# Something Fundamental Changed on Earth 2.5 Billion Years Ago. Scientists Think They've Found What

> **Open Intelligence Dossier** · First detected: 2026-11-15 18:40 UTC · Category: Science

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*Canonical Source: https://pulse.byoaiapps.com/trend/2026-11-15/something-fundamental-changed-on-earth-2-5-billion-years-ago-scientists-think*