I'll be brief on this review.This book is for you, if you value understanding how Mars could possibly be "terraformed", and if you value detailed descriptions of this hypothetical process.There are two things this book is not:- It is not a fantasy book. Excepting the (imho) non-realistic "metanationals" concept, the book is a very down-to-earth (or to Mars) account of how the colonization of Mars could be- It is not an action book. In many instances I felt lost, not really knowing where the book was taking me. It does not have a lot of intrigue, suspense or action.I had read Red Mars many years ago and had forgotten its details. You might prefer to read the whole trilogy on one shot.