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William Sanjour’s journal, “What do we know about hazardous waste and when did we know it?” describes hazardous waste as a waste (usually a solid waste) that has the potential to cause, or significantly contribute to an increase in mortality (death) or in increase in irreversible, or incapacitating reversing illness; or pose a substantial present or potential hazard to human health or the environment when improperly treated, stored, transported or disposed of, or otherwise managed. A hazardous waste is a waste that poses substantial or potential threats to public health or the environment and generally exhibits one or more characteristics of ignitable (i.e. flammable), oxidizing, corrosivity, toxic, radioactive, eco-toxic, and explosive. The main objective of Sanjour’s journal is to point out the dangers of hazardous waste in our environment and in the work place. He strongly believes that the prevalence of diseases induced by our environment factors varies geographically and with the economic status of individual countries. However, in the heavily industrialized and economically strong “developed” countries, pollution control, changes in technology and environmental legislation have substantially reduced human exposures to toxic agents over the last 20 years or so. Common environmental diseases in the developed world are lung cancer, skin cancer, legionnaire’s disease, giardiasis (chronic diarrhea), central and peripheral nervous system disease, chloracne and soft tissue tumors, liver disfunction, thyroid nodules, and asbestosis, according to the journal. When asked where toxic substances come from and where do they go, Sanjour responds, Toxic substances occur naturally and are also by-products of industry, transportation, and other human activities. The journal speaks of the importance of not being oblivious to the coming and going of these toxic agents. With this said, it helps to know where it comes from--- how and where it was made and when it was first...