Science History – SofList https://www.soflist.com Thu, 05 Mar 2026 09:57:13 +0000 en-CA hourly 1 https://wordpress.org/?v=6.9.4 The Thin Clay Layer That Erased the Dinosaurs 🦕💥 https://www.soflist.com/2026/03/05/the-thin-clay-layer-that-erased-the-dinosaurs-%f0%9f%a6%95%f0%9f%92%a5/?utm_source=rss&utm_medium=rss&utm_campaign=the-thin-clay-layer-that-erased-the-dinosaurs-%25f0%259f%25a6%2595%25f0%259f%2592%25a5 https://www.soflist.com/2026/03/05/the-thin-clay-layer-that-erased-the-dinosaurs-%f0%9f%a6%95%f0%9f%92%a5/#comments Thu, 05 Mar 2026 09:57:13 +0000 https://www.soflist.com/2026/03/05/the-thin-clay-layer-that-erased-the-dinosaurs-%f0%9f%a6%95%f0%9f%92%a5/

For millions of years, the cause of the dinosaur extinction was a total mystery.

​In 1980, Luis Alvarez found a “glitch” in the Earth’s crust: a thin layer of gray clay filled with Iridium—an element rare on Earth but common in space. This 66-million-year-old “smoking gun” proved that a giant asteroid ended the age of giants in a single day.

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