Gr 4-7-Solid introductions to two key scientists. Weinberg covers the life of one of the preeminent cancer researchers who has spent years searching for the genetic causes of the disease. Severs and Whiting capture readers' attention by beginning with an explanation of how DNA fingerprinting has been used to free falsely convicted individuals from prison. The authors then go on to explain how Avery's research laid the groundwork for it. The text relies heavily on Rene Dubos's The Professor, the Institute, and DNA (Rockefeller University, 1976). In both books, the layout is easy to read and includes a handful of captioned, full-page, black-and-white photographs. These titles contain just enough anecdotal information to keep students reading. Both lists for further reading are for adults.-Maren Ostergard, Bellevue Regional Library, WA Copyright 2002 Cahners Business Information.