Does any one have around 10 good topics to research in relation to outdoor air polution?

its for a project and i need to do a poster and a report but can't find any charts or a way to start the project.

Does any one have around 10 good topics to research in relation to outdoor air polution?
1. Pollution created by unauthorized colonies-smoke, open spitting, open garbage, open toileting.


2. Pollution caused by industries %26amp; their wastes


3. Disposing off litters (kura karkat) in Ganga, Yamuna.


4. Vehicular Pollution.


5. No proper health facilities causing germs in air-Biological Pollution in air.


6. Poisonous gases discharged from factories %26amp; works like arosols etc.


7. Garrage to repair %26amp; servicing vehicles in open.


8. Increase in population directly relates to air pollution.


9. Increment in airships causing a large air pollution.


10. Growth in advanced technology like Missile %26amp; other tests creating air pollution.