Mmmm! The smell of a batch of cookies straight out of the oven is enough to make your mouth water! But have you ever wondered why your mouth waters?! Jessi and Squeaks are here to tell you all about saliva and the many ways it helps you...

Paul Andersen explains the major plants structures. He starts with a brief discussion of monocot and dicot plants. He then describes the three main tissues in plants; dermal, ground and vascular. He also describes the plant cells...

The decisions we make while we browse the internet are suprisingly similar to the ones animals make as they forage for food...here's why.

It's freezing outside and cold weather makes Jessi think of glaciers!

Cell membranes are structures of contradictions. These oily films are hundreds of times thinner than a strand of spider silk, yet strong enough to protect the delicate contents of life: the cell's watery cytoplasm, genetic material,...

Have you ever wondered what those things are on airplane wings? You know, those little angled bits of metal? Watch to learn what they are and how they’re used!

In this episode we looked at robots and the engineering principles of robots. We learned how robots use sensors to interpret their environment, how actuators and effectors allow a robot to manipulate the objects around it to accomplish a...

Paul Andersen explains how hugs between tissues can help maintain homeostasis. Countercurrent heat exchange allows heat to stay within the core of the body. Close contacts between the capillaries and alveoli allow our body to maintain...

In this video Paul Andersen defines adaptations and explains how organisms can become better adapted to their surroundings using the process of natural selection. Specific examples of adaptations, like coat color in rock pocket mice, as...

Jessi and Squeaks love watching clouds and birds fly way up in the sky! But why is the sky blue?

This video is brought to you by the Child and Teen Checkups program of the Minnesota Department of Health.

What is the loudest possible sound? What about the quietest thing we can hear? And what do decibels measure, anyway? In this video you'll learn what makes sound

Expert timing and spacing is what separates a slide show from a truly amazing animation. TED-Ed demonstrates, by manipulating various bouncing balls, how the smallest adjustments from frame to frame can make all the difference.

SciShow Space takes you behind the scenes of astronaut training, to show how crew members and their equipment are tested in microgravity, all while never having to leave Earth.

Sloths might be slow and spend much of their time sleeping, but they’re definitely not boring. Jessi shares three weird facts about sloths!

Whether you're out camping, cooking, or snuggled up in front of your fireplace, you know that fire is hot! But why? Join Jessi and Squeaks to learn how fires turn wood or other fuel into useful heat!

Paul Andersen explains the importance of argumentation in improving both understanding and design. This video begins with a discussion of the heliocentric and geocentric model of the Universe that eventually lead to the Copernican...

In this video Paul Andersen explains how the pressure, volume, amount, and temperature of an ideal gas are related. Absolute zero of a gas can be determined by varying the temperature and measuring the corresponding volume of a gas...

Did you know that when you fall down, the earth falls up to meet you? Explore the counterintuitive equation that describes gravity.

What is torque? This is one of those things that you may have heard about in passing but never really understood. In this episode of Crash Course Physics, Shini sits down with us to discuss what torque is, how it works, why it works, and...

In this video Paul Andersen explains how Newton's Second Law applies when a net force acts on a body. The net force vector and the acceleration vector will act in the same direction. If an object acts on another object in a system the...

This time, we're the asteroid

How do you explain the properties of something we can't see? See how scientists use scientific principles, such as gravity, to observe gases. This lesson explores gases and how we have come to know what we know about them.

Sound waves vibrate more than just our eardrums, they can also make visual art!