Human health and air pollution

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Human health and air pollution

  1. 1. Human Health and Air Pollution<br />7SCIENCE Mon., Feb. 14, 2011<br />
  2. 2. How is human health affected by air pollution?<br />Smog warnings<br />Cities<br />Children and elderly people should stay indoors<br />Athletes train outside<br />Adjust training schedules to avoid smog and dirty air conditions<br />
  3. 3. How dangerous is this dirty air?<br />Damaging to lung tissue, making people more susceptible to diseases like asthma <br />You may feel:<br />Burning eyes<br />Dry throat<br />Headache <br />Acid rain: when you inhale air from acid rain, the acid gets deposited in your lungs<br />More respiratory illness, less oxygen and makes your heart work harder!<br />
  4. 4. Particulate air pollution<br />Particulates:<br />Solid particles that are produced in the air, and are of different sizes<br />Less than 1/10ththe diameter of a human hair<br />Formed from burning coal and other fossil fuels<br />Affects normal breathing and can cause lung diseases<br />
  5. 5. Reducing air pollution<br />Pollutants and other contaminants in the air don’t stop when they reach the city or country borders or oceans<br />Float wherever the wind carries them<br />Even if one city or country reduces air pollution, than pollution from another city may travel on the wind<br />If cities and countries cooperate, then pollution can be reduced!<br />
  6. 6. Movement of air pollution in Asia<br />
  7. 7. Reducing air pollution<br />One solution: Scrubbers!<br />Coal has a lot of sulfur in it<br />Review: What type of smog is produced from this process of burning coal?<br />When coal is burned, smoke is formed, and particulates may be released <br />Many power plants have scrubbers,which can lower the acidity of the smoke and remove the particulates<br />Another solution: Alternative or renewable energies!<br />

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