Keeping Mars Warm with New Super Greenhouse Gases - A recent technical paper from the Feb. 27, 2001 issue of the Proceedings of the National Academy of Sciences. - http://www.pnas.org/cgi/content/full/98/5/2154
Biology and the Planetary Engineering of Mars - A paper by Julian A. Hiscox that clarifies the distinction between ecopoiesis and terraforming. - http://spot.colorado.edu/~marscase/cfm/articles/biorev3.html
The Drexlerian Terraformation of Mars - Subtitle: A New Ark for Humanity. A technical article on terraforming from the Newsletter of the Molecular Manufacturing Shortcut Group. - http://www.islandone.org/MMSG/9601-news.html#RTFToC53
How Terraforming Mars Will Work - An article from the "How Stuff Works" site with detailed information on terraforming Mars. - http://www.howstuffworks.com/terraforming.htm
Red Colony.com - The Future of Mars Today - Learn about Mars colonization and terraforming with the latest news, images, downloads, newsletter, and chat. - http://www.redcolony.com/
Astrobiology Web - Terraforming links and images. - http://www2.astrobiology.com/astro/terraforming.html