Toxicology is a field of science that helps us understand the harmful effects that chemicals, substances, or situations, can have on people, animals, and the environment. Some refer to toxicology as the “Science of Safety” because as a field it has evolved from a science focused on studying poisons and adverse effects of chemical exposures, to a science devoted to studying safety. Toxicology uses the power of science to predict what, and how chemicals may cause harm and then shares that information to protect public health. When talking about toxicology it is important to keep a few things in mind.