In this video Paul Andersen explains how the gas pressure is the force applied over the area of the container. It is also the change in momentum as gas molecules interact with the container and is uniform throughout the sample. Several...

This is part 3 of 3 in my series about how our bodies evolved to look like they do.

In this video Paul Andersen explains how standing waves are created through the reflection and interference of traveling waves. Destructive interference creates areas of no movement called nodes. Constructive interference creates areas...

Laughter, love, and happiness are some of the best aspects of being human, and we've looked into the science behind it more than a few times. Here are a few videos that we hope will make you happy!

Hank updates us on two new missions that will help us learn more about some of the fascinating things in our space neighborhood.

Physiatrist and engineer Todd Kuiken is building a prosthetic arm that connects with the human nervous system -- improving motion, control and even feeling. Onstage, patient Amanda Kitts helps demonstrate this next-gen robotic arm.

A SciShow Kids viewer wrote us and asked: How does soap work? Find out what really happens when you take a bath!

Magnetic fields fill our universe, but here at home we have a very special one that nature uses in a myriad of ways. And further away, other magnetic fields give us fascinating glimpses into the nature of the universe!

Paul Andersen starts this video with a description of the respiratory surface. He explains how worms, insects, fish and mammals take in oxygen and release carbon dioxide. He then tours the major organs of the respiratory system; from...

Paul Andersen starts with a brief description of asexual and sexual reproduction. He explains how meiosis ensures variation in the next generation. He describes the important structures in the male and female reproductive system. He...

Jessi and Squeaks love to race each other! They can both run pretty fast, but there's one animal they'd never be able to beat: the cheetah! Join us to learn all about this super speedy cat!

In this episode of Crash Course Physics, Shini is very excited to start talking about Fluids. You see, she's a Fluid Dynamicist and Mechanical Engineer, so fluids are really important to her. Actually they're really important to anyone...

In this video Paul Andersen explains that entropy is simply the dispersion of matter or energy. He begins with a series of video that show the natural direction of processes. According to the second law of thermodynamics the entropy...

How you respond after setbacks is what defines your character. Stacey Abrams was the first black woman in the history of the United States to be nominated by a major party for governor -- she lost that hotly contested race, but as she...

Ever notice how one side of your nose always seems to be more stuffed than the other? What's up with that? Quick Questions knows!

SciShow explores one of the more rare and unusual results of sexual reproduction: gynandromorphy, in which an animal is part male and part female.

In this video Paul Andersen explains how redox reactions are driven by the movement of electrons from the substance that is oxidized to the substance that is reduced. Oxidation is the loss of electrons and reduction is the gaining of...

The magnetic dipole moment is the torque experienced by a material placed in a magnetic field. The magnetic dipole is an intrinsic property at the magnet, domain, atom, and electron level. A magnetic dipole creates magnetic fields that...

This episode is near the end of this series, but entrepreneurship isn’t a linear journey. You might need funding to accomplish any of the steps to build a business, not just when you’re ready to take a product or service to market....

So, there might not be just one solution to a problem. I know that may sound weird, but it's true. So, how do you come up with multiple solutions? In this episode of Crash Course Kids, Engineer Sabrina shows us how to do that.

In this video Paul Andersen discriminates between spontaneous (or thermodynamically favored) processes and those that are not spontaneous. A spontaneous process requires no external energy source. If the enthalpy change in a reaction...

In this video Paul Andersen explains how the activation energy is a measure of the amount of energy required for a chemical reaction to occur. Due to the collision theory the activation energy requires proper energy and orientation of...

In this video Paul Andersen explains how the conservation of charge applies to objects in a system. When a charged object induces charge or conducts charge to a neutral object the net total of charge will not change. Grounding allows...

VELCRO® fasteners are pretty cool, but what would you think if the idea came from living things? Jessi and Squeaks talk about the sticky seeds that inspired them!