Showing results for "High" in Science & Technology

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!

Have you ever wondered how tall and long bridges are built? Learn about three different bridges and try the activities to learn about how strong bridges, like the Golden Gate Bridge, are made.

From self-driving cars to magnetic trains, the future of transportation is full of exciting possibilities. Hit the fast lane to see what the next 100 years of transportation may have in store for the human race.

This audiobook describes some animals that live in high places, and who fly, climb, and soar to extreme heights. Some of the animals shown include the howler monkey, the snow leopard, and the griffin vulture.

You probably use Wi-Fi all the time to connect to the internet through your laptop, tablet, or phone. It's easy. Wi-Fi hotspots surround you as you go through your day—from school to a pizza place or coffee shop, and then back home. Not so long ago, the internet wasn't as accessible. Find out how Wi-Fi works, how it became commonplace, and what it might do for you in the future.

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.

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!

Former teachers Richard and Judy Dockrey Young bring their frightening performances alive on audio with 14 ghost stories from the American Southwest.

Fireworks crackle and boom in the sky. Your friend laughs at a joke. Sounds are all around you. But what exactly is sound? And how does sound reach your ears? Listen to this audiobook to find out!