s and malfunctions from these existing units could cause it to take a century to get the ozone layer restored.Motor vehicles produce both nitrogen oxides and hydrocarbons. Nitrogen oxides are created when fuel is burned, and hydrocarbons are emitted when fuel fails to burn (Conservationist 17). Automobiles, lawn mowers, chain saws, and powerboats are examples of petroleum pollution. There were 189.4 million vehicles registered nation wide in 1993. In 1977 142.1 million vehicles were registered nation wide. Trucks alone have increased by 40% in the past ten years (Conservationist 17). States are requiring that tailpipe emissions meet established standards, thur inspection of motor vehicles. Many States require that gasoline pumps have a vapor recovery unit on them while refueling at service stations. James Close, an environmental specialist, says, “States have joined other States to adopt a tougher motor vehicle emissions standard for hydrocarbons, nitrogen oxide, and carbon monoxide ( Conservationist 18)Industrial pollutants were primarily a problem well into the 20th century. Tall smokestacks capable of despensing pollutants over large areas were wide spread. Scientist has also traced the surprising levels of air pollution in the far north. This has become known as the Arctic Haze. This haze has been traced back to industrial centers in Europe. Transboundry air pollutants were taken up at the Landmark Nations Conference on the Humans Environment. Participants did little to address the issue of air pollution specifically (Thin Blue Line 7). They did affirm the principle that governments are Watson 3obliged to quote, “ insure that activities within there own jurisdiction or control do notcause damage to th...
