Despite all the deep-sea expeditions and samples taken from the seabed over the past 100 years, humans still know very little ...

Photo: Harry Hess argues that the continents had once been one, and have drifted apart. With the discovery of plate tectonics and the mapping of the earth into about 12 plates, plus the ...

The project's goal is to map all objects protruding 100 meters or more from the entire planet's ocean floor within the next ...

Harry Hess became a professor of geology ... His ship was equipped for sounding the ocean floor, which was useful for Hess both as ship's commander and as a geologist. In 1945, Hess measured ...