Adventures of Riley #4: Polar Bear Puzzle

An award-winning, innovative 12-book series that captures the wonder of conservation through a blend of photography, illustration, fiction, and nonfiction.

Riley and family fly north to Churchill, Canada, to watch polar bears hunt seals from the ice of the Hudson Bay. There's just one problem: no ice! For polar bears, no ice means no seals, and without food, the bears can quickly become hungry, weak, and dangerous! It's a race against time as everyone searches for clues to this puzzling climate mystery. Will the ice freeze in time -- or at all? And will the polar bears finally eat again?