text: It's often talked about in the news. Greenhouse gasses. Global warming. We hear about all the time and how it's affected by emissions of cars. How could we avoid it? Simple, we stop driving around so much. Cars in Europe are responsible for 12 percent of greenhouse gas emissions, and we in the United States make up 50 percent of it (Elisabeth Rosenthal, line 5). It's especially bad in Paris, where the gasses are so bad that there was 5 days of smog, only rivaled by Beijing, China the most polluted city in the world (Robert Duffer, line 14), which it's so bad in Beijing the citizens of the city have to wear masks covering their noses and mouths to protect themselves from the harmful gasses. It's horrible that people have to live in such horrible conditions.