raising sea level by 216 feet. Explore what the world’s new coastlines would look like. 8 min read This story appears in the September 2013 issue of National Geographic magazine. The maps here ...

cartographic historian and author of Sea Monsters on Medieval and Renaissance Maps. Magnus’s map was one of the first geographic representations of Europe, and it came at a time when people ...

In recent decades, technology has begun to reveal some of the sea’s deepest ... are helping to map the ocean floor in detail for the first time. Photo by NATIONAL GEOGRAPHIC CREATIVEWORKS ...

In eastern Romania, before emptying into the Black Sea, it splits into a bewildering plexus of lagoons, swamps, lakes, floating islands, subtropical forests and endless corridors of reeds.