They are far too small to be seen with the naked eye, but bacteria are one of the most widespread forms of life-and one of the oldest.This series takes readers (Ages 8-12) on a historical journey, examining how people coped in the past and how they developed ingenious ways to make life safer and less unpleasant. Each book features full-color cartoon-style illustrations and hilarious speech bubbles to heighten interest, making the series attractive...