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Place

Oklo

Oklo is a uranium-rich region in Gabon, West Africa, where scientists discovered the only known natural nuclear reactors on Earth. These reactors operated over 1.7 billion years ago when the concentration of fissile uranium-235 was high enough to sustain self-perpetuating fission reactions. The site provides critical insights into nuclear physics, geochemistry, and the long-term containment of radioactive materials.

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