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Although the ground feels immovable, in reality, all life on Earth is on the outside of an 8,000-mile-diameter "spaceship" that is twirling on its axis and sweeping around the galaxy. This book explains how astronomers can tell that Earth is going through such gyrations and the dramatic effects those motions have on the planet.

Beginning on Easter Sunday, March 23, 1913, torrential rains across the Midwest dropped a record three months of rainfall in four days. Floodwaters funneled down Ohios Miami Valley into the heart of the vibrant industrial city of Dayton. Levees burst, houses were swept away, and downtown was gutted by fires blazing from broken gas mains. At the end of Easter week, nearly 100 Daytonians had perished, and tens of thousands more were left homeless and destitute--a tragedy that made banner headlines in newspapers nationwide. Out of Daytons ashes and mud rose fierce public resolve never again to...