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Professor Dave Explains
The Law of Conservation of Matter
When you eat a burrito, where does all that matter go? What about when matter changes phases, does any matter appear or disappear? When we talk about this sort of stuff, reality sometimes goes against our intuition, so we'd better make...
Visual Learning Systems
Introduction to Everyday Natural Resources
This video introduces the Everyday Natural Resources series. This series illustrates some of the many resources we utilize regularly. Some of the most important and vulnerable resources, such as air and water, are explored in detail....
Fun Kids
What Do You Do Every Day?
What do you do every day? A daily routines and activities song for kids studying ESL! Watch our daily routines song to learn the English brush my teeth, ride a bike, take a bath and go to bed. There's lots more to see and do, too! What...
Crash Course
Crash Course Computer Science #35: Computer Vision
This episode talks about how computers see. We've long known that our digital cameras and smartphones can take incredibly detailed images, but taking pictures is not quite the same thing. For the past half-century, computer scientists...
Crash Course
Crash Course Computer Science #37: Robots
This episode talks about robots! Robots are often thought as a technology of the future, but they're already here by the millions in the workplace, our homes, and pretty soon on the roads. We'll discuss the origins of robotics to its...