Kids, Sabrina chats about how stars glow and how astronomers judge their
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Parasympathetic Nervous System: Crash Course A&P #15

1,127 views / 1 likes - added 9 years ago

This week we are looking at your parasympathetic division, which is the "resting and digesting" unit. Unfortunately, learning about this de-stressing division also involves a whole lot of memorization. Don't worry, though - we've got some mnemonic devices
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Supervised Learning: Crash Course AI #2

316 views / 0 likes - added 4 years ago

Today were going to teach John Green Bot how to tell the difference between donuts and bagels using supervised learning! Supervised learning is the process of learning WITH training labels, and is the most widely used kind of learning with it comes to AI
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What Will the James Webb Space Telescope See Out There?

167 views / 0 likes - added 2 years ago

What is the most complex space telescope ever built all about? Join Museum astrophysicist Jackie Faherty and Director of Astrovisualization Carter Emmart for this special look at the James Webb Space Telescope (JWST). Expected to launch in late December,
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Fabulous Food Chains: Crash Course Kids #7.1

1,440 views / 4 likes - added 9 years ago

Everyone eats, right? But how does that food get the energy to power you? In this episode of Crash Course Kids, Sabrina talks about the way energy moves, or flows, through an ecosystem and how that movement forms Food Chains! This first series is based on
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Super Stars (Constellations): Crash Course Kids #31.1

1,288 views / 0 likes - added 8 years ago

So, you know about stars. But what if those stars formed a super group like The Avengers? Well, then you have a Constellation! In this episode of Crash Course Kids, Sabrina chats about stars, constellations, and how humans have used constellations to tell
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11:20
Algorithmic Bias and Fairness: Crash Course AI #18

283 views / 1 likes - added 4 years ago

Check out my collab with "Above the Noise" about Deepfakes: https://www.youtube.com/watch?v=Ro8b69VeL9UToday, we're going to talk about five common types of algorithmic bias we should pay attention to: data that reflects existing biases, unbalanced classe
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Procrastination: Crash Course Study Skills #6

689 views / 0 likes - added 6 years ago

You’re on YouTube right now, but you should probably be studying or writing that research paper. But as long as you’re here, we’re going to help you figure out how to get the better of your desire to procrastinate in the future. Just don’t forget about us
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Measuring Personality: Crash Course Psychology #22

1,042 views / 1 likes - added 9 years ago

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.
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What Exists In The Dark Space Between Solar Systems?

670 views / 0 likes - added 8 years ago

Many people think that space is a vacuum, but that’s actually a misconception. What exactly exists between solar systems? Is This the Creepiest Satellite That's Ever Flown? ►►►►http://bit.ly/1NQANPm Sign Up For The TestTube Newsletter Here ►►►► http://bit
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Danger! Falling Objects: Crash Course Kids #32.1

1,317 views / 1 likes - added 8 years ago

So, what would happen if you dropped a hammer and a feather at the same time, from the same height? Well, the hammer would hit the ground first, right? But why? You might think it's because the hammer is heavier, or has more mass than the feather. But it'
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10:06
Vectors And 2D Motion: Crash Course Physics #4

648 views / 0 likes - added 8 years ago

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 tw
11:48
Marie Curie and Spooky Rays: Crash Course History of Science #31

634 views / 3 likes - added 4 years ago

It's time to talk about one of the most awesome scientists that has ever been awesome: Marie Curie. She figured out ways to get an amazing education despite the limitations of her homeland, discovered some really important answers to the question "what is
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Meet the Guy Who Built His Own Space Suit | WIRED

823 views / 0 likes - added 6 years ago

As a kid Cameron Smith dreamed of becoming an astronaut but his eyesight keep him out of the pilot's seat. Now he's an anthropologist in Portland, Oregon, where he's spent the last decade building a fully functional homemade space suit. Still haven’
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Look Who's Talking: Crash Course Kids #27.2

930 views / 0 likes - added 8 years ago

Plants! We absolutely depend on them. Oxygen, food, and looking super nice to boot! But, plants have a lot more going on than meets the eye. How do we know that? Investigations and Experimentations! Watch More Crash Course Kids: https://www.youtube.com/us
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What's Matter? - Crash Course Kids #3.1

