Cheese is a great snack! One of the best things about it is that there's so many different kinds: cheddar, mozzarella, provolone, gouda... the list goes on and on! But have you ever wondered why some cheeses, like Swiss, are full of...

Hank tells you about cavitation - the power of tiny bubbles to weaken metal, kill fish & maybe even cure cancer.

Paul Andersen starts with a brief description of enzymes and substrates. He then explains how you can measure the rate of an enzyme mediated reaction. Catalase from yeast is used to break hydrogen peroxide down into water and oxygen. ...

Given that Earth’s magnetic field helps protect its life-sustaining atmosphere, you might think that the stronger a planet’s magnetic field, the better. But as it turns out, some planets’ relationships with their magnetic fields are a...

Your digestive system makes weird noises sometimes. You can't really stop it from happening, but you can find out why it happens in the first place!

It might seem like magic when you put some batter in the oven and pull out a fluffy cake, but it's actually science! Join Jessi and Squeaks as they bake a cake and explain how the ingredients react with each other to make a tasty treat!

This week we continue to spend quality time with gases, more deeply investigating some principles regarding pressure - including John Dalton's Law of Partial Pressures, vapor pressure - and demonstrating the method for collecting...

Claws and teeth are one way to catch a meal, but here are six animals that have evolved some pretty unique hunting techniques. Chapters FROGFISH 0:51 BOLAS SPIDERS 2:16 3 HUMPBACK WHALES 4:22 PISTOL SHRIMP 5:19 8:14 HUMANS 8:39

Talking at the US State Department this summer, Hans Rosling uses his fascinating data-bubble software to burst myths about the developing world. Look for new analysis on China and the post-bailout world, mixed with classic data shows.

When you think of surfactants, you might think of soaps, detergents and other man-made chemicals. But it turns out that some other animals utilize their own versions of these sudsy molecules.

In February of 1942, Mexican farmer Dionisio Pulido thought he heard thunder coming from his cornfield. However, the sound wasn't coming from the sky. The source was a large, smoking crack emitting gas and ejecting rocks, and would come...

Mister Brown and Squeaks are making bread, and they're going to need a tiny little helper to get the job done: a fungus called yeast!



Disciplinary

Core Idea:

PS1.B: Chemical Reactions - Heating or cooling a...

The sun is out and Jessi and Squeaks are ready to perform all kinds of fun outdoor science experiments! Let's take a look at some of the fun activities they've done before, like making a kite, building a solar tower, blowing bubbles, and...

Mr. Andersen explains the difference between physical and chemical changes. A brief discussion of chemical reactions and equations is also included.

Humans can go inside or put on clothes, but trees spend winter naked in the cold. Why don't they all die?

New ReviewWatch them float away!

Howcast - Learn the basic techniques of making balloon animals from magician Jonas Cain in this Howcast video.

Howcast - Learn how to make a balloon tiger by following magician Jonas Cain's step-by-step instructions in this Howcast video.

Howcast - Learn how to make a balloon giraffe or dachshund by following magician Jonas Cain's step-by-step instructions in this Howcast video.

Howcast - Learn how to make a balloon pig by following magician Jonas Cain's step-by-step instructions in this Howcast video.

Howcast - Learn how to steam milk with an espresso machine from the experts at Third Rail Coffee in this Howcast video.

Howcast - Learn how to apply nail polish like a pro from Spa Taxi owner Danielle Corbin Jaime in this Howcast nail tutorial.

Howcast - Learn how to apply skateboard grip tape from SHUT Skateboards' Michael A. Cohen in this Howcast video, part one of two.

Howcast - Learn how to steam milk for latte art in this Howcast video.