The Horn Book Guide

SCIENCE

Bortz, Fred

Collision Course!: Cosmic Impacts and Life on Earth

72 pp. | Lerner/Millbrook | April, 2001 | Library ISBN 0-7613-1403-2 $$23.90

(4) 4-6 The tiny (but real) possibility that a major asteroid or comet impact could occur is a frightening prospect. Though the text is somewhat dry and wordy, Bortz provides a calm, reasoned, and detailed discussion of impacts, covering the evidence pieced together by geologists, a recent comet impact on Jupiter, and the methods used to predict our chances of getting hit. Illustrations range from artistic renditions to computer-generated images. Bib., ind.

Reviewer: Danielle J. Ford