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There is a close correlation between the average temperature of the Earth's atmosphere and the amount of [[carbon dioxide]] in the atmosphere. During warm periods, the carbon dioxide level increases, and during cool periods it decreases. Today the carbon dioxid concentration is 380 ppm. The pre-industrial level was 280 ppm.
There is a close correlation between the average temperature of the Earth's atmosphere and the amount of [[carbon dioxide]] in the atmosphere. During warm periods, the carbon dioxide level increases, and during cool periods it decreases. Today the carbon dioxid concentration is 380 ppm. The pre-industrial level was 280 ppm.
==Politics of global warming==
==Politics of global warming==
*[http://www.ipcc.ch Intergovernmental Panel on Climate Change (IPCC)]
*[http://www.ipcc.ch Intergovernmental Panel on Climate Change (IPCC)]
*[http://www.aip.org/history/climate/ The Discovery of Global Warming]
*[http://www.aip.org/history/climate/ The Discovery of Global Warming]
[[category:earth science]]
[[category:earth science]]