text: Paris has had some pollution problems, because of this tey enforced a partial driving ban to clear the air of the global city. People that owned cars would be on a rotation. Even number license plates would drive on day and not the next, same when for the odd number plates. It took almost 5 days to life the smog. A good reason why are not so good to the envoirment no matter how we change them. Did you know Beijing, China is one of the most polluted cities in the world.