text: over all, i think that students should do at least 15 minutes of community service a day, so that the town is clean.All of these articles share the central idea of minimalizing pollution where most of it comes from: cars. In the first source, they talk about how a city was created where cars are nonexistant, and people walk everywhere, a city called Vauban. This city is in Germany and consists of 5,500 people in a sqaure mile area. Doing so in the creation of this city has cut down a major part of pollution in the surrounding area.