It's Raining Poison Lotem Halevy Vancouver Talmud Torah High School Floor Location : J 11 V

I chose to do my science fair project on a controversial issue that is potentially destroying our planet: Pollution. Since this is such a broad topic I decided to narrow it down to the two main pollutants: nitric oxide (NO) and sulphur (SO2). Each gas comes from a different source that harms the environment in a different way. Nitric oxide comes from the waste of cars. Overtime it builds up and ruins the environment and the ozone layer. Sulphur is a gas that is released by factories that burn fossil fuels as a source of energy.

The purpose for my project is to find which gas is more harmful to the lungs. This information can be used at a later stage to assist individuals who suffer from poisoning and to help research. The main questions that the study will try to answer are:
a) Does an exposure of nitric oxide (NO) affect a cow lung that is put in a Petri dish? Will the length of the exposure (2 hours or 24 hours) matter?
b) Does an exposure of sulphur (SO2) affect a cow lung that is put in a Petri dish? Will the length of the exposure (2 hours or 24 hours) matter?
c) Does an exposure of cow lung to both nitric oxide (NO) and sulphur (SO2) affect the lung? Will the length of the exposure (2 hours or 24 hours) matter?
To test this problem I constructed a method that showed the way that each of the gases (nitric oxide (NO) and sulphur (SO2) affects the lung.

Method A:
1. Cut a cow lung into pieces (6cm×6cm)
2. Place one of the pieces in a Petri dish with sulphur (SO2)
3. Cover the dish and let stand for 2 hours
4. Repeat step 2 and 3 twice (you should have 3 Petri dishes)
5. Repeat step 1-4 but for nitric oxide (NO)
6. Cut a cow lung into pieces (6cm×6cm)
7. Place three pieces of lung in separate Petri dishes with sulphur and nitric oxide
8. Let stand for 2 hours

Method B:
Same as Method A just replace the 2 hours in steps 3 and 8 above with 24 hours.
This project can demonstrate that the gases causing climate change affect not only the earth's atmosphere (and indirectly our bodies) but also directly affect vital systems in our bodies, such as the respiratory system and more directly, our lungs.