The surface of the ocean isn’t flat. And no, I don’t mean waves or the curve of the Earth. The surface of the ocean is ever so slightly the SHAPE OF WHAT’S BELOW IT. And that can tell us more about what’s really happening down in the deep. When you look at Google Maps of the ocean floor, some of that information comes from using radar satellites to measure these small changes in the ocean’s surface…

This short is part of Huge If True, our optimistic show about science and tech. We just made a longer episode all about mapping our oceans! Subscribe to support us and to see more.

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