These waters, which extend 12 nautical miles from the coast, contain 70 percent of all ocean biodiversity. According to the UN, nearly 2.4 billion people live within 100 kilometers of the coast.

Even from 1994 to 1998, there was a major observable shift in the inner and deep middle stations, which Sahade said was a surprise. “In only four years, the system changed drastically,” he ...

A liquid ocean sitting about 15 miles under the surface would also account for the planet's jiggle. It's an intriguing possibility (though there are other so-called ocean worlds, like the Saturn ...