Principles of pharmacology and toxicology -- Risk analysis and public perceptions of risk -- Water and soil pollution -- Airborne hazards -- Halogenated hydrocarbons and halogenated aromatic hydrocarbons -- Toxicity of metals -- Organic solvents and related chemicals -- Food additives, drug residues and other food toxicants -- Pesticides -- Mycotoxins and other toxins from unicellular organisms -- Animal and plant poisons -- Environmental hormone disrupters -- Radiation hazards -- Gaia and chaos: how things are connected -- Case study reviews.