Bill Nye the Science Guy's great big book of tiny germs

Germs, germs, everywhere! Did you know that: Some germs are good for you, or even delicious? There are more germs on Earth than all other living things combined? Your body is constantly fighting germs, even when you aren't sick? Now you know! Find out how more about germs and how to stay healthy, with eleven cool experiments. Provides readers with an informative look at germs, the various types, and the different purposes they serve (both good and bad), enhanced with illustrations and eleven easy-to-follow experiments.