Our Final Hour: A Scientist's Warning

Just when you've stopped worrying and learned to love the bomb, along comes Sir Martin Rees, Britain's Astronomer Royal, with teeming armies of deadly viruses, nanobots, and armed fanatics. Beyond the hazards most of us know about--smallpox, terrorists, global warming--Rees introduces the new threats of the 21st century and the unholy political and scientific alliances that have made them possible. Our Final Hour spells out doomsday scenarios for cosmic collisions, high-energy experiments gone wrong, and self-replicating machines that steadily devour the biosphere. If we can avoid driving ourselves to extinction, he writes, a glorious future awaits; if not, our devices may very well destroy the universe.

What happens here on Earth, in this century, could conceivably make the difference between a near eternity filled with ever more complex and subtle forms of life and one filled with nothing but base matter.

For many technological debacles, Rees places much of the blame squarely on the shoulders of the scientists who participate in perfecting environmental destruction, biological menaces, and ever-more powerful weapons. So is there any hope for humanity? Rees is vaguely optimistic on this point, offering solutions that would require a level of worldwide cooperation humans have yet to exhibit. If the daily news isn't enough to make you want to crawl under a rock, this book will do the trick. --Therese Littleton