When and where did life on Earth begin? Structures in a rock that is at least 3.75 billion years old offer clues – or, at least, they do in the eyes of some scientists.
Tiny structures found in a rock that is at least 3.75 billion years old may support the idea that microbial life on Earth originated around underwater hydrothermal vents – but the findings are controversial.
is widely debated. All we know is that it occurred sometime after Earth formed 4.5 billion years ago and before the earliest confirmed microbial fossils appeared around 3.4 billion years ago.Subscribe now for unlimited access
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