Environment of Pakistan
The Air pollution is the release of chemicals and particulates into the atmosphere. Common gaseous pollutants include carbon monoxide, sulfur dioxide, chlorofluorocarbons (CFCs) and nitrogen oxides produced by industry and motor vehicles. Photochemical ozone and smog are created as nitrogen oxides and hydrocarbons react to sunlight. Particulate matter, or fine dust is characterized by their micrometre size PM to PM. The air in Karachi is rapidly polluted by automobile smoke, especially Rickshaws and Buses, industrial emissions, open burning of garbage, house fires, and other particles but the government and environment organizations seems non-serious to tackle the issue timely.
The two-stroke engines on rickshaws and motorcycles are one of the major polluters of air in Karachi and the rest of Pakistan. The two-stroke engines as well as defective or unturned vehicles are major polluters with carbon dioxide emissions. Two-stroke engines as well as defective vehicles using substandard lubricant are major emitters of sulfur dioxide and smoke. Automobiles operating on compressed natural gas and liquefied petroleum gas are major air polluters.
Air Pollution Control Act
This was the first act from the government that made U.S. citizens and policy makers aware of this global problem. Unfortunately, this act did little to prevent air pollution, but it at least made government aware that this was a national problem. The act allowed Congress to reserve the right to control this growing problem.
The Air Pollution Control Act of 1955 was the first federal law regarding air pollution. This act began to inform the public about the hazards of air pollution and detailed new emissions standards. Public opinion polls showed that the percentage of Americans who regarded air pollution as a serious problem almost doubled from 28% in 1965 to 55% in 1968 with the addition of all the amendments made to the original Air Pollution Control Act of 1955.