Gigantic “hidden ocean” discovered 700 kilometers beneath Earth’s surface

Scientists have discovered a gigantic 'hidden ocean' approximately 700 kilometers beneath Earth's surface, locked within the deep mantle rock. This reservoir, held in a blue mineral called ringwoodite, contains roughly three times the amount of water as all the surface oceans combined. This discovery suggests that Earth's water may have originated from within the planet, offering insights into the stability of our planet's water cycle and the sustainability of its biosphere.