Showing titles in How Things Work

Nuclear weapon bunkers keep the world's dangerous nuclear weapons safe. Guards, electronic security systems, and barriers protect the bunkers. Learn more about these high-security places!

How can important information and valuable items be kept safe as years pass? Many of these items are stored in underground vaults, including recordings and photos from U.S. history, important documents, and more. Locks, guards, secret passwords, and technology all play a part in the protection of the items.

The wheel was invented more than 5,000 years ago, and it has brought some awesome vehicles our way. But this invention isn't done giving! Take a tour of some of the most unique and fascinating vehicles around.

Streaming puts a world of options at your fingertips when you’re at home and, with a smartphone or tablet, when you're on the go. Find out how streaming was invented, how it works, and what the future might hold for this part of a high-tech life.

Did you ride a bike today? Then you’ve used wheels and axles! These simple machines are all around. Take a listen and discover 13 different ways we use wheels and axles.

Searching for easy engineering projects for your makerspace? You've come to the right place! From winches and gears to bridges and marble runs, these 10-minute STEM projects will have kids making in no time!

Scientists put things into groups so they are easier to study. Materials have different properties. What are they, and how they are grouped? Let’s investigate materials!

Sounds can be loud. Sounds can be soft. We use our ears to hear all kinds of sounds. But how is sound made? Let’s investigate to find out about sound!

In science fiction, invisibility cloaks let their users vanish from sight and sneak around unnoticed. How could one of these stealthy pieces of clothing work? Scientists have some ideas, which involve bending light. Discover the science and technology behind what it would take to make a real-life invisibility cloak!

Honey is a sweet treat! But where does it come from? Flowers open. A bee flies to the flowers. The bee drinks nectar. The bees fly home. Discover what happens next in the process of making of honey.

Criadores do Manual do Mundo, Iberê Thenório e Mari Fulfaro são apaixonados pela exploração do Universo. Agora, ao lado do astronauta Terry Virts, eles convidam você a conhecer de perto os bastidores da vida no espaço.

Brüste wachsen, Achselhaare sprießen, auf einmal fühlt man sich zum Banknachbarn hingezogen und die Eltern nerven nur noch: Wenn aus Kindern Teenies und schließlich junge Erwachsene werden, steht die Welt Kopf – und die Heranwachsenden haben tausend Fragen. Auch Unsicherheiten, mangelndes Selbstbewusstsein oder Hadern mit dem Körper gehören oft zum Alltag, und Mama und Papa sind nicht für jedes Thema der Ansprechpartner Nr. 1.

Machines can make our life easier. A simple machine is something that can change the direction or strength of a force. All complicated machines are made of one or more simple machines. Simple machines can reduce the effort needed for you to run them. See if you can find the simple machines around you.

Die Neugier unserer Jüngsten kennt keine Grenzen. Alles wollen sie genau wissen und den ganzen Tag sind sie damit beschäftigt, uns Erwachsenen unzählige Fragen zu stellen. Wieso kaut die Kuh auch im Liegen? Wie belagert der Ritter eine Burg? Warum sind Feuerwehrautos rot? Wozu hat der Triceratops drei Hörner? Diese Hörspielreihe ist für alle Kinder gemacht, die noch nicht lesen können oder es gerade erst lernen. Sie entführt wissbegierige kleine Weltentdecker zu Geschichten und Schauplätzen, die ihnen am Herzen liegen und die sie begeistern.

Did you walk up a ramp today? Then you’ve used an inclined plane! These simple machines are all around. Take a listen and discover 13 ways we use inclined planes.

Let the mission begin with this far-out series. This volume includes Mars Rovers, Robonauts, Rockets, and Space Shuttles.

Books are made with paper. But what if we tried to make a book with metal? Copper, tin, gold, silver—would any of those materials work to make a book? Find out more about metal, its properties, and how it is produced. Then decide if you really could make a book out of metal.

Do you know where your clothes come from? Learn about the processes of making certain materials that are used in clothing! Guess what plant or animal that rubber boots come from? What material is made from plastic bottles? You’ll be surprised to learn how the clothes you wear everyday are manufactured!

Click and his friends wish to live in their favorite tree like the friendly squirrels. They decide to build a treehouse—but first they must collect the necessary materials and learn what tools they'll need for the job! They find a hammer, saw, level and measuring tape. What safety tools with they need to build their treehouse?

Have you ever wondered how buildings are created? Architects have to use lots of different shapes in order to build a structure. Many geometric shapes are needed to create building designs. Can you find the different shapes in historical landmarks from all over the world?