Engineers have a plan to pump seawater under Venice in an attempt to raise the city by a foot. “The $117 million project entails digging 12 holes with a diameter of one foot within a six-mile area around the city, and pumping seawater into the ground at a depth of 2,298 feet. The seawater is expected to expand the sand that lies underneath, which combined with a topping of waterproof clay would eventually push up the soil.”