3,112 views / 12 likes - added 9 years ago

Hey... what's matter? No no no, not what's THE matter. What's MATTER? In this episode of Crash Course Kids, Sabrina talks about what matter is and the three states of matter: Solid, Liquid, and Gas. She also does a quick experiment that you can do at home
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How To Argue - Induction & Abduction: Crash Course Philosophy #3

810 views / 1 likes - added 8 years ago

We continue our look at philosophical reasoning by introducing two more types: induction and abduction. Hank explains their strengths and weaknesses, as well as counterarguments and the Socratic method. -- Images and video via VideoBlocks or Wikimedia Com
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Ecological Succession: Change Is Good - Crash Course Ecology #6

1,996 views / 0 likes - added 8 years ago

In the world of ecology, the only constant is change - but change can be good. Today Hank explains ecological succession and how ecological communities change over time to become beautiful, biodiverse mosaics. Like Crash Course on Facebook! http://www.fac
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Congressional Decisions: Crash Course Government and Politics #10

639 views / 0 likes - added 9 years ago

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
02:48
The First Prank in Outer Space | WHAT THE PAST?

251 views / 1 likes - added 3 years ago

The silly story of the first prank ever pulled... IN SPACE!!Images used under license from Shutterstock.comNarrated by: Kayla RosenbergWritten & Directed by: Matt LevyEdited & Animated by: Anton MakarauExecutive Producer: Judy Meyers
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Aesthetic Appreciation: Crash Course Philosophy #30

788 views / 0 likes - added 7 years ago

Today we are talking about art and aesthetic appreciation. What makes something an artwork? Can art really be defined? Is aesthetic value is objective or subjective? Can taste be developed? How? Get your own Crash Course Philosophy mug or Chom Chom shirt
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Stress In Space - Judging An Astronaut's Mental State

529 views / 0 likes - added 8 years ago

Being an astronaut is stressful. But astronauts aren’t the best at admitting when they’re feeling the strain. An innovative research project uses speech analysis to spot hints of underlying anxieties. Day 19 of our advent calendar, A Place Called Space ht
08:54
MMORPGs - Crash Course Games #12

614 views / 0 likes - added 7 years ago

So we ended the last episode with casual gaming and a more connected gaming community, but these connected communities started much before smartphones and Facebook. Today, we’re going to talk about MMORPGs - or Massively Multiplayer Online Role Playing Ga
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Chiral Molecules From Outer Space

724 views / 0 likes - added 8 years ago

First mirror image molecule spotted in interstellar space. Read more: http://scim.ag/1UsLb6i Read the paper: http://scim.ag/1YpPj8Q
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The 2008 Financial Crisis: Crash Course Economics #12

645 views / 0 likes - added 8 years ago

Today on Crash Course Economics, Adriene and Jacob talk about the 2008 financial crisis and the US Goverment's response to the troubles. So, all this starts with home mortgages, and the use of mortgages as an investment instrument. For years, it seemed li
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Cybersecurity: Crash Course Computer Science #31

669 views / 0 likes - added 6 years ago

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, biom
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Grip and Electric: Crash Course Film Production #10

557 views / 0 likes - added 6 years ago

It's time to look at some of the most under-sung heroes of the film world, Grip and Electric. Doing everything from setting up dollies and tripods, to helping the cinematographer shape the light with flags and silks, the Grips are there to make it work pr
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How To Argue - Philosophical Reasoning: Crash Course Philosophy #2

900 views / 0 likes - added 8 years ago

Before we dive into the big questions of philosophy, you need to know how to argue properly. We’ll start with an overview of philosophical reasoning and breakdown of how deductive arguments work (and sometimes don’t work). -- Images and video via VideoBlo
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Is Quantum Tunneling Faster Than Light? | Space Time | PBS Digital Studios

631 views / 0 likes - added 8 years ago

Start your Audible trial today: http://www.audible.com/spacetime Hello from the other side. In this episode find out how quanta can can move through solid objects. Get your own Space Time tshirt at http://bit.ly/1QlzoBi Tweet at us! @pbsspacetime Faceboo
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Severe Weather: Crash Course Kids #28.2

