Written by a seasoned teacher, speaker, and writer in the field of chemistry, this text serves to provide a guide to the chemicals that make life possible and enrich the senses, as well as those that endanger it. This text combines the science and history of certain molecules and deals with the chemistry of each substance in an interesting and easily understandable manner. Topics covered include substances found in air and water, food, hydrocarbons, acids and alkalis, natural killers, unnatural killers, destructive molecules, pleasure molecules, natural healers, man-made healers, giant molecules, and vitamins.