text: First I would like to talk about a huge problem we face as a society today and that is green house gasses. You may not think that these are a big deal put if left unchecked they caan become a huge problem. Passenger cars are responsible for 12 percent of greenhouse gas emisions in europe, and up to 50 percent in car-intensive areas. This can become a huge problem ranging from acid rain to climate change. An example of what polution can do to a city is in paris they are putting a partial ban on cars because of how how bad there polution is. There was a huge smog problem because green house gasses were being trapped because of hot days and cold nights.