1,922 views / 5 likes - added 8 years ago

So, what's the difference between "weather" and "severe weather"? Is it just how hard the wind is blowing? Is it just thunder and lighting? Well, it can be some or all of those things. In this episode of Crash Course Kids, Sabrina talks to us about what m
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Why No Polar Pineapples: Crash Course Kids #11.2

1,082 views / 0 likes - added 9 years ago

Plants are amazing. Really! Photosynthesis is an incredible thing. But it also means that some plants can't live everywhere. They need to get the right amount of sunlight for the right amount of time. In this episode of Crash Course Kids, Sabrina chats ab
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Introduction: Crash Course U.S. Government and Politics

820 views / 0 likes - added 9 years ago

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
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Bayes in Science and Everyday Life: Crash Course Statistics #25

371 views / 0 likes - added 4 years ago

Today we're going to finish up our discussion of Bayesian inference by showing you how we can it be used for continuous data sets and be applied both in science and everyday life. From A/B testing of websites and getting a better understanding of psycholo
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Water Fight!: Crash Course Kids #36.1

1,529 views / 1 likes - added 8 years ago

So, what happens when there's not enough water? Well... not good things. Do we let homes have more water for showering and cooking? Or do we let farms have the water for growing crops? There aren't any easy solutions, but today Sabrina chats with us about
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Intro to Big Data: Crash Course Statistics #38

412 views / 0 likes - added 4 years ago

Today, we're going to begin our discussion of Big Data. Everything from which videos we click (and how long we watch them) on YouTube to our likes on Facebook say a lot about us - and increasingly more and more sophisticated algorithms are being designed
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Interest Groups: Crash Course Government And Politics #42

748 views / 0 likes - added 8 years ago

Today, Craig is going to talk about something you fans out there have been demanding for months - money in politics. Specifically, we're going to talk about special interest groups and their role in the U.S. political system. Special interest groups are g
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Natural Language Processing: Crash Course AI #7

486 views / 0 likes - added 4 years ago

For more information go to https://curiositystream.com/crashcourse So far in this series, we've mostly focused on how AI can interpret images, but one of the most common ways we interact with computers is through language - we type questions into search e
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Hunting For Properties: Crash Course Kids #9.1

797 views / 1 likes - added 9 years ago

Remember pre-school? If not, IT WAS SO MUCH EASIER! But when you were stacking blocks and figuring out which block went into which shaped hole, you were learning about properties. In this episode of Crash Course Kids, Sabrina talks about what properties a
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Liquids: Crash Course Chemistry #26

751 views / 1 likes - added 9 years ago

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
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Metabolism & Nutrition, Part 2: Crash Course Anatomy & Physiology #37

1,607 views / 0 likes - added 8 years ago

If you're like us, you love the sound of a brunch buffet. But not everything you eat at that glorious buffet is going to be turned into energy. Your body has to work with different forms of food in different ways. In this episode of Crash Course Anatomy &
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Controlling Bureaucracies: Crash Course Government And Politics #17

650 views / 0 likes - added 9 years ago

In which Craig Benzine tells you how we keep bureaucracy in check. So we've spent the last few episodes telling you all about what bureaucracies are and why they are formed. And throughout we've hinted about this ever-expanding power within the executive
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Vegetation Transformation: Crash Course Kids #5.2

1,110 views / 0 likes - added 9 years ago

Have you ever seen a magic trick where one thing changes to another thing? Well, that's nothing compared to what plants can do through a process called photosynthesis. In this episode, Sabrina talks about how photosynthesis works! This first series is bas
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Mythical Mountains: Crash Course World Mythology #33

933 views / 0 likes - added 6 years ago

Our mythical places series continues, and this week Mike Rugnetta is talking about some stories that revolve around mountains. Mountains loom large in human stories, not least because mountains are, well, large. So ascend with us to the lofty peaks of The
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Weathering And Erosion: Crash Course Kids #10.2

