Mysteries of the DeepBy: James Lawrence Powell A groundbreaking chronicle of scientific ocean drillinga crowning achievement of the twentieth centuryand how it shaped our knowledge of Earth's past. Under the radaror, rather, sonarof most people and many scientists, for the last six decades ships have plied the worlds oceans, mining the seafloor for its secretsand quietly resolving confounding geological mysteries. Continental drift and plate tectonics. The origin of the