Reviews

By the end of the book, Davies and Sutton have beautifully made the case that microbes are "the invisible transformers of our world - the tiniest lives doing some of the biggest jobs." Both Davies's tone and the charming retro-ish watercolor illustrations by Sutton seem likely to please young children by balancing repetition and flights of fancy.
-The New York Times

Sutton's large-scale illustrations help children to visualize microorganisms and processes that are too small to see. . . . A handsome and rewarding picture book about the power of "tiny creatures."
-Booklist (starred review)

Very little information is available for this age group about these microscopic creatures, making this an especially welcome introduction.
-Kirkus Reviews (starred review)

This really is an enjoyable beginner's look at these miniscule organisms and the effect they can have on everything from our bodies to the soil to the clouds in the sky.
-School Library Journal (starred review)