News Headline
3 billion-year-old Earth had water everywhere, but not one continent, study suggests
Source
Space.com
Publication Date
2020-03-03
What did Earth look like 3.2 billion years ago? New evidence suggests the planet was covered by a vast ocean and had no continents at all. Continents appeared later, as plate tectonics thrust enormous, rocky land masses upward to breach the sea surfaces, scientists recently reported.