Polar Bear Alert - DK READERS Author:Debora Pearson Written by leading children's authors and compiled in consultation with leading literacy experts, DK Readers are an innovative range of graded readers combining a highly visual approach with stories that children will want to read. — Polar Bear Alert is a virtual visit to Churchill, Manitoba, the Polar Bear Capital of the World-and a look ... more »at the threats posed to these animals by climate change.« less