The maps here show the world as it is now, with only one difference: All the ice on land has melted and drained into the sea, raising it 216 feet and creating new shorelines for our continents and ...

Changes in the sea surface height therefore point ... The data helped the team further refine maps of tectonic boundaries and ocean currents near coastal areas. "We're very interested in ...

Teachers can use the film to introduce how the landmass of Earth is grouped into seven continents and the main areas of sea into five oceans ... could use a base map to explore the make up ...

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 ...