Geronimo Stilton's ancestor, Geronimo Stiltonoot, investigates a witness's claim of a moving mountain of ice.

Ruby Small's embarrassingly eccentric parents take her on a vacation to Norway where she acquires an unwanted pet, a glacier named Cecil, who finds a way to melt Ruby's heart.

"A wildlife biologist's shocking death leads to chilling discoveries about a home for troubled teens in Christine Carbo's haunting and compelling new crime novel set in the wilds of Glacier National Park. Glacier National Park police officer Monty Harris knows that each summer at least one person--be it a reckless, arrogant climber or a distracted hiker--will meet tragedy in the park. But Paul "Wolfie" Sedgewick's fatal fall from the sheer cliffs...

Eleven-year-old Melody Vega and her family visit Glacier National Park every summer, but this year Mel comes face-to-face with a terrifying grizzly bear.

Learn how glaciers grow, shrink, and move, shaping the world around them.