Davies, Nicola. Tiny Creatures: The World of Microbes. Somerville, Mass.: Candlewick Press, 2014.
There are creatures so small that a billion of them can live in one teaspoon of soil. There are life forms so tiny that over 7 billion live on the skin of one person. Fortunately, most of them don’t harm us. Illustrated by Emily Sutton, this well-designed picture book will appeal to children 5 years old and up.