Far below the familiar blue of the oceans, scientists are uncovering evidence of a vast hidden reservoir of water locked inside the rocks of Earth’s mantle. Rather than a single underground sea, this ...

In the South China Sea, near the Paracel Islands, the aqua-colored waters of an expansive shallow reef platform suddenly gives way to a near vertical shaft of vast darkness – an ocean sinkhole almost ...

For years, scientists thought Saturn’s moon Titan hid a global ocean beneath its frozen surface. A new look at Cassini data now suggests something very different: a thick, slushy interior with pockets ...

Deep sea pressure reverse osmosis at 400 to 600 meters drives membrane filtration, cutting energy use more than 50 percent and giving coastal cities safer drinking water.