Water below Earth’s surface: Ringwoodite rock may hide reservoir three times bigger than the oceans.

Earth May Have a Vast Underground “Ocean” (Video)

Earth May Have a Vast Underground “Ocean” (Video)

Slate in motion.
June 16 2014 3:09 PM

The Water Down Below

A reservoir deep beneath the Earth’s surface may contain three times the water of our oceans combined.

still 1

Published in the journal Science, a new study supports the belief that our oceans slowly filled with water from inside the planet rather than arriving on icy comets.