In The Eternal Frontier Tim Flannery leads the reader on a 65 million-year quest to understand North America. From the asteroid impact that wiped out the dinosaurs at the end of the Cretaceous Period to the ecological havoc now being wrought upon the continent by Homo sapiens, Flannery explores America's history with keen insight and an extraordinary breadth of knowledge that encompasses the fields of palaeontology, geology, geography, ecology, anthropology and history. Along the way we learn about the extreme climatic changes that have affected the land over the last 65 million years and the adaptive responses of America's vegetation and wildlife. Ultimately, human beings had to face the environmental vicissitudes of the continent, and Flannery's exploration of the ways in which we have coped makes for fascinating, if sometimes depressing, reading.
The deep history of America is particularly interesting from an ecological point of view because the region seems always to have acted as a haven for migrants--human or otherwise. As such many parallels can be drawn between the continent's distant past and its recent history of human occupation. Here Flannery is very good, sensibly exploring the links between ancient and modern America without ever overplaying his hand.