text: As the majority of people learned in grade school, greenhouse gases aren't such a great thing and are even destroying the planet. Stepping away from your car could decrease the amount of these deadly gases we put into our atmosphere. in the first article Rosenthal says "Passenger cars are responsible for 12 percent of greenhouse gas emmision in Europe, and up to 50 in some car-intensive areas in the United States." If the output is really that high and we stop using cars as much imagine the impact it could have if this happened world wide. in the second article Duffer was talking about how Paris had to ban cars because the smog, an effect of greenhouse gases, was too thick. towards the end he said that a few days of the car ban reduced the amount enough to where they could lift the ban. the smog was said to rival China's, and you see that on the news constantly so if only a few days made it significantly better then why can't we try it out?