Scientists have discovered evidence of a vast underground water reservoir located about 400 miles beneath the planet’s surface, estimated to be three times the volume of all of Earth’s oceans combined. According to Nature World News, this astonishing discovery centers on a mineral deep within Earth called ringwoodite, which acts like a super-dense sponge. Under the intense heat and pressure in the mantle, water is trapped in a form that is neither liquid, solid, nor gas, but something in between. Researchers detected this reservoir by analyzing seismic waves from earthquakes. When those waves passed through zones rich in ringwoodite, they slowed down, indicating the presence of water. This hidden ocean challenges long-held theories about the origins of Earth and the water cycle. It suggests that Earth’s water may not have originated solely from surface interactions or sediments, but may have cycled through the planet’s interior for billions of years
