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Uploaded on Nov 1, 2009
http://www.lesjohnsonauthor.com/parad... Lead author Les Johnson describes the rationale behind his popular science book, Paradise Regained: The Regreening of Earth (coauthored with Gregory Matloff and C Bangs). The book describes how the use of space resources and technologies can help solve down-to-Earth environmental and energy problems in the relatively near future.