Oklo, a 2 billion years natural nuclear reactor

Hank Green speaks to us about the 2 billion years old natural reactor from Oklo, Gabon, Africa. It worked the same as our nowadays reactors. Researchers have found traces of radioactive neodymium and rutherium and it seems that it worked for quite some time.

In such a natural reactor the nuclear fuel would undergo the fission process and then give off heat and radioactivity. The cold water would then cool down the fuel and thus help the reaction go on a steady state for a lot of time. Otherwise it would have exploded in a big boom.

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