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 ...

If your eyes crossed while reading that, here's what you need to know — SWOT's fancy tools map the sea floor by measuring the height of the ocean's surface. Believe it or not, the surface ...

We’ve only mapped about 25 percent of the sea floor ... and ice,” and the new maps “will help us to answer some fundamental questions in tectonics and deep ocean mixing.” ...