Earth may have been a “water world” three billion years ago, new research suggests

(Natural News) Earlier studies have suggested that the Earth was once engulfed by water and had few or no landmasses at all some three billion years ago. A recent analysis of the Earth’s mantle provides evidence in support of that idea. Published in the journal AGU Advances, it suggested that back when the planet was a molten ball of magma,…  » READ MORE