More sites on greenhouse gases The Intergovernmental Panel on Climate Change issued a 2000 report on greenhouse gas emissions. The report can be accessed here: http://www.ipcc.ch/pdf/special-reports/emissions_scenarios.pdf.
This Web page from the American Chemical Society provides a detailed explanation with diagrams of the molecular makeup of greenhouse gases. (http://www.acs.org/content/acs/en/climatescience/greenhousegases/properties.html)
This long chapter from a textbook at the University of Chicago offers another explanation of the causes and effects of greenhouse gas behavior. This is an excellent resource. (http://forecast.uchicago.edu/chapter4.pdf)
The U.S. Environmental Protection Agency predictably has a site with information about climate change and greenhouse gases: http://epa.gov/climatechange/ghgemissions/.
From the American Chemical Society comes this very nice Web site on greenhouse gases, including a little history: http://www.acs.org/content/acs/en/climatescience/greenhousegases.html.
Elmhurst University published this Web page about greenhouse gases: http://www.elmhurst.edu/~chm/vchembook/globalwarmA5.html.
This document from the World Meteorological Organization has brief profiles of each of the major greenhouse gases: http://www.wmo.int/pages/prog/arep/gaw/ghg/documents/GHGbulletin_7_en.pdf.
This article summarizes the need to reduce CO2 levels and the evidence for global warming: http://www.csmonitor.com/USA/2009/1125/p02s01-usgn.html.