The Oklo natural nuclear reactor
Saturday January 15, 2005
It's an amazing story: back in the Proterozoic, where the African nation of Gabon is today, a natural body of uranium ore reached critical mass and, for the next million years, pulsed like a geyser eight times a day producing 100 kilowatts of heat. How and why it happened sheds light on even earlier doings--like the birth of the solar system. Read more...


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