And I've given four of them away to friends, who all liked it. You can get the story from other reviews.
While the Greens are the "enemy" in this story, it's really aimed at anyone who would rather follow an emotional cause than think for themselves. While the argument over global warming is far from settled (despite the popular press), the "dumbing-down" of our society is not in question. Science is a mystery to the vast majority of Americans, and nobody trusts anything mysterious for long....
This book is not about politics. It is about a small, intelligent, educated, and devoted group (of sci-fi fans)outsmarting a country of mindless followers (of environmental socialism). While the details are a departure, the basic theme is not new.
Frankly, my favorite parts of the book are the actions of the Greens, and how apparent they are in today's society: A Federal officer arguing how his gun is "appropriate technology"... the infighting on the committee in charge of finding the "Angels"... the focus on process over results throughout the pursuit.... I see this behavior more and more since first reading this book.
Final word: Don't let the word "politics" scare you from an enjoyable book. Read it and decide for yourself. If you're a sci-fi fan, you'll get the inside jokes and obscure references (some of which are explained). If not, there's plenty of material inside for you, too.