The science of colors is hard at work all the time--from ultraviolet light to the baby blue tint of the sky. Readers will learn tons of interesting scientific facts about color and its whys and hows--like why blood is red, how hippos keep cool, and how some animals can change color to hide from predators. Bursting with incredible illustrations and some seriously cool science, this book is sure to dazzle both nature lovers and reluctant readers alike.