Crash Course
Productivity and Growth: Crash Course Economics
Why are some countries rich? Why are some countries poor? In the end it comes down to Productivity. This week on Crash Course Econ, Adriene and Jacob investigate just why some economies are more productive than others, and what happens...
TED-Ed
TED-Ed: The carbon cycle - Nathaniel Manning
What exactly is the carbon cycle? Nathaniel Manning provides a basic look into the cyclical relationship of carbon, humans and the environment.
TED Talks
I let algorithms randomize my life for two years | Max Hawkins
What if everything in your life was randomized: from the food you ate to the things you did and the places you traveled? Computer scientist Max Hawkins created algorithms to make decisions like these for him -- and got hooked on the...
Crash Course
Electronic Computing: Crash Course Computer Science
So we ended last episode at the start of the 20th century with special purpose computing devices such as Herman Hollerith’s tabulating machines. But as the scale of human civilization continued to grow as did the demand for more...
SciShow
How the Internet Was Invented | The History of the Internet, Part 1
The Internet is older than you might think!
Crash Course
The Personal Computer Revolution: Crash Course Computer Science
Today we're going to talk about the birth of personal computing. Up until the early 1970s components were just too expensive, or underpowered, for making a useful computer for an individual, but this would begin to change with the...
TED Talks
TED: What separates us from chimpanzees? | Jane Goodall
Jane Goodall hasn't found the missing link, but she's come closer than nearly anyone else. The primatologist says the only real difference between humans and chimps is our sophisticated language. She urges us to start using it to change...
Crash Course
Registers and RAM: Crash Course Computer Science
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 clever scaling (and of course many new levels of abstraction)...
SciShow
Quantum Tunneling Takes a Surprisingly Long Time
Quantum tunneling happens when a particle seemingly teleports across a barrier. But despite how instantaneous this event sounds, recent research suggests that it doesn’t happen nearly as fast as you might think.
Crash Course
Early Programming: Crash Course Computer Science
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...
SciShow
6 Weird Units of Measurement We're Still Using for Some Reason
You might be benefiting from the weird units you've never heard every time you put on your shoes or read about dark matter.
TED-Ed
TED-ED: What is the World Wide Web? - Twila Camp
The World Wide Web is used every day by millions of people for everything from checking the weather to sharing cat videos. But what is it exactly? Twila Camp describes this interconnected information system as a virtual city that...
Crash Course
Cybersecurity: Crash Course Computer Science
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...
TED Talks
Dennis Hong: Making a car for blind drivers
Using robotics, laser rangefinders, GPS and smart feedback tools, Dennis Hong is building a car for drivers who are blind. It's not a "self-driving" car, he's careful to note, but a car in which a non-sighted driver can determine speed,...
SciShow
Can Screens Damage Your Eyes?
You might have heard that exposure to unnatural lights from digital devices can hurt your eyes. But is that true?
Crash Course
The First Programming Languages: Crash Course Computer Science
So we ended last episode with programming at the hardware level with things like plugboards and huge panels of switches, but what was really needed was a more versatile way to program computers - software! For much of this series we’ve...
Crash Course
Electrical Power, Conductors, & Your Dream Home: Crash Course Engineering #21
Today, we'll explore the materials electrical engineers work with. We'll look at high-conductors, insulators, and how low-conductivity conductors can be used to generate light and heat.
TED-Ed
TED-ED: Are you a body with a mind or a mind with a body? - Maryam Alimardani
Our bodies _ the physical, biological parts of us - and our minds - the thinking, conscious aspects - have a complicated, tangled relationship. Which one primarily defines you or your self? Are you a body with a mind or a mind with a...
Bozeman Science
Viruses
Paul Andersen describes the important characteristics of viruses. He starts with a brief description of origin theories. He then describes the two characteristics of all viruses; genetic information and protein coats. He also describes...
Crash Course
The Central Processing Unit (CPU): Crash Course Computer Science
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 GTA V, Slack... and Power Point. To make our CPU we’ll bring...
SciShow
We Found Two Planets Using Artificial Intelligence!
Artificial Intelligence has helped astronomers discover 2 new planets in systems that we'd already looked at, and new theories about how Mars lost some of its water have surfaced.
TED Talks
Simon Sinek: How great leaders inspire action
Simon Sinek has a simple but powerful model for inspirational leadership -- starting with a golden circle and the question "Why?" His examples include Apple, Martin Luther King, and the Wright brothers ...
TED Talks
TED: What happens in your brain when you pay attention? | Mehdi Ordikhani-Seyedlar
Attention isn't just about what we focus on -- it's also about what our brains filter out. By investigating patterns in the brain as people try to focus, computational neuroscientist Mehdi Ordikhani-Seyedlar hopes to build computer...
Crash Course
Locke, Berkeley, & Empiricism: Crash Course Philosophy
This week we answer skeptics like Descartes with empiricism. Hank explains John Locke’s primary and secondary qualities and why George Berkeley doesn’t think that distinction works -- leaving us with literally nothing but our minds,...