The greenhouse effect is an increase in the atmospheric temperature caused
            
 by increasing amounts of greenhouse gases. These gases act as a heat blanket
            
 insulating the Earth's surface absorbing and trapping heat radiation which normally
            
 escapes from the earth. They include carbon dioxide, water vapor, methane,
            
 nitrous oxide, CFC's, and other halocarbons.
            
 	The earth's atmosphere goes through two processes constantly. Global cooling
            
 is the  first process. This process uses the clouds which cover 60% of the earth's
            
 surface to reflect 30% of the solar radiation. It also uses a sulfate haze, which
            
 is formed by sulfur dioxide from industrial sources that enter the atmosphere and
            
 react with compounds to form a high-level aerosol. These cool the atmosphere by
            
 blocking us from direct contact with the sun. The reflection of the sunlight is
            
 referred to as planetary albedo and contributes to the overall cooling.
            
 	The second is the warming process. This is when light energy comes through
            
 the atmosphere and is absorbed by Earth and transformed to heat energy at the
            
 planet's surface. The infrared heat energy then radiates upward into space. There
            
 the greenhouse gases found naturally in the troposphere absorb some of the infrared
            
 radiation. The gases insulate the Earth, but do eventually allow the heat to
            
 escape. Without these greenhouse gases the earth would be would 33 C colder.
            
 	Global temperature is a balance of the effects of the factors leading to
            
 global cooling, and warming. Unfortunately, increased emissions of greenhouse
            
 gases increase the warming process. For example, every kilogram of fossil fuels
            
 burned equals 3 kilograms of carbon dioxide ( the mass triples because each carbon
            
 atom in fuel bond to two oxygen atoms, in the course of burning, and forms C02. )
            
 6 billion tons of fossil fuel carbon are burned each year adding 18 billion tons
            
 of C02 to the atmosphere. This has increase th
            
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