1. Air Pollution Examples:
“any unwanted substance in the air that is at unhealthy levels”
Examples:
Gases
Pollen
smoke

3. Types of Air pollutants
Primary Pollutants
Secondary Pollutants
“Pollutants put in the air directly from human activities”
CO – Carbon Monoxide
NO2 - Nitrogen Oxides
PM - Particulate matter
SO2 - Sulfur dioxide
5. VOCs – Volatile Organic Compounds
Lead (Pb)
Ozone (O3)
“Pollutant that forms from the combination of primary pollutants or pollutants combining with naturally occurring substances”
1. Acid Rain (NO2/SO2 + rain)
2. Ground Level Ozone ( PP + UV)
3. Smog ( PP + VOC’s + UV)

4. Video link

5. Clean Air Act
The Clean Air Act of 1970 (CAA) is the comprehensive federal law that regulates air emissions from stationary and mobile sources. Among other things, this law authorizes EPA to establish National Ambient Air Quality Standards (NAAQS) to protect public health and public welfare and to regulate emissions of hazardous air pollutants.
Aggregate emissions of six common pollutants dropped 73% between 1970 and 2017.

6. Air Pollution Short Term Effects Headache Nausea
Irritation to the eyes,nose,throat
Tightness of the chest
Coughing
Upper respiratory infections – bronchitis,pneumonia
Long Term Effects
Emphysema
Lung cancer
Heart disease
Worsen weaker immune systems like older adults/children

7. Indoor Air Pollution!
The quality of air inside a home or a building is sometimes worse than the quality of the air outside.  Chemicals used to make carpets, building materials, paints, and furniture are major sources of pollution.

8. Sick Building Syndrome
“Buildings with poor air quality”
SBS is very common in hot places where buildings are tightly sealed to keep out the heat
(ex – Florida)
Mold tends to grow in the air ducts, ceiling tiles, carpets, and furniture

9. Common Indoor Air Pollutant Sources

10. Radon Gas Radon is a colorless, odorless, tasteless gas
It is Radioactive
From the decay or uranium
Can lead to CANCER (2nd leading cause of lung cancer in the US)
Seeps from the ground into your house through cracks and holes in foundations

11. Asbestos
Minerals that form in long, thin fibers and valued for their strength and resistance to heat
Insulation, fire retardant, building materials
Banned in 1970 – if inhaled can cut and scar the lungs which is called Asbestosis which can cause death
Must be removed from buildings

12. Noise Pollution “unwanted sound” Irritating, damages our hearing
Hearing loss has doubled in the US in the last 30 years!
About 12% of teens have permanent hearing loss.
One study found that people living in Africa had better hearing at the age of 80 than most Americans at 30 

13. Light Pollution Does not present a direct hazard to human health
Does negatively affect our environment
Dims our view of the night sky
Energy Waste!
Turtles confused!

14. Acid Precipitation
“precipitation such as rain, sleet, or snow that contains a high concentration of acids”
Secondary Pollutant
NO2 + rain = Nitric Acid
SO2 + rain = Sulfuric Acid
Can kill living things, decline or loss of plant and animal populations

15. Acid Precipitation

16. Acid Precipitation Affects on Soil and Plants
An increase in the concentration of acid is called ACIDIFICATION
This causes nutrients to dissolve and wash away by rainwater.
Aluminum and other toxic metals get released and absorbed by the roots of plants. This can damage the roots. It can also clog the pores on the surface of plants

17. Acid Precipitation and Aquatic Ecosystems
Aluminum that leaches from the soil runs into lakes and accumulates in the gills of fish and interferes with oxygen and salt exchange – suffocating them.
Quickly melting acid snow during the spring that accumulates in a lake is called ACID SHOCK. Affects the reproduction of fish and amphibians – fewer eggs and birth defects.

18. Acid Precipitation and Humans
Toxic metals such as Mercury and Aluminum can be released into the environment – like crops, water, and fish. This finds poisons the human body through Biomagnification.
It can also cause respiratory problems
Affect livelihood of fishermen
Dissolve calcium carbonate in common building materials and monuments.

19. International agreement?
Unfortunately the areas of the world that create the pollution are not always the ones to suffer it’s effects….
1991 US Air Quality with Canada and sulfur dioxide emissions in the US and canada