They called the river the Red Bull. Desert silt gave the Colorado its distinctive color, but it was its power and unpredictability that made its fierce reputation. Speeding down from the high Rockies, the Colorado would flood without warning, wiping out any farmer foolish enough to settle near its banks. But what if the Red Bull could be tamed? Farmlands irrigated by the Colorado's waters could bloom in the desert. Cities electrified by...