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Global Warming Facts and Our Future
explores the latest scientific information from the National Academy of Sciences. Is our climate warming? Are humans causing it? What might be the effects? What can be done? Learn about the greenhouse effect, the carbon cycle, past changes in our climate, and predicted changes and how they could affect sea levels, agriculture, and ecosystems. See options for reducing CO2 emissions. (National Academy of Sciences)
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Interesting Fact:
The sun is the source of energy for the earth's climate system. Although the sun's energy output appears constant from an everyday point of view, small changes over an extended period of time can lead to climate changes. Some scientists suspect that a portion of the warming in the first half of the 20th century was due to an increase in the output of solar energy. |
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A century of change |
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What's New 
