The classical physics that we encounter in our everyday, macroscopic world is very different from the quantum physics that governs systems on a much smaller scale (like atoms). One great example of quantum physics' weirdness can be shown...

John Maeda, former President of the Rhode Island School of Design, delivers a funny and charming talk that spans a lifetime of work in art, design and technology, concluding with a picture of creative leadership in the future. Watch for...

As the Earth's surface temperature gradually rises, it has become vital for us to predict the rate of this increase with as much precision as possible. In order to do that, scientists need to understand more about aerosols and clouds....

Join Jessi and some new friends for an experiment to see what sinks, and what floats!

Public bathrooms are teeming with microbes! You know to wash your hands, but when choosing between a hand dryer or a paper towel to dry them off, what's your cleanest bet?

Research shows that helping others makes us happier. But in her groundbreaking work on generosity and joy, social psychologist Elizabeth Dunn found that there's a catch: it matters how we help. Learn how we can make a greater impact --...

Why do teenagers sometimes make outrageous, risky choices? Do they suddenly become reckless, or are they just going through a natural phase? To find out, Kashfia Rahman -- winner of the Intel International Science and Engineering Fair...

It's the beginning of a new semester! We have some psychological tips that can help you to take better notes.

In this episode of Crash Course Psychology, Hank takes a look at how the treatment for Psychological Disorders has changed over the last hundred years and who is responsible for getting us on the path to getting us here.
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Want to learn how plants move water around inside them? Or do you just want to turn a stalk of celery purple? Then try our amazing color-changing celery experiment, in class or at home!

Hank takes a break from the desk to bring you to the lab in order to demonstrate some important points about the practical side of chemistry - experimentation in the laboratory. You'll learn what to wear in the lab, how to dispose of...

Can you believe that you can blow up a balloon without actually blowing your own air into it!? Follow along with this super neat experiment and find out how!

Jessi brought one of her favorite toys to the fort, a magnet! Let's see what it can stick to!

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...

New ReviewYou can hear it charging up!

New Review“Safety with Electricity” describes how electricity comes into your house and lists the top ten safety rules for electrical safety.

Let's make Higgins' erupting volcano a proper science project!

Let's find the most EXPLOSIVE Mentos and soda combo!

On January 10, 1946, the U.S. army bounced radar signals off of Earth's moon for the first time ever. Known as "Project Diana," this was the first experiment in radio astronomy. They set up a large transmitter, receiver and antenna at a...

Does the world’s most common pain relief drug do more than just reduce pain? Recent headlines would have you believe that it also reduces your perception of risk, resulting in more risk-taking behaviors. We think it’s time to take a...

Validity is a key concept in research methods. It can be broken down into two umbrella categories: internal validity and external validity.
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1) Internal validity considers factors within the design of the ex
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Science is about more than just finding immutable laws of nature. It’s about having the imagination to try things and ask questions that might not necessarily lead anywhere, but that just… feel right.

This lesson will explore the famous mathematical law, the law of large numbers, and its misconceptions.

From land to sea to space, scientists are using incredible tools to make new discoveries. These are the ten largest instruments in use around the world.