The Fifth Sacred Thing - Starbird.

The book takes place about 60 years from now (fiction) and shows two worlds that are extreme possibilities of what are society and earth could become like. One shows what could happen if we get our act together soon, while the other is a depiction of what could happen if current trends continue, and people like us get stomped out of existance by Earth degradators who love power a lot more than are empowered by love.