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Environmental hazards

  By M. Bilal Latif  
Nowadays one issue is discussed in media that is global warming. How we can control global warming. Some meteorologists point out that many natural controls could prevent extensive global warming. Increased temperatures would increase the water evaporation rate and promote more cloud formation and rains. Thus, inland regions might become fertile. Increased cloud formation would also reduce the amount of sunlight that hits the surface of the earth. Everyone is familiar with the cooling effects of a daytime cloud cover. At night, clouds work in the opposite way, containing heat against the land surfaces.
Another major climate controlling force is volcanic activity. A volcanic eruption spews enormous amount of particulate matter into the atmosphere, and these particulates reflect incoming sunlight back out into space. The "Mt. Pinatubo" eruption caused many parts of the world to experience the coldest weather in recent history during the winters of 1992 through 1994.
During the industrial revolution, massive amounts of human-made particulate matter were released into urban atmosphere. Another factor that could effect global warming is the release of sulphuric acid aerosols, tiny "so2" reacts with moisture, to form a haze that reflect part of the incoming solar radiation back to space.
Oceans rocks are massive reservoirs for "co2", the main icon for global warming. Some scientists believe these reservoirs are nearly exceeding their limits, making them unable to store "co2" as quickly as it is produced. According to new research the level of co2, is now 27% higher than at any point in the last 650,000 years. Co2 levels began to rise with the industrial revolution.

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