(3) 4-6 Illustrated by Stephanie Yue. Human Megan works alongside Mousenet, an underground society of intelligent mice committed to saving the planet. When they learn that lumber company Loggocorp plans to cut down an ancient rainforest, the friends investigate who really has ownership rights to the rainforest in hopes of saving it from destruction. This third series entry is a rollicking, Rescuers-like adventure with an environmental message.

Reviewer: Morgan Stewart

(4) 4-6 Illustrated by Stephanie Yue. When a plot to expose the mouse world threatens Operation Cool It, the plan to reverse climate change hatched in Mousenet, Megan and Uncle Fred take the whole colony on a wild road trip to save their efforts. The premise remains overblown, but this sequel's plot moves along at a quick clip and endearing new characters are introduced. Soft black-and-white illustrations add to the whimsy.

Reviewer: Brittany Schlorff

(4) 4-6 Illustrated by Stephanie Yue. Ten-year-old Megan's inventor uncle gives her "the Thumbtop," a tiny mouse-size computer, before she moves to live with her estranged father. Actual mice take notice of the device and, after establishing contact with Megan, propose a deal: give every mouse a Thumbtop, and they will save the world from climate change. The warmly drawn characters help ground an imaginative if overblown premise.

Reviewer: Brittany Schlorff