Mammologist and paleontologist Flannery (The Eternal Frontier), who in recent years has become well known for his controversial ideas on conservation, the environment and population control, presents a straightforward and powerfully written look at the connection between climate change and global warming. It's destined to become required reading following Hurricane Katrina as the focus shifts to the natural forces that may have produced such a devastating event. Much of the book's success is rooted in Flannery's succinct and fascinating insights into related topics, such as the differences between the terms greenhouse effect, global warming and climate change, and how the El Nino cycle of extreme climatic events had a profound re-organising effect on nature. But the heart of the book is Flannery's impassioned look at the earth's colossal carbon dioxide pollution problem and his argument for how we can shift from our current global reliance on fossil fuels to a hydrogen-based economy. Flannery consistently produces the hard goods related to his main message that our environmental behavior makes us all weather makers who already possess all the tools required to avoid catastrophic climate change.