Barriers to Terraforming
Technological Barriers Technology...http://www.cnn.com/2006/TECH/space/02/06/nasa.budget/index.htmlhttp://www.cnn.com/2004/TECH/space/01/14/bush.space/http://en.wikipedia.org/wiki/Terraforminghttp://www.users.globalnet.co.uk/~mfogg/zubrin.htmhttp://www.spaceref.com/news/viewnews.html?id=301http://www.3d-designer.com/en/galery/galery.htm