And the winner is...

Cougar Crossing:How Hollywood’s Celebrity Cougar Helped Build a Bridge for City Wildlife

by Meeg Pincus; illustrated by Alexander Vidal

Butterfly for a King 

by Susan Roth and Cindy Trumbore; illustrated by Susan L. Roth

Nano: The Spectacular Science of the Very (Very) Small 

by Dr. Jess Wade, illustrated by Melissa Castrillón

The Great Stink: How Joseph Bazalgette Solved London’s Poop Pollution Problem

by Colleen Paeff, illustrated by Nancy Carpenter