Mother Nature Created A Natural Nuclear Reactor on Earth 1.7 Billion Years Ago
When you think about nuclear fission reactor, you probably thought of man-made nuclear energy power plants (the [Springfield Nuclear Power Plant](http://simpsons.wikia.com/wiki/Springfield_Nuclear_Power_Plant) fr...
https://www.neatorama.com/2018/10/05/Mother-Nature-Created-A-Natural-Nuclear-Reactor-on-Earth-1-7-Billion-Years-Ago/