by Shawn W. Sheehy
In "The Sixth Extinction," Richard Leakey describes five major catastrophes that led to significant extinctions; the last of which was the meteor impact that eliminated the dinosaurs. He theorizes that the sixth big extinction--authored by humans--is well under way.
If humans are successful in instigating a profound die-off, undoubtedly some creatures will survive and differentiate to fill the niches evacuated by extinguished species. This book features eight of these evolved creatures, featured in their post-apocalyptic environments and accompanied by text that describes each creature and its role in restoring a healthful environment.