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The magnet arm of a SHRIMP ion microprobe caught mid-swing over its sample chamber, the collector housing beyond it catching a faint glow at the point where one isotope beam is being separated from its neighbors

Radioactive Clocks: How Nuclear Physics Gave Evolution Its Time

A statistical law inside the nucleus became a measuring instrument precise enough to hand evolutionary biology the billions of years its argument had always required but never had proof of.

By Brecht Corbeel · August 31, 2026 · 21 min read

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