text (1441): A giant reservoir of water has been discovered 400 miles beneath Earth's surface.

It could harbor three times the volume of water found in every ocean on Earths surface combined.

Yet this is no familiar liquid. It doesnt course through hidden rivers or pool in vast underground chambers. Instead, its imprisoned inside ringwoodite, a mineral deep in the mantle that functions like a molecular sponge, clutching HO within its crystal lattice under crushing pressure and searing heat.

For decades, researchers speculated about such a subterranean reservoir, but this marks the most compelling proof to date. The revelation emerged from seismic waves: subtle variations in how earthquake vibrations propagate through Earths interior betrayed the signature of water-saturated rock.

The finding compels a radical overhaul of Earths hydrologic cycle. Conventionally, we viewed nearly all planetary water as confined to the surface and shallow crust. This concealed ocean, however, unveils a far-reaching, globe-spanning circuit that may shuttle water between oceans, mantle, and perhaps even greater depths across geologic timescales.

Lead geophysicist Steve Jacobsen suggests this buried trove could explain the origins of Earths abundant surface water. It may also govern volcanic eruptions and the restless drift of tectonic plates.

["Gigantic ocean of water found hidden beneath the Earths surface." Brighter Side of News, 30 April 2025]

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