We've all been told that we should recycle plastic bottles and containers. But what actually happens to the plastic if we just throw it away? Emma Bryce traces the life cycles of three different plastic bottles, shedding light on the...

Today we're going to talk about rivers and how these dynamic, delicate, yet powerful systems are able to constantly change the landscape. We'll focus on the Zambezi River in Southeast Africa following its main features from the...

For most of history, scientists weren't quite sure why our hearts were beating or even what purpose they served. Eventually, we realized that these thumping organs serve the vital task of pumping clean blood throughout the body. But how?...

The way light behaves can seem very counter intuitive, and many physicists would agree with that, but once you figure out light waves it all starts to make more sense! In this episode of Crash Course Physics, Shini shows us how we know...

Some plants have very unique ways to disperse their seeds. Olivia introduces 5 of the most bizarre seeds in the world!

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...

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...

Hank brings us to the next level of ecological study with ecosystem ecology, which looks at how energy, nutrients, and materials are getting shuffled around within an ecosystem (a collection of living and nonliving things interacting in...

Did you know the moon has a tail? No one did, until 1998, and we've been trying to figure it out ever since.

In this episode of Crash Course Kids, Sabrina talks about two of the four spheres that make up our planet; The Geosphere and the Biosphere. What's in these spheres? How do they affect us? How do they fit into the puzzle that is Earth?...

New ReviewLearn Bernoulli’s Principle with a straw and a ping pong ball. A fun and simple physics demo to see pressure differences in action!

Why do salmon use Earth's magnetic field to find their birth stream, only to die after spawning? Why do caribou traverse thousands of miles? This is the dramatic story of animal migration—a tale of life, death, and the survival of future...

In this video, we introduce Classes D and E IP addresses, explaining their specialized purposes.

In this video, we examine the different types of network traffic: unicast, broadcast, and multicast.

This video provides a tutorial on how to effectively communicate with students using Google Classroom. It demonstrates the process of sending emails to individual students or the entire class, as well as posting announcements on the...

Howcast - When a comet orbits the sun, it sheds a stream of debris. Meteor showers are caused when the Earth travels through the stream left behind by the comets, and the debris burns up in the atmosphere. Here's how to watch one.

Howcast - Learn how to sing the classic kid's song Row Row Row Your Boat with this Howcast video.

Howcast - Many full-length movies from indie filmmakers are legally available online for free. Some commercial films are offered at studio-supported websites. Why rent when you can stream?

Howcast - Be the DJ of your own personal radio station by streaming audio from your personal music library to any computer in the world.

Howcast -With AirPlay, you can stream media directly from your Apple mobile device to a variety of video and audio components. Here's how to use this wireless technology.

Howcast -Learn about the entertainment services offered on the PS4 from expert gamer Rob Pimentel in this Howcast video.

Howcast -Learn how to share your photo stream in this Mac tutorial from Howcast.

Quit hogging your own backyard. Make it a haven for your fine feathered friends.

Howcast -Learn how to master the basics of water in Minecraft with this Minecraft tutorial.