Robots are machines that can be programmed to carry out a series of complex actions automatically or under the control of an operator. They come in all shapes and sizes, from mechanical arms and driverless vehicles to walking, talking, artificial people. Learn about how robots are helping humanity by doing jobs that are too dangerous for people, exploring places that humans cannot reach, and becoming our helpers and companions.

"Describes what life would be like without glass."--

Describes the hazards to being one of the many builders during the construction of the Hoover Dam, including the tough living conditions, the extreme heights, and the diverting of a river.

A skilled mechanic in 1930s Germany is offered a job on the most magnificent airship ever built, the Hindenberg. But dangers from flammable gas, storms and lightning are there. Follows the airship as it bursts into flame and investigates the cause of the disaster.

Discusses the process of becoming a fighter pilot during World War II and how dangerous it was.

What if we didnt have any dirt or soil? Its hard to imagine. The ground would look different and many of the plants, trees and animals we know today would disappear. Dirt, and or soil, supplies a surprising variety of raw materials for making things. Learn about the ways dirt and soil have been used by humans over the centuries, from cave paintings to crop farming, and the exciting prospects for dirt and soil we may see in the future. Where does...