Gr 6 Up-A serviceable overview of how DNA is used to convict the guilty and exonerate the innocent, as well as how it is being used to protect wildlife. Throughout, examples of how DNA has proven vital to famous cases, such as the 1993 World Trade Center bombing, are included. A chapter on some of the problems with DNA testing, such as proper training of technicians, concludes the book. The details on how testing is actually employed by law enforcement professionals should prove useful to those doing research, while the numerous examples should hold the interest of casual readers as well. The average-quality black-and-white photographs add little information; a few depict crime scenes. Source notes and a lengthy bibliography are appended.-Carol Fazioli, Gwynedd-Mercy College, Gwynedd Valley, PA Copyright 2005 Reed Business Information.