text: Earth's atmosphere is slowly starting to change due to the fact that chemicals and gases are being released from your very own car. As Amercia's population increases so do the risk of the the greenhouse gases, resulting in global warmming and the lost of some habbitats. "If the pattern persists .... it will have beneficial implications for carbon emissions and the environment, since transportation is the second largest source of America's emissions, just behind power plants",(Rosenthal 34). Stopping the usage of cars in our society will help protect not only ourselves but also the lives of those with whom you share with.