text: To begin with, car usage is becoming a major issue for the world today due to pollution. Greenhouse gasses are being leaked into the atmosphere each day to cars' transmission fuels. According to Source 1, it states, "Passenger cars are responsible for 12 percent of greenhouse gas emissions in Europe... and up to 50 percent in some car-intensive areas in the United States." These gasses damage ecosystems, and leave many environments unstable due to its destruction. It can also effect human beings, also. According to Source 2, the passage says, "Paris typically has more smog than other European capitals... Last week Paris had 147 micrograms of particulate matter per cubic meter compared with 114 in Brussels and 79.7 in London, Reuters found." This pollution that is occuring around the world can damage our health if not taken care of. By limiting car usage, it would not only benefit the environment, but our health also.