text: Pollution is one of the most problem that we have and want people to limiting car usage. Paris enforced a partial driving ban to clear the air of the global city. Mororists with even numbered license plates were ordered to leave cars at home or suffer a 2 22-euro fine $31 same applyed to odd-numbered plates in diffent day of the week. Almost 4000 were fined. Beijing, China is known as one of the most polluted cities in the world. Diesel fuel was blamed from France. Diesel make up 67% of vehicles in France, 53.3 % average of diesel engines in the rest of Westen Europe. We are trying to put greenhouse gas out in the world to make it less polluted in the world.