A timely and simple explanation of the science behind germs, from the #1 science author for kidsGerm Theory for Babies is an engaging, basic introduction for youngsters (and grownups!) to the complex questions of what germs are and how they spread. Full of scientific information and written by experts, this newest installment of the Baby University board book series is perfect for enlightening the next generation of geniuses about the science of germs. After all, it's never too early to become a scientist!