ANCIENT ORIGINS
Earth Was Not Destroyed Only Once. Civilizations May Have Had to Start Again
About 66 million years ago, a large object struck the Chicxulub region in what is now Mexico. Geologists found an iridium-rich layer at the boundary where non-avian dinosaurs disappeared.
Đọc bằng tiếng Việt →About 66 million years ago, a large object struck the Chicxulub region in what is now Mexico. Geologists found an iridium-rich layer at the boundary where non-avian dinosaurs disappeared. Iridium is rare at Earth's surface but common in meteorites. The layer appears in many places. It is the trace of a global destruction left in stone.
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