('gī•ōm) n. an artificial world in space that would sustain itself using natural ecology.

Gaiome: Notes on Ecology, Space Travel and Becoming Cosmic Species is the first serious book on space habitation in three decades, challenging over a century of prevailing thought on the subject. It won the Bronze Medal (Science Category) in the 2008 Independent Publisher Book Awards, placing among titles by Harvard and Yale University Press.

Unlike the space colonies of science fiction, gaiomes do not promise a way out of our global crises. Only a sustainable civilization would have the competence build them, and then of course it would not need to. Not all that life does is driven by need, however, so Gaiome explores not just what we must do to make space accessible to large populations, but what we must become.

If you read just one book on space travel this decade, make it Gaiome. Available now at

“Gaiome rocks! It deserves the widest possible audience. GREAT and RARE combination of exciting but reliable high tech space stuff with essential survival information for the immediate futures on Earth.”
—Jim Dator, Director of the Hawaii Research Center for Futures Studies, Professor, Department of Political Science, University of Hawaii at Manoa and Co-Chair, Space and Society Division, International Space University.

“A tremendous achievement. You have carved out a new universe of discourse to match your new word. Very rare and wonderful.”
—Ann Kreilkamp, Ph.D., publisher of Crone Magazine.

“Mix environmentalist and permaculture enthusiasm with space colony enthusiasm, and you get Polk's very well researched program. This is the high frontier of high-tech Green.”
—Stewart Brand, Creator of The Whole Earth Catalog and editor, Space Colonies (Whole Earth Catalog: 1977).

Gaiome: Notes on Ecology, Space Travel and Becoming Cosmic Species. Nonfiction. 296 pages with 13 tables and 19 illustrations. Get it now at