pollution in paris

Each day on the radio you can hear what the level of pollution is like and sometimes the level increases.

I think that the main reasons are cars , buses , scooters and any kind of engine with a motor. In theoutskirts of Paris you can see a cloud of pollution. You don't see it everyday but often.
I also think that if the people continue to use too many engines with motors then one day you might become sick.
When you hear the level every morning you are afraid because it the highest level in France.

What is the solution?
it's very difficult to find a solution because everybody uses cars and one day a year there is a day without cars so people take buses.
Generally buses use biofuel because it's better for the population in Paris and so the pollution is reduced.
Pollution is responsible for global warming and also produces the greenhouse effect.
I think that in order to reduce pollution, people in Paris should change their cars or just fuel.

Why?
First of all because there are some different fuels like vegetable oil or bioethanol and to reduce pollution it's better to use this kind of fuel.

Then if the government imporves France's economy farmer will have more work.

It's important to know that if the population doesn't reduce its fuel comsumption global warming will get worse.