"I told my three sons stories about germs more than fifty years ago as fanciful bedtime tales." So begins this charming collection of poems written by Nobel Prize-winning scientist Arthur Kornberg to help us learn about the germs that help and harm us. These rollicking, entertaining, and informative poems have been illustrated with witty and amusing watercolors and the book also contains electron micrographs and a glossary for the child who wants to go deeper into the world of microbiology.