Guest guest Posted May 18, 2008 Report Share Posted May 18, 2008 Global Warming Earth Summit Fact Sheet The Greenhouse Effect and Global Warming The greenhouse effect is a natural process that keeps the planet warm enough to sustain life. When sunlight enters the earth's atmosphere, some of it turns into heat energy. This heat is then absorbed by the surrounding air, water and land which in turn makes the surface of the planet warm. As the earth gets warmer, it radiates some of the heat back into space. But as this heat tries to escape the atmosphere, some of it is absorbed by greenhouse gases -- CO2, methane and water vapor. Instead of escaping the atmosphere, the heat is reradiated back to earth, warming the earth's surface. The Global Warming Theory maintains that human greenhouse gas emissions are so large that they are accelerating the natural greenhouse effect, causing heat to be trapped in our atmosphere and warming the planet beyond acceptable levels. The scientific community is still divided on whether or not this process is underway. Please visit link -> http://www.nationalcenter.org/KyotoFactSheet.html Quote Link to comment Share on other sites More sharing options...
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