Sure, they *say* it's for peaceful uses only...

This is truly bizarre.

The Web site of Discover magazine has a short article about a naturally occuring nuclear reactor in Gabon. When water trickles through some uranium deposits, it speeds up a fission reaction that creates enough heat to boil the water. When the water is boiled off, the reaction stops. It even stores its own waste.

I'll be suspicious if Gabon suddenly says it found a "naturally occuring" nuclear bomb, though.