Snedden, Robert

This book explains the importance of nutrition and shows how things like appetite and the foods we want and need change during our lives.

Photographs and illustrations introduce the inventions and technology used by the ancient Greeks, describing how those ideas influenced later technology.

An illustrated overview of the work and discoveries of conservationists and environmentalists throughout history, discussing John Muir, James Hansen, Wangara Maathai, and others, and including a time line and other resources.

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

An introduction to materials science, looking at the technology used to make different materials or to shape natural materials into usable forms, discussing the science of superconductors, polymers, alloys, ceramics, and glass, and looking at materials used in food, medicines, on the farm, in space, and in the microworld.

Looks at some of the tools and methods used by scientists to explore space, discussing telescopes, space probes, satellites, and robots, and providing details of specific missions.

Explains how simple cell building blocks create a variety of different forms of life, and clarifies how scientists organize these differences for the purpose of studying them.

Explores the work performed by scientists who study living things. Details the tools and techniques they use and discusses how their work helps us better understand the planet. Includes full-color photographs, a timeline, a glossary, and further reading sources.