What would ocean basins look like, if we drained away all of the water? Like a big bathtub, with a wide, flat bottom in the middle? Or like a round bowl, with the deepest spot at the very middle?

The Pacific Ocean is home to some of the deepest points on the planet. In fact, four of the top six deepest spots in the world can be found in the Pacific. The Pacific’s basin is uniquely low, which ...

I spent years preparing to dive into the deepest place on Earth. Only a handful of people have traveled into the depths of the Mariana Trench, nearly 7 miles below the ocean surface. As a geologist ...