Ancient Earth, ancient skies: the age of Earth and its cosmic surroundings. Stanford University Press. Faure, Gunter & Mensing, Teresa M. (2007). Introduction to planetary science: the geological perspective. Springer. . Fogg, Martyn J. (2000). The Ethical Dimensions of Space Settlement (PDF format). Space Policy, 16, 205–211. Also presented (1999) at the 50th International Astronautical Congress, Amsterdam (IAA-99-IAA.7.1.07). Forget, François; Costard, François & Lognonné, Philippe (2007). Planet Mars: Story of Another World. Springer. . Kargel, Jeffrey Stuart (2004). Mars: a warmer, wetter planet. Springer. . McKay Christopher P. & Haynes, Robert H. (1997). "Implanting Life on Mars as a Long Term Goal for Mars Exploration", in The Case for Mars IV: Considerations for Sending Humans, ed. Thomas R. Meyer (San Diego, California: American Astronautical Society/Univelt), Pp. 209–15. Read, Peter L.; Lewis, Stephen R. (2004). The Martian climate revisited: atmosphere and environment of a desert planet. Springer. . Sagan, Carl & Druyan, Ann (1997). Pale Blue Dot: A Vision of the Human Future in Space. Ballantine Books. . Schubert, Gerald; Turcotte, Donald L.; Olson, Peter. (2001). Mantle convection in the Earth and planets. Cambridge University Press. . Taylor, Richard L. S. (1992). "Paraterraforming – The world house concept". Journal of the British Interplanetary Society, vol. 45, no. 8, pp. 341–352. . . Thompson, J. M. T. (2001). Visions of the future: astronomy and Earth science. Cambridge University Press. . External links New Mars forum Terraformers Society of Canada Visualizing the steps of solar system terraforming Research Paper: Technological Requirements for Terraforming Mars Terraformers Australia Terraformers UK The Terraformation of Worlds Terraformation de Mars Fogg, Martyn J. The Terraforming Information Pages BBC article on Charles Darwin's and Joseph Hooker's artificial ecosystem on Ascension Island that may be of interest to terraforming projects Robotic Lunar Ecopoiesis Test Bed Principal Investigator: Paul Todd (2004) Ecosystems Open problems Planetary engineering Science fiction themes Space colonization