Do Now: Video Clip: EPA PSA on Indoor Air Quality 1) How are our own homes dangerous to our health? 2) List three household items that could cause harm. T and T

Aim: Why are our homes hazardous to our health? Ms. Katzoff February 11, 2013

Indoor Air Pollution (IAP) Is a Serious Problem Developing countries – INDOOR burning of wood, charcoal, dung, crop residues, and coal. – Poor suffer the greatest risk

Burning Wood Indoors in India

Burning Wood Indoors in U.S.

Indoor Air Pollution (IAP) Is a Serious Problem Developed countries – Indoor air pollution is greater than outdoor air pollution Why? – 11 of the most common air pollutants higher inside than outside – Greater in vehicles than outside – We spend 70–98% of our time indoors or in cars

Pause…Write… Who is most at risk for indoor air pollution, people living in developing countries or developed? Explain.

Do you understand the difference between IAP for the developing vs. developed world?

Who is at greatest risk from indoor air pollution? – Children under 5 and the elderly – Sick – Pregnant women – People with respiratory disorders or heart problems – Smokers – Factory workers

Dangerous Indoor Pollutants Four most dangerous: – Tobacco smoke – Formaldehyde – Radioactive radon-222 gas – Very small particles…memory check: what are they called? Sources of these pollutants Human health risks

Indoor Air Pollutants Pesticide residue Pb particles Living organisms and their excrements E.g., Dust mites and cockroach droppings Airborne spores of molds and mildews

Fig , p. 482 Chloroform Source: Chlorine- treated water in hot showers Possible threat: Cancer Para-dichlorobenzene Source: Air fresheners, mothball crystals Threat: Cancer Tetrachloroethylene Source: Dry-cleaning fl uid fumes on clothes Threat: Nerve disorders, damage to liver and kidneys, possible cancer Formaldehyde Source: Furniture stuffing, paneling, particleboard, foam insulation Threat: Irritation of eyes, throat, skin, and lungs; nausea; dizziness 1,1,1-Trichloroethane Source: Aerosol sprays Threat: Dizziness, irregular breathing Styrene Source: Carpets, plastic products Threat: Kidney and liver damage Nitrogen oxides Source: Unvented gas stoves and kerosene heaters, woodstoves Threat: Irritated lungs, children's colds, headaches Benzo- -pyrene Source: Tobacco smoke,woodstoves Threat: Lung cancer Particulates Source: Pollen, pet dander, dust mites, cooking smoke particles Threat: Irritated lungs, asthma attacks, itchy eyes, runny nose, lung disease Radon-222 Source: Radioactive soil and rock surrounding foundation, water supply Threat: Lung cancer Tobacco smoke Source: Cigarettes Threat: Lung cancer, respiratory ailments, heart disease Asbestos Source: Pipe insulation, vinyl ceiling and fl oor tiles Threat: Lung disease, lung cancer Carbon monoxide Source: Faulty furnaces, unvented gas stoves and kerosene heaters, woodstoves Threat: Headaches, drowsiness, irregular heartbeat, death Methylene chloride Source: Paint strippers and thinners Threat: Nerve disorders, diabetes

Pollutant Activity Each table will be given a different IAP fact sheet. Using the information you will complete the IAP chart for your pollutant. Fill in your pollutant on the IAP chart on the board. Standards: CC #7

Summary: In your groups, come to a consensus about whether or not the product is worth the risk of using? Explain your answer.

Do you understand how harmful IAP are to your health?

Summary: What are some steps you could take to prevent indoor air pollution, especially regarding the four most dangerous indoor air pollutants?

Homework: Read pages Case studies are important! Air pollution test Friday 2/15.