text: In recent years, the environment has become a worldwide concern; one of the advantages to limiting car usage is that it will positively impact the environment. Today, people all over the world are paying attention to what they can do to help the environment, meaning that this is an advantage that will appeal to a widespread audience. One way that limiting car usage will help is that it will reduce greenhouse gas emissions. In Elisabeth Rosenthal's essay "In German Suburb, Life Goes On Without Cars", she writes, "Passenger cars are responsible for 2 percent of greenhouse gas emissions in Europe ... and up to 50 percent in some car-intensive areas in the United States". By limiting the usage of cars, the amount of greenhouse gases being emitted into the world would decrease substantially. While the idea that everyone would stop using their cars and the gas emissions caused by them would disappear completely is unrealistic, the prospect that a majority of the emissions could do so is perfectly reasonable. The reduction of these emissions would mean that the air quality would increase and be overall healthier for both all the world's population and all the wildlife across the world. Robert Duffer provides another example of how less car usage would impact the environment in his essay, "Paris bans driving due to smog". According to the article, an intense smog had covered Paris for five days, when the city decided to ban car usage over the course of two days. The cause for the smog was thought to be the high use of diesel fuel in France, with 67 percent of cars using it over gasoline, about 14 percent higher than the rest of Western Europe. The plan for the ban had been that cars with even-numbered license plates to not be used the first day and for ones with odd-numbered license plates not to be used the next day. In actuality, cars with odd-numbered plates were never banned from driving since the smog had cleared just after the first day. This shows the impact of limiting car usage. In just one day, a smog that was comarable to the one in Beijing, China, one of the most polluted cities in the world, was removed considerably after just half the normal amount of cars were used over the course of a day. If this was used all over the world, the result would be even more significant. This evidence supports that limiting car use is good for the environment in more ways than one.