The astounding new novel from the master of science fiction.President Barack Obama's summer reading choice and recently optioned by Ron Howard and IMAGINE to be made into a major motion picture. What would happen if the world were ending?When a catastrophic event renders the earth a ticking time bomb, it triggers a feverish race against the inevitable. An ambitious plan is devised to ensure the survival of humanity far beyond our atmosphere. But unforeseen dangers threaten the intrepid pioneers, until only a handful of survivors remainGÇªFive thousand years later, their progeny GÇô seven distinct races now three billion strong GÇô embark on yet another audacious journey into the unknown, to an alien world utterly transformed by cataclysm and time: Earth.A writer of dazzling genius and imaginative vision, Neal Stephenson combines science, philosophy, technology, psychology, and literature in a magnificent work of speculative fiction that offers a portrait of a future that is at once extraordinary and eerily recognizable. He explores some of our biggest ideas and perplexing challenges in a breathtaking saga that is daring, engrossing, and altogether brilliant.