Showing titles in How Things Work

In mid-1860s, two railroad companies had a huge job in front of them: building the transcontinental railroad. The railroad would run from east to west across the United States. As the grueling work began, there were many choices to make. Now, the choices are yours.

Did you see a flagpole today? Then you’ve seen a pulley at work! These simple machines are all around. Take a listen and discover 13 different uses for pulleys.

A virtual assistant by any name—Alexa, Siri, whoever—can be a sweet addition to your home. You might use one for simple jobs like playing music or streaming podcasts. And you might use one to communicate with friends and remind you about homework coming due while helping you make your breakfast. Find out how digital assistants work and what the future might hold for this part of a high-tech home.

Imagine you arrive at school and realize you forgot to feed the dog. No problem. Pull out your phone and command the dog dish to dispense a serving of food. That's all there is to it—if you live a smart home. What once sounded like science fiction is now a reality for some families.

Microwaves heat our food. They carry messages from phone to phone. They help detect the weather. Microwaves are all around us, even if we don't see them. Listeners will learn about microwaves and how we use them every day.

Did you put the cap on the toothpaste tube today? Then you’ve used a screw! These simple machines are all around. Take a listen and discover 13 different ways we use screws.

Did you use a fork today? Then you’ve used a lever! These simple machines are all around. Take a listen and discover 13 different ways we use levers.

Air Force One keeps the U.S. president safe while flying. Learn more about the features that protect this amazing plane. Also find out how team members protect the president as he travels on Air Force One.

The United States keeps its gold safe at Fort Knox. How is this done? There are fences, locks, guards, and more. Learn more about this high-security place!

What does it take to make a tough tower? Gather some supplies and try it out for yourself! Discover tips and ideas on how to build the best tower around!

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.

Animals have many traits that help them survive in the wild. Inspired by animals' incredible abilities, military forces have created many machines over the years to achieve success on the battlefield. From the first remote-controlled vehicles to the advanced machines of tomorrow, learn how military robots and drones often imitate the abilities of animals throughout nature. Then be sure to catch the other amazing titles in the Beasts and the Battlefield series.

From the written word to the cell phone, human communication has come a long way. What might the future hold? Listeners can discover how virtual reality, holograms, and a fully connected "internet of things" may affect how they communicate in the near and distant future.

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.

Radio waves aren't just for listening to your favorite radio station! They are used to make GPS receivers and wireless internet work. Scientists use radio telescopes to help them study space. Listeners learn about radio waves and how we use them every day.

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.

Hear about some of the world's fastest transportation breakdowns. Find out how each form of transportation failed, the basic engineering missed during construction, and what engineers learned from their mistakes.

Hear about some of the world's biggest building blunders. Find out how each structure failed, the basic building block that was missed during construction, and what engineers learned from their mistakes.

Hear about some of the world's greatest gadget disasters. Find out how each gadget failed, what went wrong with its design or manufacture, and what programmers learned from their mistakes.