unilad16h
Scientists discovered world's only naturally occurring nuclear reactor was active 1,700,000,000 years ago
Its discovery was shared over on Reddit, as one user posted: "TIL [Today I Learned] The only known naturally occuring nuclear ...
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Fossils suggest complex life on Earth 1.5bn years older than thought
But fossils discovered in Gabon, central Africa ... About 635 million years ago, geological upheaval released huge amounts of phosphorus, bringing oxygen to near-present levels and sparking ...