text: ""after five -days of intesifying smog...[the smog] rivaling Beijing, China, which is known as one of the most polluted cities in the world.""paris enforced a partial driving ban to clesr the air of the global city." and with all this "paris had 147 micrograms of particulate matter (pm) per cubic meter compared with" "79.7 in London". Ok London did a week without cars because of smog but with all the pollution from car emissions that they did not use that week was a lot when u facter in that they had as crapy air as Beijing, China,and they only got rid of half there cars for they week. Imagine how mutch cleaner are air would be if we got rid of all are cars for just a week. By then we would be used to it so even bring the cars back that right there would keep making are air clean.