Necessity for effective programming techniques -- Air quality (outdoor (ambient) and indoor) -- Built environment : healthy homes and healthy communities -- Childrens' environmental health issues -- Environmental health emergencies, disasters, and terrorism -- Environmental and occupational injury control -- Food security and protection -- Health care environment and infection control -- Insect control, rodent control and pesticides -- Recreational environment including recreational water facilities -- Sewage disposal systems -- Solid waste, hazardous materials and hazardous waste management -- Water quality and water pollution.