Publisher Summary Children are not miniature adults. Though they are continually developing from conception to adulthood, different parts of their bodies develop at different times and they are, therefore, more susceptible to toxic attack at some stages of development than others. Children are continually exposed to toxic chemicals in utero before birth and in the home, when outdoors, and at school during their growth years. Fetal toxicants, viz, dioxin, methylmercury, PCBs, and DDE, the metabolite of the pesticide DDT are introduced briefly. Air and water pollution, food additives and exposure during packaging are focused with regard to childhood effects. Pesticide exposure in utero may contribute to a ‘silent pandemic’ of developmental neurotoxicity.