Air Pollution What is it? Causes? Indoor –Examples? Outdoor –Examples?
Outdoor Air Pollution There are two types of outdoor air pollution: –Particulate pollution (Black Carbon and other) –Noxious Gases
Pollution - Particulates Coal, wood, and fossil fuels release gases and tiny particles into the air when burned. Mining and some agricultural practices also emit particles. The exhaust from burning fuels in automobiles, homes, and industries release particles.
Air Pollution Noxious gases sulfur dioxide carbon monoxide nitrogen oxides other chemical vapors is pollution. Form smog and acid rain.
Smog Exhaust of fossil fuel-burning engines in cars, trucks, coal power plants, and industrial manufacturing factories. VOCs - man-made sources – gasoline, paints, solvents, pesticides
Smog Smog surrounds the Angel Monument in Mexico City, Mexico. The absence of wind circulation prevents pollution near the earth’s surface from escaping.
Smog In high enough concentrations, these particles can reduce visibility and cause many physical ailments in humans: –Coughing –Headaches –Sneezing –Eye irritation –Chest pain –Respiratory failure
Air Passages Infants, elderly, and those with chronic lung ailments may experience: –Asthma –Emphysema
Air Pollution Air Pollution is one of the easier types of pollution to control. For example: –Smokestacks fitted with filters to catch particles –Autos designed to meet tougher emission standards
Air Pollution Not all air pollution is caused by humans. Examples: –Volcanic ash –Smoke from naturally occurring forest fires –Salt spray from oceans
How to Decrease Air Pollution Transportation Transportation Drive a car that gets at least 35 miles a gallon, Walk, bicycle, use mass transit Energy Energy Replace incandescent light bulbs with compact fluorescent bulbs, Make your home more energy efficient Buy only energy efficient appliances. Waste Recycle newspapers, aluminum, and other materials. Plant trees and avoid purchasing products such as Styrofoam that contain CFCs. Support much stricter clean air laws and enforcement of international treaties to reduce ozone depletion and slow global warming. Earth is everybody's home and nobody likes living in a dirty home. Together, we can make the earth a cleaner, healthier and more pleasant place to live. EPA.gov EPA.gov