Neal Stephenson's sweeping, prescient new novel transports readers to a near-future world where the greenhouse effect has inexorably resulted in a whirling-dervish troposphere of superstorms, rising sea levels, global flooding, merciless heat waves, and virulent, deadly pandemics. One man has a Big Idea for reversing global warming, a master plan perhaps best described as "elemental." But will it work? And just as important, what are the consequences for the planet and all of humanity should it be applied? As only Stephenson can, it sounds a clarion alarm, ponders potential solutions and dire risks, and wraps it all together in an exhilarating, witty, mind-expanding speculative adventure.