Robert Snedden

Discusses the methods used to explore space, including telescopes, satellites, and probes.

Text, maps, and mazes follow the journeys of ten explorers, including Leif Erikson, Marco Polo, Vasco da Gama, David Livingstone, and Neil Armstrong and "Buzz" Aldrin.

Provides information about various types of fossil fuels, including coal, oil, and natural gas, discusses the role of fossil fuels in the Industrial Revolution, and examines the impact of such energy sources on the environment.

The job of a navy is to control and defend the seas around its country's shores, to keep the sea lanes open and safe for merchant ships, and to protect the country's interests overseas. The crew of a navy warship may be called upon to face danger in a hostile environment far from home. It takes courage, skill, and teamwork to do this job. It also requires professionalism and people who take pride in their work"

Describes the process of digestion, including information on why a balanced diet is important, how the body breaks down food into nutrients, and ways to avoid digestive disorders.

Presents an introduction to cell division and genetics, looking at what happens when cells divide, and discussing the connection between chromosomes, genes and DNA.

"Covers the inventions and technology of the Ancient Roman Empire and how their ideas influenced technology today"--Provided by publisher.

Text and photographs on fold-out pages present over fifty microorganisms in, on, and around the human body as revealed under the power of the microscope.