The natural greenhouse effect is a phenomenon created by the heat energy radiated by the sun and greenhouse gases (water vapor, carbon dioxide, methane, nitrous oxide and halocarbons) normally present in the atmosphere. Sunlight passes through the atmosphere, warming the Earth; in turn, the Earth radiates this energy back towards space. As sun's energy passes through the atmosphere, greenhouse gases absorb part of the energy, while the remainder escapes into space. This means that some of the sun's energy becomes trapped - thus making the lower part of the atmosphere, the Earth, warmer. Now, if t

A study by BBC online reveals how enhanced greenhouse effect led toward global warming. According to the study - water vapor, carbon dioxide and methane form a natural blanket of air around the Earth. With natural greenhouse effect, about 70% of the sun's energy is radiated back into space and some of the infrared radiation is trapped by greenhouse gases, which warm the atmosphere, and reflect heat back down to the Earth. But, as greenhouse gases has increased, it trapping more heat than it naturally should leading toward global warming. To prove that global warming is a fact, the study indicates some clear evidence of increasing global temperature including long - term increase in global average temperature, the rising sea-water level, and melting of Arctic sea (BBC Online).

While Epstein and Gupta depicts the gloomy picture of the consequence of the global warming, they also prescribed how can we control enhanced greenhouse effect in "Controlling the greenhouse effect". Following are their five-point prescription. First, across the board equal percentage reductions, that means, imposing equal percentage reductions on all countries. Second, cuts proportional to historical emissions. Third, global per capita targets of emission. Fourth, a carbon tax. Fifth and most effective one, a market in carbon emission permits.

While the regional impacts of global warming are uncertain and difficult to predict, many of the anticipated changes are far-reaching and disturbing. Joshua M. Epstein and Raj Gupta, authors of Controlling the Greenhouse Effect, sketched the awful portrait of the effect of global warming. Rainfall and monsoon patterns could shift dramatically, upsetting agricultural activities worldwide. In summer, the Great Plains of the United States, central Europe, and parts of the Soviet Union could experience Dust Bowl conditions. Sea level could rise from one to fourteen feet, flooding coasts and allowing salt water to intrude into supplies. Ocean currents could shift, altering the climate of many areas and disrupting fisheries. The ranges of plant and animal species could change regionally, endangering protected areas and many

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Approximate Pages = 6 (250 words per page double spaced)