3,383 views / 10 likes - added 9 years ago

In this episode of Crash Course Kids, Sabrina gives us a real world example of how the Hydrosphere and Geosphere affect each other in the form of Weathering and Erosion. Think of Weathering as the force that makes a mess and Erosion as the force that clea
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Seasons And The Sun: Crash Course Kids 11.1

2,260 views / 1 likes - added 9 years ago

Updated with graphics fixed. Thanks for pointing that out! Ever wonder why we have seasons? A lot of people think it's because the Earth gets further away from the sun in winter, and closer in the summer. But, it's actually more interesting than that. In
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Every Kind of Thing in Space Mapped

342 views / 0 likes - added 3 years ago

Space in infinitely big with infinite stuff in it, but buy using the power of categorisation I can fit it all into a 12 minute video. Grab the poster here: https://store.dftba.com/collections/domain-of-science/products/the-universe-posterThis video explor
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Pitching and Pre-Production: Crash Course Film Production #2

552 views / 0 likes - added 6 years ago

Pitching your movie to people can be hard. A studio, a friend, your mom... each of these entities will have different stressed and give you different results. But, what's important in a pitch? And what happens after the pitch? How do you get your movie re
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Copyright Basics: Crash Course Intellectual Property 2

827 views / 0 likes - added 9 years ago

EPISODE DESCRIPTION This week, Stan Muller teaches you the basics of copyright in the United States. Copyright law is territorial, so we're going to cover the system we know the most about, and that's the US. Stan will talk about what kind of ideas can be
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Animal Astronauts - The Space Race's Unwitting Pioneers

476 views / 0 likes - added 5 years ago

Everyone remembers Yuri Gagarin the first man in space but before his famous flight there had been many more living space pioneers who didn’t really have any choice about being strapped in to an experimental rocket. Patreon : https://www.patreon.com/curio
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Deep Time: Crash Course Astronomy #45

734 views / 0 likes - added 8 years ago

As we approach the end of Crash Course Astronomy, it’s time now to acknowledge that our Universe’s days are numbered. Stars will die out after a few trillion years, protons will decay and matter will dissolve after a thousand trillion trillion trillion ye
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Star Personalities: Crash Course Kids #25.2

748 views / 0 likes - added 8 years ago

Down here, on Earth, if you look up at the night sky, it seems like all the stars up there look the same. Or maybe at least similar. But, it turns out that stars are very different and we shouldn't stereotype them. Some are bigger, some burn through their
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Italian and German Unification: Crash Course European History #27

580 views / 0 likes - added 4 years ago

So, we haven't talked much about Italy and Germany so far in Crash Course Euro, and that's because prior to the mid-19th century, those two nation-states weren't really a thing. Today we'll look at how Italy and Germany pulled it together in the second ha
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Keyboards & Command Line Interfaces: Crash Course Computer Science #22

694 views / 0 likes - added 6 years ago

Today, we are going to start our discussion on user experience. We've talked a lot in this series about how computers move data around within the computer, but not so much about our role in the process. So today, we're going to look at our earliest form o
09:23
Political Parties: Crash Course Government And Politics #40

670 views / 1 likes - added 8 years ago

Today, Craig is going to talk about political parties and their role in American politics. So, when most people think about political parties they associate them with the common ideologies of the voters and representatives within that party, but the goal
08:51 Popular
Taking Notes: Crash Course Study Skills #1

831 views / 0 likes - added 6 years ago

The first step in honing your new study skills is to take better notes. This week Thomas will tell you everything you need to know to come to class prepared and find a note-taking system that will help you retain and review like a champ. Resources: Study
10:31
How Close Are We to Launching the James Webb Space Telescope?

