Tuesday, November 9, 2010

Causes of Global Warming: the Major Ones

The Earth has cycled through many phases of warming and cooling over the billions of years of its history due to the greenhouse effect. There are many natural factors that contribute to the greenhouse effect, but most of these occur very slowly over many millennia.

Temperature is increasing faster than ever on a global scale that cannot be explained by these natural processes. It is now clear that humans are responsible. But you can help change this. Find out how you can help.

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