Mar 12, 2026
Earth Made Its Own Nuclear Reactor — 2 Billion Years Ago
The History Channel
The first sign of the extremely ancient reactors appeared in 1972, when a nuclear technician in France noticed very slight abnormalities in uranium ore from a mine near Oklo. “The technician was monitoring the radioactivity, and he saw this was different,” says North Carolina State University nuclear physicist Chris Gould, who made a detailed analysis.