509 views / 1 likes - added 4 years ago

The James Webb Space Telescope will allow us to see further into space than ever before, and its discoveries are expected to revolutionize astronomy. So, how close are we to finally launching it? How Close Are We? Season 3 - https://www.youtube.com/watch?
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History of the 4th of July: Crash Course US History Special

832 views / 3 likes - added 9 years ago

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
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Registers and RAM: Crash Course Computer Science #6

738 views / 0 likes - added 7 years ago

Take the 2017 PBS Digital Studios Survey: http://surveymonkey.com/r/pbsds2017. Today we’re going to create memory! Using the basic logic gates we discussed in episode 3 we can build a circuit that stores a single bit of information, and then through some
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Memory & Storage: Crash Course Computer Science #19

590 views / 0 likes - added 6 years ago

Pre-order our limited edition Crash Course: Computer Science Floppy Disk Coasters here! https://store.dftba.com/products/computer-science-coasters So we’ve talked about computer memory a couple times in this series, but what we haven’t talked about is sto
05:58
Types Of Bureaucracies: Crash Course Government And Politics #16

611 views / 0 likes - added 9 years ago

This week Craig Benzine breaks down the different types of bureaucracies. I mean sure, they’re all part of the executive branch, but some work more directly with the president than others. Some bureaucracies exist solely to independently regulate industry
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What Happens At The Edge Of The Universe? | Space Time | PBS Digital Studios

1,298 views / 0 likes - added 8 years ago

Tweet at us! @pbsspacetime Facebook: facebook.com/pbsspacetime Email us! pbsspacetime [at] gmail [dot] com Comment on Reddit: http://www.reddit.com/r/pbsspacetime Lots of people believe the Universe is infinite, but there's a good possibility that might n
08:50
Is Space a Thing?

549 views / 0 likes - added 6 years ago

Try 23andMe: http://www.23andme.com/okay Don’t miss our next video! SUBSCRIBE! ►► http://bit.ly/iotbs_sub ↓↓↓ More info and sources below ↓↓↓ Since the days of Ancient Greece, philosophers and scientists have been wondering: What is space? Is the absence
08:50
Test Anxiety: Crash Course Study Skills #8

613 views / 0 likes - added 6 years ago

Exams can be terrifying. It’s easy to feel like the weight of the world rests in these moments – like this one test determines your grades and, in turn, your whole future – even if you know, rationally, that this isn’t really the case. What’s worse is tha
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Tissues, Part 2 - Epithelial Tissue: Crash Course A&P #3

1,551 views / 0 likes - added 9 years ago

•••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
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Papers & Essays: Crash Course Study Skills #9

546 views / 0 likes - added 6 years ago

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
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Screens & 2D Graphics: Crash Course Computer Science #23

588 views / 0 likes - added 6 years ago

Today we begin our discussion of computer graphics. So we ended last episode with the proliferation of command line (or text) interfaces, which sometimes used screens, but typically electronic typewriters or teletypes onto paper. But by the early 1960s a
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This rock is from outer space

279 views / 0 likes - added 3 years ago

Check out my main channel: https://www.youtube.com/c/NileRedIt might look just like a generic rock, but this rock is special because it doesn't even come from this planet. It's a chunk of a meteorite that came from space and it's magnetic because it's mos
10:23 Popular
Respiratory System, Part 2: Crash Course A&P #32

1,174 views / 1 likes - added 8 years ago

Can a paper bag really help you when you are hyperventilating? It turns out that it can. In part 2 of our look at your respiratory system Hank explains how your blood cells exchange oxygen and CO2 to maintain homeostasis. We'll dive into partial pressure
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Why the Evolutionary Epic Matters: Crash Course Big History #203

448 views / 0 likes - added 6 years ago

Today we're talking about evolution–basically the history of all life on Earth. The thing is, why are we talking about this. Well, the story of life, all the way back to single celled microbes billions of years ago, is all part of our human story. An impo
What Are Rocks and How Do They Form? Crash Course Geography #18

228 views / 0 likes - added 2 years ago

From towering mountains to pebbles along a river, the Earth is made of a huge variety of rocks. In today's episode, we're going to follow the rock cycle of a piece of granite in the Himalayan mountains, and as you'll see, every rock has a far-reaching sto
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Immune System, Part 1: Crash Course A&P #45

1,252 views / 2 likes - added 8 years ago

Our final episodes of Anatomy & Physiology explore the way your body keeps all that complex, intricate stuff alive and healthy -- your immune system. The immune system’s responses begin with physical barriers like skin and mucous membranes, and when they’
12:31 Popular
The Railroad Journey and the Industrial Revolution: Crash Course World History 214

753 views / 2 likes - added 9 years ago

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

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