From Publishers Weekly
The newest Let's-Read-and-Find-Out Book demonstrates the strengths of this dependable series: an understandable question and clear exposition of the answers that never fail to help readers to think like scientists throughout. Series originator Branley carefully lays out a number of scientific theories that answer the question posed in the title, giving the most space to theories developed after the discovery of large amounts of soot and iridium in rock layers. Simont's well-placed drawings and watercolors carefully amplify and expand the text. Ages 10-up.
Copyright 1989 Reed Business Information, Inc.
--This text refers to an out of print or unavailable edition of this title.
From School Library Journal
PreSchool-Grade 2-- Branley tackles the mystery of what did in the dinosaurs in this addition to his popular science series. True to his intention, he provides a clear, easy-to-understand explanation of several possible causes for the dinosaurs' extinction. He includes disease, temperature change of the Earth, and even the idea that small animals devoured the dinosaurs' eggs as possible causes of death. About half the book is spent discussing the theory which claims that comet showers and the ensuing fires, ash, and dust killed the dinosaurs and their food sources. Simont's soft watercolor illustrations clearly depict, yet effectively tone down the ferocity of the subject matter for young readers. Although Branley states several times that no theory has yet been proven, the attention he gives to the comet/Nemesis theory implies it is a more valid, better-researched theory, as compared to the others which receive only a page or two of attention. He is also reluctant to question the theory; for example, how is it that mammals and some reptiles (such as turtles and alligators) survived the comet catastrophe, while dinosaurs and plants did not? Perhaps this is making a Tyrannosaurus out of a molehill, but implied messages can sometimes be as influential as obvious ones. --Cathryn A. Camper, Minneapolis Public Library
Copyright 1989 Reed Business Information, Inc.
--This text refers to an out of print or unavailable edition of this title.