The Horn Book Guide

SCIENCE

Gagne, Tammy

Polar Bears Matter

48 pp. | ABDO/Core Library | January, 2016 | Library ISBN 978-1-68078-013-0 $22.95

(4) 4-6 Bioindicator Species series. In a series covering species that act as "canaries in a coalmine" for particular habitats, this book discusses how threats such as bioaccumulation of pesticides, global warming, and oil spills have decreased polar bear populations, and why monitoring them is important. Photos, maps, and graphs break up the text; researchers may find the sections with reading-comprehension questions, prompts, and links distracting. Reading list. Glos., ind.

Reviewer: Bridget McCaffrey