Although some communities welcome environmental cleanup, others reject official advice about the hazards of living in a high-lead environment. Discusses a predictive model developed by the Environmental Protection Agency and its ability to provide new guidance. Examines mechanisms for human exposure to lead, in particular, the risk to children.…

Examined is the development of resistance and secondary pest outbreaks and disease vectors. Two examples are considered in depth. A list of 42 references is included. (CW)

Environmental training updates employees on state and federal environmental regulations. It helps to keep companies in compliance with regulations, keeps communities safe from hazardous waste, and keeps employees healthy. (JOW)

Discusses health risks and environmental repercussions associated with household disinfectants and cleaners. Provides alternatives that meet the "Green Cross" certification for biodegradability and safety. A chart lists hazardous ingredients in common household cleaning products. (MCO)

Preschoolers made judgments about solutions in which substances were dissolved. Preschoolers (1) distinguished visual appearance from underlying reality; (2) recognized the conservation of taste, smell, and dangerous properties; and (3) by age five recognized that matter can be decomposed into pieces too tiny to be seen by the naked eye. (BC)

At an Ohio school that serves 150 multiply handicapped children, maintenance staff spread some old insecticide around a storage shed in a misguided attempt to kill rodents. Cleanup efforts cost over $15,000. Advises schools to examine their policies regarding pesticides. Lists information sources and the availability of a booklet on pest control.…

Advises schools on how to identify and handle toxic mold in their buildings. Addresses the extent of the problem, offers a four-step approach toward remediation, and suggests questions to ask when mold has been identified. (EV)

According to the Environmental Protection Agency (EPA), Americans generate approximately 1.6 million tons of hazardous household waste every year. When most people think of hazardous waste, they generally think of materials used in construction, the defense industry, mining, manufacturing, and agriculture. Few people think of hazardous substances…

Planning and prevention is the best defense against fires in school. This is particularly true in the science laboratory due to the presence of flammable gases, liquids, combustibles, and other potential sources of fire. Teachers can prevent fires from starting by maintaining prudent lab practices when dealing with combustible and flammable…

A simple procedure to quickly screen different consumer products for the presence of lead, cadmium, and other metals is described. This screening technique avoids expending a lot of preparation time on samples known to contain low levels of hazardous metals where only samples testing positive for the desired elements need to be analyzed…

The disposal of hazardous chemicals and chemical containing products is of much concern and there is a need for a document that describes the hazards of a chemical, to consider the precautionary measures to be taken. Many classic demonstrations however cannot be performed due to safety concerns since sometimes chemicals are deemed too hazardous or…

A successful microscale fusion of semicarbazones, or transformation of carbonyl compounds into semicarbazones is performed through an effective grinding system. The donning of protective attire is advised to avoid the hazardous effects of semicarbazide hydrochloride during the fusion process.

The hazards of silver used in the laboratories are described for the benefit of the students and the teachers. The exposure limits and symptoms due to acute exposures are also mentioned.

The hazards caused by calcium used in the laboratories are described. The exposure limits and symptoms of acute exposures are mentioned.

Rural communities are increasingly being faced with the prospect of accepting facilities characterized as "opportunity-threat," such as facilities that generate, treat, store, or otherwise dispose of hazardous wastes. Such facilities may offer economic gains through jobs and tax revenue, although they may also act as environmental "disamenities."…