1. Promoting Environmental Health

2. Impact of Overpopulation
Impact on other species
Impact on our food supply
Land degradation and contamination of drinking water
Excessive energy consumption
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3. Overpopulation Factors that Affect Population Growth
Fertility rate refers to the number of births a woman has by the end of her reproductive period.
U.S fertility rate is just over two births per woman.
Differing Growth Rates
India is expected to have the largest growth by adding another 600 million people by 2050.
Zero Population Growth (ZPG)
This is the idea that each couple should produce only two offspring.
Over 20 countries have a ZPG.
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4. Air Pollution
Pollutants are either naturally occurring or anthropogenic (caused by humans).
The greatest source of air pollution is environmental tobacco smoke.
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5. Air Quality Index (AQI)
The AQI is a measure of how clean or polluted the air is on any given day.
The AQI focuses on health effects that can happen within a few hours or days after breathing polluted air.
Index runs from 0 to 500, with higher values having a greater level of air pollution and health risk.
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6. Air Quality Index (AQI)
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7. Indoor air can be 10-40 times more hazardous than outdoor air.
Indoor Air Pollution
Indoor air can be times more hazardous than outdoor air.
Indoor air pollution comes primarily from woodstoves, furnaces, passive cigarette smoke exposure, asbestos, formaldehyde, radon, and lead.
Mold is an emerging form of air pollutant.
Prevention focuses on source control, ventilation improvements, and air cleaners.
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8. Ozone Layer Depletion
The ozone layer protects the planet and its inhabitants from ultraviolet B (UVB) radiation.
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9. The Enhanced Greenhouse Effect
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10. Reducing Air Pollution
Air pollution and climate change problems are rooted in our energy, transportation, and industrial practices.
Reducing consumption of fossil fuels, shifting to alternative energy sources, improving gas mileage, and using mass transportation are crucial to reducing air pollution.
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11. Water Pollutants & Contamination
Among the pollutants causing the greatest potential harm are
Gasoline and petroleum products
Chemical contaminants
Polychlorinated biphenyls
Dioxins
Pesticides
Lead
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12. Land Pollution
Per day, each person generates more than 4.5 pounds of municipal solid waste (MSW), totaling about 243 million tons each year.
About 90% of waste is recyclable, but only 33.8% of MSW is recycled or composted.
Strategies to reduce MSW include source reduction, recycling, composting, and combustion with energy recovery.
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13. What's in Our Trash?
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14. How Much Do We Recycle?
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15. Hazardous Waste
Hazardous waste is toxic waste that poses a hazard to humans or to the environment.
Many types of waste are now banned from land disposal or are being treated to reduce toxicity before disposal.
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16. Disposal of nuclear waste is extremely problematic.
Nuclear Power Plants
Proponents believe it is a safe and efficient way to generate electricity.
Disposal of nuclear waste is extremely problematic.
A nuclear meltdown can occur when the temperature in the core of a nuclear reactor increases enough to melt both the nuclear fuel and its containment vessel.
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17. To protect your hearing
Noise Pollution
To protect your hearing
Play home and car stereos at reasonable volume.
Keep the volume down on your iPod or other MP3 device.
Wear earplugs when using power equipment.
Close windows to establish a barrier between yourself and outside noise.
Wear earplugs when attending loud concerts, and clubs.
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