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· don't cut
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4,838 Posts
Sorry Pete, you are still not telling the truth. Go to the source instead of your stupid editorials.

http://www.nasa.gov/worldbook/global_warming_worldbook.html

Causes of global warming
Climatologists (scientists who study climate) have analyzed the global warming that has occurred since the late 1800's. A majority of climatologists have concluded that human activities are responsible for most of the warming. Human activities contribute to global warming by enhancing Earth's natural greenhouse effect. The greenhouse effect warms Earth's surface through a complex process involving sunlight, gases, and particles in the atmosphere. Gases that trap heat in the atmosphere are known as greenhouse gases.
 
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