The author suggest that communities should reconsider land use policies because Americans are taking more and longer trips, often to shop. Also, with the report, the nonprofit group Environment Defense tries to build support for government policies aiming at curbing greenhouse gases, including a system that would cap carbon dioxide emissions but allow companies and utilities to trade credits, mirroring Clean Air Act rules that govern sulfur dioxide, which causes acid rain. The author mentions that carbon dioxide emissions from vehicles are disproportionately high in the United States for two primary reasons. The first is U.S. drivers average 11,000 miles per year, 29 percent above the global average, and second is U.S. autos consume more fuel, emitting 15 percent more carbon dioxide per mile than the average vehicle in the rest of the world. As far as I can see, cars are one of the biggest creators of carbon dioxide gas in the air. The burning of fuel in cars and trucks and the emissions created as a result of this burning is causing global warming to increase on a daily basis. However, I highly recommend people should try carpooling with friends or co-workers because by choosing to commute in larger groups with other individuals via a carpool, a person can dramatically reduce their carbon footprint on a daily basis. Fewer cars on the highway equal less emissions released into the atmosphere. Thus, carpooling is an earth