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, its mantle held far less … Continue reading Earth may have been a “water world” three billion years ago, new research suggests
