Guest: Les Johnson. Topics: Environmentalists and space advocates, using space to improve condition on Earth now. Les Johnson returned to The Space Show to discuss his new book, "Paradise Regained: The Regreening of Earth." This book is available at the One Giant Leap Foundation book website, http://www.amazon.com/dp/0387799850?tag=onegialeafou-20. Remember, if you buy it through OGLF, Amazon makes a contribution to The Space Show.