Paul Andersen introduces the nucleic acids of life; RNA and DNA. He details the history of DNA from Griffith, to Avery, to Hershey and finally to Watson and Crick. He also details the difference between prokaryotic and eukaryotic...

Paul Andersen describes genetic drift as a mechanism for evolutionary change. A population genetics simulator is used to show the importance of large population size in neutralizing random change. The near extinction of the northern...

Mr. Andersen shows you how write the chemical formula for chemical names.

Mr. Andersen explains the concept of a limiting reactant (or a limiting reagent) in a chemical reaction. He also shows you how to calculate the limiting reactant and the percent yield in a chemical reaction.

When faced with a bump in the road, sometimes we forget we have a choice: overcome the obstacle or let it overcome you. Steven Claunch, who was born without fingers on his right hand and with one leg shorter than the other and has...

In this video Paul Andersen explains how the charge distribution can be affected my electric forces produced by a charged object. In an insulator charges are fixed but in conductors the charges can move. Induction occurs when the...

Mountains are some of the biggest things in the world, but today, we're going to teach you how to make some of your own, right on your kitchen table!

It's 1819. The US is preparing to make Missouri and Maine new states. One representative insists that slavery shouldn't be allowed in any new state. Another believes it should be a state's right to choose. A compromise is proposed:...

Jessi and Squeaks love pretending to be space explorers, visiting far-away planets! Did you know that, right now, there are scientists working on ways to send people to other planets in real life? And where better to start than our...

Mister Brown and Squeaks are learning all about different cycles, or patterns, as they get ready for summer!

Mr. Andersen explains the Central Dogma of biology. He shows how DNA is transcribed to form mRNA and how mRNA is translated into a protein.

Join Phil for a tour of our capital-M Moon, from surface features, inside to the core, and back in time to theories about its formation.

Genetics are extremely complicated—so complicated that having an extra finger or toe, for example, is exceedingly rare despite it being caused by a dominant gene.

Mr. Andersen introduces the topic of electricity. He differentiates between static electricity and current electricity. An introduction to electric circuits is also included.

Join Jessi, Bill and Webb to learn all about the place we call home!

Social psychologist Dannagal G. Young breaks down the link between our psychology and politics, showing how personality types largely fall into people who prioritize openness and flexibility (liberals) and those who prefer order and...

Today Hank talks about your central nervous system. In this episode we'll explore how your brain develops and how important location is for each of your brain's many functions.



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Central Nervous...

In this video Paul Andersen explains how electromagnetic induction occurs when the magnetic flux of an object changes. The magnetic flux is product of the surface area perpendicular to the magnetic field and the magnetic field strength....

So, have you ever wondered why we have seasons? Or maybe where the sun goes when it's night time? *Hint: It doesn't actually go anywhere* In this episode of Crash Course Kids, Sabrina talks about the Earth's rotation and revolution and...

In this video Paul Andersen explains how waves interact with objects and with other waves. When a wave hits a fixed object it will be reflected and inverted. When a wave hits a free object it will be reflected without being inverted. ...

You've probably heard of acid rain: rain that's more acidic than normal because of pollution in the atmosphere. But, if rain can become more acidic, shouldn't it also be able to become more basic?

Paul Andersen explains how natural selection is a major mechanism in evolution. The video begins with a discussion of Charles Darwin and the details of natural selection. The data of the peppered moth during the industrial revolution...

How does light speed up after leaving glass or water? What do light and the President of the United States have in common?

On January 17, 1920, less than one hour after spirits had become illegal throughout the United States, armed men robbed a Chicago freight train and made off with thousands of dollars worth of whiskey. It was a first taste of the...