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3 billion-year-old Earth had water everywhere, but not one continent, study suggests @ 2020-03-03T08: Back Hot News Keyword：years ago Early Earth may have been a Concept： Chemicals in ancient ocean rocks hint that 3.2 billion years ago, the surface of a baby Earth was continent-free and covered by a global ocean. When it was very young, the planet Earth looked rather different from the one we know and love today. For one, it had supercontinents - when the landmasses ... New research shows that the early Earth, home to some of our planet"s first lifeforms, may have been a real-life 「waterworld」– without a continent in sight. Chemical signatures in ancient ocean crust point to a planet without continents. Perhaps Kevin Costner"s famously bloated 1995 film "Waterworld" deserves more credit. Early Earth of 3.2 billion years ago, home to some of our planet"s first lifeforms, may have been a real-life. Chemical changes in the oceans more than 800 million years ago almost destroyed the oxygen-rich atmosphere that paved the way for complex life on Earth, ... Evolution of life on Earth was nearly nipped in the bud one billion years ago as key chemical reactions in the world"s oceans starved the planet of oxygen. About 3.2 billion years ago, planet Earth may have lacked continents, being covered in water. Kevin Costner, eat your heart out. New research shows that the early Earth, home to some of our planet"s first lifeforms, may have been a real-life "waterworld" ...