The major aim of the series is to make more people aware of the crisis of overpopulation which is directly responsible for such ecological excesses as: global warming, air and water pollution and waste disposal: ecological scarcities such as fresh water and food; and social problems like poverty and illegal immigration. The population problems, when combined with our higher levels of technology increase other problems such as: aging with its increasing expenses for health and retirement. Several solutions are also explored. The books revolve around the travels of Lemuel Gulliver XVI who in 2025 has just completed a 25 year voyage of the solar system searching for homes for the world's excess population. He found none. On his return he and three friends visit six countries to see how they have, or have not, dealt with the crisis. The odd numbered books are science fiction. The even numbered books are non-fiction--dealing with an issue that was elicited by the preceding book. For example, Book 2 deals with global warming, Book 4 covers how we develop our thinking about our values and morals, Book 6 looks at our psychological motivations. A more complete view of the series can be gained by reading the Editor's Synopsis at the web site.