07:41
Over the Edge: Exploring the Deep Ocean Floor
Scientists have made great progress in their efforts to map the deepest parts of the ocean. But even with all the new technology that's available, our knowledge and understanding of the deep ocean is far from complete. In fact, we know more about th...
01:42
Over the Edge: Oceanic Ridge System, The
Perhaps the most striking feature that characterizes the deep ocean floor is the vast oceanic ridge system that encircles the Earth along tectonic plate boundaries.
06:32
World in Motion: Plate Boundaries and Plate Movement
Whether studying earthquakes, volcanoes, or other geologic events, scientists usually focus their attention on plate boundaries and plate movement.