chapter 1 Principles of pharmacology and toxicology -- chapter 2 Risk analysis and public perceptions of risk -- chapter 3 Water and soil pollution -- chapter 4 Airborne hazards -- chapter 5 Halogenated hydrocarbons and halogenated aromatic hydrocarbons -- chapter 6 Toxicity of metals -- chapter 8 Food additives, drug residues and other food toxicants -- chapter 9 Pesticides -- chapter 10 Mycotoxins and other toxins from unicellular organisms -- chapter 11 Animal and plant poisons -- chapter 12 Environmental hormone disrupters -- chapter 13 Radiation hazards -- chapter 4 teen. Gaia and chaos: how things are connected -- chapter 15 Case study reviews.