Reviews

Gr 5 Up‘These two books introduce key concepts of science by exploring their development, applications, and relationships to scientific knowledge as a whole. Photosynthesis explains the process; the history of discoveries leading to current understanding of photosynthesis; and related issues such as acid rain, the greenhouse effect, and the use of basic materials that are directly or indirectly dependent on photosynthesis. The authors also explore the topic as an important key to our future. Symbiosis covers mutualism, commensalism, and parasitism, and gives numerous examples of these important partnerships. Further chapters consider the symbiotic relationships that humans have with animals, plants, fungi, and microorganisms and concerns that scientists have that "emerging diseases," such as Ebola, might become the world's next great plague. The authors also discuss the possibility of "alien symbionts" being introduced through space exploration. These books are well researched and interesting and the format is inviting for both general-interest reading and research. Scientific terms, which are defined in context as well as in the glossary, are highlighted in boldface type. The high-quality, full-color photographs have informative captions. The lists for further reading include recently published books and an annotated listing of Internet resources.‘Carolyn Angus, The Claremont Graduate School, CA