• Spiders: The First Web Developers
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    Spiders: The First Web Developers

    – We’re back here at the Field Museum with Dr. Petra Sierwald who is an associate curator in insects and today, what are we going to talk about? – Spiders, of course, my favorite. – But spiders aren’t insects. – I know, I know. But they are also arthropods, and the methods we use for preservation for insects, at least for some of the insects, are the same that we use for spiders and other arachnids, but also myriapods – millipedes and centipedes. We have over 45,000 described spider species. For some of the fauna, for example, in the soil we expect that 40% may yet to be described– –…

  • The Internet: Crash Course Computer Science #29
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    The Internet: Crash Course Computer Science #29

    Hi, I’m Carrie Anne, and welcome to CrashCourse Computer Science! As we talked about last episode, your computer is connected to a large, distributed network, called The Internet. I know this because you’re watching a youtube video, which is being streamed over that very internet. It’s arranged as an ever-enlarging web of interconnected devices. For your computer to get this video, the first connection is to your local area network, or LAN, which might be every device in your house that’s connected to your wifi router. This then connects to a Wide Area Network, or WAN, which is likely to be a router run by your Internet Service Provider, or…

  • Web Search: Crash Course AI #17
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    Web Search: Crash Course AI #17

    Hi, I’m Jabril and welcome to Crash Course AI! There used to be a time when a group of friends at dinner could ask a question like “is a hot dog a sandwich?” and it would turn into a basic shouting match with lots of gesturing and hypothetical examples. But now, we have access to a LOT of human knowledge in the palm of our hands… so our friends can look up memes and dictionary definitions and pictures of sandwiches to prove that none of them have a connected bun like hot dogs (disappointed). Search engines are a huge part of modern life. They help us access information, find directions…

  • The World Wide Web: Crash Course Computer Science #30
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    The World Wide Web: Crash Course Computer Science #30

    Hi, I’m Carrie Anne, and welcome to CrashCourse Computer Science. Over the past two episodes, we’ve delved into the wires, signals, switches, packets, routers and protocols that make up the internet. Today we’re going to move up yet another level of abstraction and talk about the World Wide Web.This is not the same thing as the Internet, even though people often use the two terms interchangeably in everyday language. The World Wide Web runs on top of the internet, in the same way that Skype, Minecraft or Instagram do. The Internet is the underlying plumbing that conveys the data for all these different applications. And The World Wide Web is…

  • Politics: Crash Course Sociology #30
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    Politics: Crash Course Sociology #30

    You’re a good citizen, right? You voted in the last election, or you’re looking forward to voting in the future. You pay your taxes. You’re happy to exercise the full range of your civic responsibilities. The point is, you might already know all about how your government works. If you don’t, and you’re American, well, there’s a Crash Course for that. But even if you’re an informed citizen who knows every line of your constitution by heart, that doesn’t mean you know why your government works. For that, we need a different kind of political knowledge. Civics can tell you how your system works, but sociology can help you understand…

  • How to Host a Party!
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    How to Host a Party!

    This episode is brought to you by Skillshare, an online learning community with more than 16,000 classes in design, photography, and more. [♪♩INTRO] [♪♩MUTED PARTY MUSIC] HI! HOW’S IT GOING? GREAT PARTY, RIGHT? In your younger years, throwing a party… it can be really easy. College-aged party-goers don’t often need more than cheap beer and loud music. I had sophisticated tastes, I also wanted some Super Smash Brothers. But as an adult, maybe you would like to step up your game and throw a soiree that’s memorable for the right reasons. Here are some completely unscientific but totally handy Party Pro Tips from a party pro. TIP 1: Schedule your…

  • Moore’s Law and The Secret World Of Ones And Zeroes
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    Moore’s Law and The Secret World Of Ones And Zeroes

    Behold! The transistor, a tiny switch about the size of a virus that can control the flow of a small electrical current. It’s one of the most important inventions ever because when it’s on, it’s on and when it’s off, it’s off. Sounds simple. Probably too simple. But this “either/or” situation is incredibly useful because it is a binary system. On or off, yes or no, one or zero. But with enough transistors working together we can create limitless combinations of “ons” and “offs”, “ones” and “zeros” to make a code that can store and process just about any kind of information you can imagine. That’s how your computer computes,…

  • Quantum Computing Breakthrough
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    Quantum Computing Breakthrough

    If you are among the group of people who either are really into quantum physics, or people who have used a computer, there’s some big news this week. But it took place on a very small scale. researchers at the University of New South Wales in Sydney, have just created a kind of quantum logic circuit out of silicon, clearing the way for actual -were not just talking about the many- where we can actually build one now: quantum computers. Quantum computers are exciting because they could carry out multiple computations at once. This won’t make browsing the internet any faster, but it will, for example, let drug companies test…

  • The Internet and Computing: Crash Course History of Science #43
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    The Internet and Computing: Crash Course History of Science #43

    We’ve talked a lot about advances in biotech. But none of those could have happened without advances in computing. It’s time to get back to data and explore the unlikely birth, strange life, and potential futures of the Internet. The theme of the history of computing is that what we mean by “computing” keeps changing. With the invention of the transistor in 1947, the computer started to shrink! And speed up! And change meaning yet again, becoming a ubiquitous dimension of contemporary life—not to mention a totally normal thing to yell at. Hey Google… can you roll the intro? [long pause] Google: I’m not sure. [Intro Music Plays] In 1965,…

  • The Singularity, Skynet, and the Future of Computing: Crash Course Computer Science #40
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    The Singularity, Skynet, and the Future of Computing: Crash Course Computer Science #40

    Hi, I’m Carrie Anne, and welcome to Crash Course Computer Science! We’re here: the final episode! If you’ve watched the whole series, hopefully you’ve developed a newfound appreciation for the incredible breadth of computing applications and topics. It’s hard to believe we’ve worked up from mere transistors and logic gates, all the way to computer vision, machine learning, robotics and beyond. We’ve stood on the shoulders of giants like Babbage and Lovelace, Hollerith and Turing, Eckert and Hopper, Sutherland and Engelbart, Bush and Berners Lee, Gates and the Woz, and many other computing pioneers. My biggest hope is that these episodes have inspired you to learn more about how these…