"Vast Subterranean Ocean Holds More Water Than Earth's Surface"

Scientists have discovered a massive ocean hidden beneath the Earth's crust, stored in rock known as 'ringwoodite'. The rock acts like a sponge, soaking up water, and can contain a lot of water under conditions of the deep mantle. If the rock contained just 1% water, it would mean that there is three times more water under the surface of the Earth than there is in the oceans on the surface. This discovery may help explain the vast amount of liquid water on the surface of our habitable planet.