Every map of the world that you have ever seen is inaccurate. Well, of course, you might think. How could they map out the world when it’s round, not flat? True. But that isn’t the point.

Flat, two-dimensional maps can look different because the world is actually curved. This means map-makers need to make compromises when drawing maps. These different map representations are called ...

A newly-deployed satellite has created the most-detailed map yet of the ocean floor, finding hundreds of hills and underwater volcanoes that were previously missed.

And if you want to understand precisely how sea-levels will rise in different parts of the world, good ocean-floor maps are a must. Much of the data that's been imported into the GEBCO grid ...