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.
Taranto
In 1991 Taranto was declared a high environmental risk area by the Ministry of Environment. As a consequence of the pollutants discharged into the air by the factories in the area, most notably the ILVA steel plant, part of Gruppo Riva, Taranto is the most polluted city in Italy and western Europe. 7% of Taranto's pollution is produced by the public; 93% is produced by factories. In 2005, the European Pollutant Emission Register estimated dioxin emissions from the Taranto ILVA plant were responsible for 83% of Italy's total reported emissions.
Every year the city is exposed to of carbon monoxide and of carbon dioxide. In 2014, the Italian National Institute of Emissions and their Sources, state that Taranto stands third in the world behind China's Linfen, and Copşa Mică in Romania, the most polluted cities in the world due to factories' emissions.